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description Publicationkeyboard_double_arrow_right Article , Preprint , Journal 2020Embargo end date: 01 Jan 2019 China (People's Republic of), United Kingdom, France, China (People's Republic of), China (People's Republic of)Publisher:Elsevier BV Funded by:UKRI | EPSRC Centre for Doctoral..., UKRI | Equipment Account: Integr..., UKRI | ECCS - EPSRC Development ... +6 projectsUKRI| EPSRC Centre for Doctoral Training in Graphene Technology ,UKRI| Equipment Account: Integrated Thin Film Deposition and Analysis System ,UKRI| ECCS - EPSRC Development of uniform, low power, high density resistive memory by vertical interface and defect design ,UKRI| Control of spin and coherence in electronic excitations in organic and hybrid organic/inorganic semiconductor structures ,UKRI| DTP 2016-2017 University of Cambridge ,UKRI| Precision Manufacturing of Flexible CMOS ,ANR| InHyMat-PV ,EC| Robust OTFT sensors ,UKRI| Centre for Advanced Materials for Integrated Energy Systems (CAM-IES)Philip Schulz; Judith L. MacManus-Driscoll; Wen Li; Wen Li; Mark Nikolka; Henry J. Snaith; Solène Béchu; Weiwei Li; Robert A. Jagt; Robert L. Z. Hoye; Robert L. Z. Hoye; Yen-Hung Lin; Mathieu Frégnaux; Zewei Li; R. D. Raninga; Tahmida N. Huq; Muriel Bouttemy; Mengyao Sun;handle: 10044/1/80123
Thin (approximately 10 nm) oxide buffer layers grown over lead-halide perovskite device stacks are critical for protecting the perovskite against mechanical and environmental damage. However, the limited perovskite stability restricts the processing methods and temperatures (<=110 C) that can be used to deposit the oxide overlayers, with the latter limiting the electronic properties of the oxides achievable. In this work, we demonstrate an alternative to existing methods that can grow pinhole-free TiOx (x = 2.00+/-0.05) films with the requisite thickness in <1 min without vacuum. This technique is atmospheric pressure chemical vapor deposition (AP-CVD). The rapid but soft deposition enables growth temperatures of >=180 ��C to be used to coat the perovskite. This is >=70 ��C higher than achievable by current methods and results in more conductive TiOx films, boosting solar cell efficiencies by >2%. Likewise, when AP-CVD SnOx (x ~ 2) is grown on perovskites, there is also minimal damage to the perovskite beneath. The SnOx layer is pinhole-free and conformal, which reduces shunting in devices, and increases steady-state efficiencies from 16.5% (no SnOx) to 19.4% (60 nm SnOx), with fill factors reaching 84%. This work shows AP-CVD to be a versatile technique for growing oxides on thermally-sensitive materials. R.D.R and R.A.J contributed equally. 23 pages. 6 figures
Hyper Article en Lig... arrow_drop_down Imperial College London: SpiralArticle . 2020License: CC BY NC NDFull-Text: http://hdl.handle.net/10044/1/80123Data sources: Bielefeld Academic Search Engine (BASE)Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQArticle . 2020Full-Text: https://hal.science/hal-03032363Data sources: Bielefeld Academic Search Engine (BASE)Spiral - Imperial College Digital RepositoryArticle . 2020Data sources: Spiral - Imperial College Digital Repositoryhttps://dx.doi.org/10.48550/ar...Article . 2019License: arXiv Non-Exclusive DistributionData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.nanoen.2020.104946&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen bronze 25 citations 25 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
more_vert Hyper Article en Lig... arrow_drop_down Imperial College London: SpiralArticle . 2020License: CC BY NC NDFull-Text: http://hdl.handle.net/10044/1/80123Data sources: Bielefeld Academic Search Engine (BASE)Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQArticle . 2020Full-Text: https://hal.science/hal-03032363Data sources: Bielefeld Academic Search Engine (BASE)Spiral - Imperial College Digital RepositoryArticle . 2020Data sources: Spiral - Imperial College Digital Repositoryhttps://dx.doi.org/10.48550/ar...Article . 2019License: arXiv Non-Exclusive DistributionData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.nanoen.2020.104946&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Preprint , Journal 2020Embargo end date: 01 Jan 2019 China (People's Republic of), United Kingdom, France, China (People's Republic of), China (People's Republic of)Publisher:Elsevier BV Funded by:UKRI | EPSRC Centre for Doctoral..., UKRI | Equipment Account: Integr..., UKRI | ECCS - EPSRC Development ... +6 projectsUKRI| EPSRC Centre for Doctoral Training in Graphene Technology ,UKRI| Equipment Account: Integrated Thin Film Deposition and Analysis System ,UKRI| ECCS - EPSRC Development of uniform, low power, high density resistive memory by vertical interface and defect design ,UKRI| Control of spin and coherence in electronic excitations in organic and hybrid organic/inorganic semiconductor structures ,UKRI| DTP 2016-2017 University of Cambridge ,UKRI| Precision Manufacturing of Flexible CMOS ,ANR| InHyMat-PV ,EC| Robust OTFT sensors ,UKRI| Centre for Advanced Materials for Integrated Energy Systems (CAM-IES)Philip Schulz; Judith L. MacManus-Driscoll; Wen Li; Wen Li; Mark Nikolka; Henry J. Snaith; Solène Béchu; Weiwei Li; Robert A. Jagt; Robert L. Z. Hoye; Robert L. Z. Hoye; Yen-Hung Lin; Mathieu Frégnaux; Zewei Li; R. D. Raninga; Tahmida N. Huq; Muriel Bouttemy; Mengyao Sun;handle: 10044/1/80123
Thin (approximately 10 nm) oxide buffer layers grown over lead-halide perovskite device stacks are critical for protecting the perovskite against mechanical and environmental damage. However, the limited perovskite stability restricts the processing methods and temperatures (<=110 C) that can be used to deposit the oxide overlayers, with the latter limiting the electronic properties of the oxides achievable. In this work, we demonstrate an alternative to existing methods that can grow pinhole-free TiOx (x = 2.00+/-0.05) films with the requisite thickness in <1 min without vacuum. This technique is atmospheric pressure chemical vapor deposition (AP-CVD). The rapid but soft deposition enables growth temperatures of >=180 ��C to be used to coat the perovskite. This is >=70 ��C higher than achievable by current methods and results in more conductive TiOx films, boosting solar cell efficiencies by >2%. Likewise, when AP-CVD SnOx (x ~ 2) is grown on perovskites, there is also minimal damage to the perovskite beneath. The SnOx layer is pinhole-free and conformal, which reduces shunting in devices, and increases steady-state efficiencies from 16.5% (no SnOx) to 19.4% (60 nm SnOx), with fill factors reaching 84%. This work shows AP-CVD to be a versatile technique for growing oxides on thermally-sensitive materials. R.D.R and R.A.J contributed equally. 23 pages. 6 figures
Hyper Article en Lig... arrow_drop_down Imperial College London: SpiralArticle . 2020License: CC BY NC NDFull-Text: http://hdl.handle.net/10044/1/80123Data sources: Bielefeld Academic Search Engine (BASE)Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQArticle . 2020Full-Text: https://hal.science/hal-03032363Data sources: Bielefeld Academic Search Engine (BASE)Spiral - Imperial College Digital RepositoryArticle . 2020Data sources: Spiral - Imperial College Digital Repositoryhttps://dx.doi.org/10.48550/ar...Article . 2019License: arXiv Non-Exclusive DistributionData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.nanoen.2020.104946&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen bronze 25 citations 25 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
more_vert Hyper Article en Lig... arrow_drop_down Imperial College London: SpiralArticle . 2020License: CC BY NC NDFull-Text: http://hdl.handle.net/10044/1/80123Data sources: Bielefeld Academic Search Engine (BASE)Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQArticle . 2020Full-Text: https://hal.science/hal-03032363Data sources: Bielefeld Academic Search Engine (BASE)Spiral - Imperial College Digital RepositoryArticle . 2020Data sources: Spiral - Imperial College Digital Repositoryhttps://dx.doi.org/10.48550/ar...Article . 2019License: arXiv Non-Exclusive DistributionData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.nanoen.2020.104946&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2017Embargo end date: 23 Aug 2017 United Kingdom, United StatesPublisher:Wiley Authors: Tonio Buonassisi; Judith L. MacManus-Driscoll; Rachel C. Kurchin; Melany Sponseller; +14 AuthorsTonio Buonassisi; Judith L. MacManus-Driscoll; Rachel C. Kurchin; Melany Sponseller; Lana C. Lee; Joel Jean; Robert L. Z. Hoye; Robert L. Z. Hoye; Moungi G. Bawendi; Kelvin H. L. Zhang; Lea Nienhaus; Ahmed Kursumovic; James Alexander Polizzotti; Vladimir Bulovic; Vladan Stevanović; Vladan Stevanović; Riley E. Brandt; Tahmida N. Huq;pmid: 28715091
handle: 1721.1/113014 , 10044/1/75943
Bismuth‐based compounds have recently gained increasing attention as potentially nontoxic and defect‐tolerant solar absorbers. However, many of the new materials recently investigated show limited photovoltaic performance. Herein, one such compound is explored in detail through theory and experiment: bismuth oxyiodide (BiOI). BiOI thin films are grown by chemical vapor transport and found to maintain the same tetragonal phase in ambient air for at least 197 d. The computations suggest BiOI to be tolerant to antisite and vacancy defects. All‐inorganic solar cells (ITO|NiOx|BiOI|ZnO|Al) with negligible hysteresis and up to 80% external quantum efficiency under select monochromatic excitation are demonstrated. The short‐circuit current densities and power conversion efficiencies under AM 1.5G illumination are nearly double those of previously reported BiOI solar cells, as well as other bismuth halide and chalcohalide photovoltaics recently explored by many groups. Through a detailed loss analysis using optical characterization, photoemission spectroscopy, and device modeling, direction for future improvements in efficiency is provided. This work demonstrates that BiOI, previously considered to be a poor photocatalyst, is promising for photovoltaics.
DSpace@MIT (Massachu... arrow_drop_down DSpace@MIT (Massachusetts Institute of Technology)Article . 2018License: CC BYFull-Text: http://dx.doi.org/10.1002/ADMA.201702176Data sources: Bielefeld Academic Search Engine (BASE)Imperial College London: SpiralArticle . 2017License: CC BYFull-Text: http://hdl.handle.net/10044/1/75943Data sources: Bielefeld Academic Search Engine (BASE)Spiral - Imperial College Digital RepositoryArticle . 2017Data sources: Spiral - Imperial College Digital Repositoryadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1002/adma.201702176&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen hybrid 165 citations 165 popularity Top 1% influence Top 10% impulse Top 1% Powered by BIP!
more_vert DSpace@MIT (Massachu... arrow_drop_down DSpace@MIT (Massachusetts Institute of Technology)Article . 2018License: CC BYFull-Text: http://dx.doi.org/10.1002/ADMA.201702176Data sources: Bielefeld Academic Search Engine (BASE)Imperial College London: SpiralArticle . 2017License: CC BYFull-Text: http://hdl.handle.net/10044/1/75943Data sources: Bielefeld Academic Search Engine (BASE)Spiral - Imperial College Digital RepositoryArticle . 2017Data sources: Spiral - Imperial College Digital Repositoryadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1002/adma.201702176&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2017Embargo end date: 23 Aug 2017 United Kingdom, United StatesPublisher:Wiley Authors: Tonio Buonassisi; Judith L. MacManus-Driscoll; Rachel C. Kurchin; Melany Sponseller; +14 AuthorsTonio Buonassisi; Judith L. MacManus-Driscoll; Rachel C. Kurchin; Melany Sponseller; Lana C. Lee; Joel Jean; Robert L. Z. Hoye; Robert L. Z. Hoye; Moungi G. Bawendi; Kelvin H. L. Zhang; Lea Nienhaus; Ahmed Kursumovic; James Alexander Polizzotti; Vladimir Bulovic; Vladan Stevanović; Vladan Stevanović; Riley E. Brandt; Tahmida N. Huq;pmid: 28715091
handle: 1721.1/113014 , 10044/1/75943
Bismuth‐based compounds have recently gained increasing attention as potentially nontoxic and defect‐tolerant solar absorbers. However, many of the new materials recently investigated show limited photovoltaic performance. Herein, one such compound is explored in detail through theory and experiment: bismuth oxyiodide (BiOI). BiOI thin films are grown by chemical vapor transport and found to maintain the same tetragonal phase in ambient air for at least 197 d. The computations suggest BiOI to be tolerant to antisite and vacancy defects. All‐inorganic solar cells (ITO|NiOx|BiOI|ZnO|Al) with negligible hysteresis and up to 80% external quantum efficiency under select monochromatic excitation are demonstrated. The short‐circuit current densities and power conversion efficiencies under AM 1.5G illumination are nearly double those of previously reported BiOI solar cells, as well as other bismuth halide and chalcohalide photovoltaics recently explored by many groups. Through a detailed loss analysis using optical characterization, photoemission spectroscopy, and device modeling, direction for future improvements in efficiency is provided. This work demonstrates that BiOI, previously considered to be a poor photocatalyst, is promising for photovoltaics.
DSpace@MIT (Massachu... arrow_drop_down DSpace@MIT (Massachusetts Institute of Technology)Article . 2018License: CC BYFull-Text: http://dx.doi.org/10.1002/ADMA.201702176Data sources: Bielefeld Academic Search Engine (BASE)Imperial College London: SpiralArticle . 2017License: CC BYFull-Text: http://hdl.handle.net/10044/1/75943Data sources: Bielefeld Academic Search Engine (BASE)Spiral - Imperial College Digital RepositoryArticle . 2017Data sources: Spiral - Imperial College Digital Repositoryadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1002/adma.201702176&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen hybrid 165 citations 165 popularity Top 1% influence Top 10% impulse Top 1% Powered by BIP!
more_vert DSpace@MIT (Massachu... arrow_drop_down DSpace@MIT (Massachusetts Institute of Technology)Article . 2018License: CC BYFull-Text: http://dx.doi.org/10.1002/ADMA.201702176Data sources: Bielefeld Academic Search Engine (BASE)Imperial College London: SpiralArticle . 2017License: CC BYFull-Text: http://hdl.handle.net/10044/1/75943Data sources: Bielefeld Academic Search Engine (BASE)Spiral - Imperial College Digital RepositoryArticle . 2017Data sources: Spiral - Imperial College Digital Repositoryadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1002/adma.201702176&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2020Embargo end date: 21 Jan 2020 United KingdomPublisher:Wiley Funded by:DFG, UKRI | Equipment Account: Integr..., UKRI | Precision Manufacturing o...DFG ,UKRI| Equipment Account: Integrated Thin Film Deposition and Analysis System ,UKRI| Precision Manufacturing of Flexible CMOSLissa Eyre; Lissa Eyre; Judith L. MacManus-Driscoll; Robert L. Z. Hoye; Robert L. Z. Hoye; Tahmida N. Huq; Chaewon Kim; Sarah Fearn; Vincenzo Pecunia; Felix Deschler; Weiwei Li; Robert A. Jagt; Lana C. Lee;handle: 10044/1/76892
AbstractIn the search for nontoxic alternatives to lead‐halide perovskites, bismuth oxyiodide (BiOI) has emerged as a promising contender. BiOI is air‐stable for over three months, demonstrates promising early‐stage photovoltaic performance and, importantly, is predicted from calculations to tolerate vacancy and antisite defects. Here, whether BiOI tolerates point defects is experimentally investigated. BiOI thin films are annealed at a low temperature of 100 °C under vacuum (25 Pa absolute pressure). There is a relative reduction in the surface atomic fraction of iodine by over 40%, reduction in the surface bismuth fraction by over 5%, and an increase in the surface oxygen fraction by over 45%. Unexpectedly, the Bi 4f7/2 core level position, Fermi level position, and valence band density of states of BiOI are not significantly changed. Further, the charge‐carrier lifetime, photoluminescence intensity, and the performance of the vacuum‐annealed BiOI films in solar cells remain unchanged. The results show BiOI to be electronically and optoelectronically robust to percent‐level changes in surface composition. However, from photoinduced current transient spectroscopy measurements, it is found that the as‐grown BiOI films have deep traps located ≈0.3 and 0.6 eV from the band edge. These traps limit the charge‐carrier lifetimes of BiOI, and future improvements in the performance of BiOI photovoltaics will need to focus on identifying their origin. Nevertheless, these deep traps are three to four orders of magnitude less concentrated than the surface point defects induced through vacuum annealing. The charge‐carrier lifetimes of the BiOI films are also orders of magnitude longer than if these surface defects were recombination active. This work therefore shows BiOI to be robust against processing conditions that lead to percent‐level iodine‐, bismuth‐, and oxygen‐related surface defects. This will simplify and reduce the cost of fabricating BiOI‐based electronic devices, and stands in contrast to the defect‐sensitivity of traditional covalent semiconductors.
Imperial College Lon... arrow_drop_down Imperial College London: SpiralArticle . 2020License: CC BYFull-Text: http://hdl.handle.net/10044/1/76892Data sources: Bielefeld Academic Search Engine (BASE)Spiral - Imperial College Digital RepositoryArticle . 2020Data sources: Spiral - Imperial College Digital Repositoryadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1002/adfm.201909983&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen hybrid 53 citations 53 popularity Top 1% influence Top 10% impulse Top 1% Powered by BIP!
more_vert Imperial College Lon... arrow_drop_down Imperial College London: SpiralArticle . 2020License: CC BYFull-Text: http://hdl.handle.net/10044/1/76892Data sources: Bielefeld Academic Search Engine (BASE)Spiral - Imperial College Digital RepositoryArticle . 2020Data sources: Spiral - Imperial College Digital Repositoryadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1002/adfm.201909983&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2020Embargo end date: 21 Jan 2020 United KingdomPublisher:Wiley Funded by:DFG, UKRI | Equipment Account: Integr..., UKRI | Precision Manufacturing o...DFG ,UKRI| Equipment Account: Integrated Thin Film Deposition and Analysis System ,UKRI| Precision Manufacturing of Flexible CMOSLissa Eyre; Lissa Eyre; Judith L. MacManus-Driscoll; Robert L. Z. Hoye; Robert L. Z. Hoye; Tahmida N. Huq; Chaewon Kim; Sarah Fearn; Vincenzo Pecunia; Felix Deschler; Weiwei Li; Robert A. Jagt; Lana C. Lee;handle: 10044/1/76892
AbstractIn the search for nontoxic alternatives to lead‐halide perovskites, bismuth oxyiodide (BiOI) has emerged as a promising contender. BiOI is air‐stable for over three months, demonstrates promising early‐stage photovoltaic performance and, importantly, is predicted from calculations to tolerate vacancy and antisite defects. Here, whether BiOI tolerates point defects is experimentally investigated. BiOI thin films are annealed at a low temperature of 100 °C under vacuum (25 Pa absolute pressure). There is a relative reduction in the surface atomic fraction of iodine by over 40%, reduction in the surface bismuth fraction by over 5%, and an increase in the surface oxygen fraction by over 45%. Unexpectedly, the Bi 4f7/2 core level position, Fermi level position, and valence band density of states of BiOI are not significantly changed. Further, the charge‐carrier lifetime, photoluminescence intensity, and the performance of the vacuum‐annealed BiOI films in solar cells remain unchanged. The results show BiOI to be electronically and optoelectronically robust to percent‐level changes in surface composition. However, from photoinduced current transient spectroscopy measurements, it is found that the as‐grown BiOI films have deep traps located ≈0.3 and 0.6 eV from the band edge. These traps limit the charge‐carrier lifetimes of BiOI, and future improvements in the performance of BiOI photovoltaics will need to focus on identifying their origin. Nevertheless, these deep traps are three to four orders of magnitude less concentrated than the surface point defects induced through vacuum annealing. The charge‐carrier lifetimes of the BiOI films are also orders of magnitude longer than if these surface defects were recombination active. This work therefore shows BiOI to be robust against processing conditions that lead to percent‐level iodine‐, bismuth‐, and oxygen‐related surface defects. This will simplify and reduce the cost of fabricating BiOI‐based electronic devices, and stands in contrast to the defect‐sensitivity of traditional covalent semiconductors.
Imperial College Lon... arrow_drop_down Imperial College London: SpiralArticle . 2020License: CC BYFull-Text: http://hdl.handle.net/10044/1/76892Data sources: Bielefeld Academic Search Engine (BASE)Spiral - Imperial College Digital RepositoryArticle . 2020Data sources: Spiral - Imperial College Digital Repositoryadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1002/adfm.201909983&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen hybrid 53 citations 53 popularity Top 1% influence Top 10% impulse Top 1% Powered by BIP!
more_vert Imperial College Lon... arrow_drop_down Imperial College London: SpiralArticle . 2020License: CC BYFull-Text: http://hdl.handle.net/10044/1/76892Data sources: Bielefeld Academic Search Engine (BASE)Spiral - Imperial College Digital RepositoryArticle . 2020Data sources: Spiral - Imperial College Digital Repositoryadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1002/adfm.201909983&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2018Embargo end date: 24 Sep 2018 United KingdomPublisher:AIP Publishing Authors: Lee, Lana; Huq, Tahmida; Driscoll, Judith; Hoye, RLZ;handle: 10044/1/75983
Bismuth-based compounds have recently gained interest as solar absorbers with the potential to have low toxicity, be efficient in devices, and be processable using facile methods. We review recent theoretical and experimental investigations into bismuth-based compounds, which shape our understanding of their photovoltaic potential, with particular focus on their defect-tolerance. We also review the processing methods that have been used to control the structural and optoelectronic properties of single crystals and thin films. Additionally, we discuss the key factors limiting their device performance, as well as the future steps needed to ultimately realize these new materials for commercial applications.
Imperial College Lon... arrow_drop_down Imperial College London: SpiralArticle . 2018License: CC BYFull-Text: http://hdl.handle.net/10044/1/75983Data sources: Bielefeld Academic Search Engine (BASE)Spiral - Imperial College Digital RepositoryArticle . 2018Data sources: Spiral - Imperial College Digital Repositoryadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1063/1.5029484&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 96 citations 96 popularity Top 1% influence Top 10% impulse Top 1% Powered by BIP!
more_vert Imperial College Lon... arrow_drop_down Imperial College London: SpiralArticle . 2018License: CC BYFull-Text: http://hdl.handle.net/10044/1/75983Data sources: Bielefeld Academic Search Engine (BASE)Spiral - Imperial College Digital RepositoryArticle . 2018Data sources: Spiral - Imperial College Digital Repositoryadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1063/1.5029484&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2018Embargo end date: 24 Sep 2018 United KingdomPublisher:AIP Publishing Authors: Lee, Lana; Huq, Tahmida; Driscoll, Judith; Hoye, RLZ;handle: 10044/1/75983
Bismuth-based compounds have recently gained interest as solar absorbers with the potential to have low toxicity, be efficient in devices, and be processable using facile methods. We review recent theoretical and experimental investigations into bismuth-based compounds, which shape our understanding of their photovoltaic potential, with particular focus on their defect-tolerance. We also review the processing methods that have been used to control the structural and optoelectronic properties of single crystals and thin films. Additionally, we discuss the key factors limiting their device performance, as well as the future steps needed to ultimately realize these new materials for commercial applications.
Imperial College Lon... arrow_drop_down Imperial College London: SpiralArticle . 2018License: CC BYFull-Text: http://hdl.handle.net/10044/1/75983Data sources: Bielefeld Academic Search Engine (BASE)Spiral - Imperial College Digital RepositoryArticle . 2018Data sources: Spiral - Imperial College Digital Repositoryadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1063/1.5029484&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 96 citations 96 popularity Top 1% influence Top 10% impulse Top 1% Powered by BIP!
more_vert Imperial College Lon... arrow_drop_down Imperial College London: SpiralArticle . 2018License: CC BYFull-Text: http://hdl.handle.net/10044/1/75983Data sources: Bielefeld Academic Search Engine (BASE)Spiral - Imperial College Digital RepositoryArticle . 2018Data sources: Spiral - Imperial College Digital Repositoryadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1063/1.5029484&type=result"></script>'); --> </script>
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description Publicationkeyboard_double_arrow_right Article , Preprint , Journal 2020Embargo end date: 01 Jan 2019 China (People's Republic of), United Kingdom, France, China (People's Republic of), China (People's Republic of)Publisher:Elsevier BV Funded by:UKRI | EPSRC Centre for Doctoral..., UKRI | Equipment Account: Integr..., UKRI | ECCS - EPSRC Development ... +6 projectsUKRI| EPSRC Centre for Doctoral Training in Graphene Technology ,UKRI| Equipment Account: Integrated Thin Film Deposition and Analysis System ,UKRI| ECCS - EPSRC Development of uniform, low power, high density resistive memory by vertical interface and defect design ,UKRI| Control of spin and coherence in electronic excitations in organic and hybrid organic/inorganic semiconductor structures ,UKRI| DTP 2016-2017 University of Cambridge ,UKRI| Precision Manufacturing of Flexible CMOS ,ANR| InHyMat-PV ,EC| Robust OTFT sensors ,UKRI| Centre for Advanced Materials for Integrated Energy Systems (CAM-IES)Philip Schulz; Judith L. MacManus-Driscoll; Wen Li; Wen Li; Mark Nikolka; Henry J. Snaith; Solène Béchu; Weiwei Li; Robert A. Jagt; Robert L. Z. Hoye; Robert L. Z. Hoye; Yen-Hung Lin; Mathieu Frégnaux; Zewei Li; R. D. Raninga; Tahmida N. Huq; Muriel Bouttemy; Mengyao Sun;handle: 10044/1/80123
Thin (approximately 10 nm) oxide buffer layers grown over lead-halide perovskite device stacks are critical for protecting the perovskite against mechanical and environmental damage. However, the limited perovskite stability restricts the processing methods and temperatures (<=110 C) that can be used to deposit the oxide overlayers, with the latter limiting the electronic properties of the oxides achievable. In this work, we demonstrate an alternative to existing methods that can grow pinhole-free TiOx (x = 2.00+/-0.05) films with the requisite thickness in <1 min without vacuum. This technique is atmospheric pressure chemical vapor deposition (AP-CVD). The rapid but soft deposition enables growth temperatures of >=180 ��C to be used to coat the perovskite. This is >=70 ��C higher than achievable by current methods and results in more conductive TiOx films, boosting solar cell efficiencies by >2%. Likewise, when AP-CVD SnOx (x ~ 2) is grown on perovskites, there is also minimal damage to the perovskite beneath. The SnOx layer is pinhole-free and conformal, which reduces shunting in devices, and increases steady-state efficiencies from 16.5% (no SnOx) to 19.4% (60 nm SnOx), with fill factors reaching 84%. This work shows AP-CVD to be a versatile technique for growing oxides on thermally-sensitive materials. R.D.R and R.A.J contributed equally. 23 pages. 6 figures
Hyper Article en Lig... arrow_drop_down Imperial College London: SpiralArticle . 2020License: CC BY NC NDFull-Text: http://hdl.handle.net/10044/1/80123Data sources: Bielefeld Academic Search Engine (BASE)Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQArticle . 2020Full-Text: https://hal.science/hal-03032363Data sources: Bielefeld Academic Search Engine (BASE)Spiral - Imperial College Digital RepositoryArticle . 2020Data sources: Spiral - Imperial College Digital Repositoryhttps://dx.doi.org/10.48550/ar...Article . 2019License: arXiv Non-Exclusive DistributionData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.nanoen.2020.104946&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen bronze 25 citations 25 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
more_vert Hyper Article en Lig... arrow_drop_down Imperial College London: SpiralArticle . 2020License: CC BY NC NDFull-Text: http://hdl.handle.net/10044/1/80123Data sources: Bielefeld Academic Search Engine (BASE)Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQArticle . 2020Full-Text: https://hal.science/hal-03032363Data sources: Bielefeld Academic Search Engine (BASE)Spiral - Imperial College Digital RepositoryArticle . 2020Data sources: Spiral - Imperial College Digital Repositoryhttps://dx.doi.org/10.48550/ar...Article . 2019License: arXiv Non-Exclusive DistributionData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.nanoen.2020.104946&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Preprint , Journal 2020Embargo end date: 01 Jan 2019 China (People's Republic of), United Kingdom, France, China (People's Republic of), China (People's Republic of)Publisher:Elsevier BV Funded by:UKRI | EPSRC Centre for Doctoral..., UKRI | Equipment Account: Integr..., UKRI | ECCS - EPSRC Development ... +6 projectsUKRI| EPSRC Centre for Doctoral Training in Graphene Technology ,UKRI| Equipment Account: Integrated Thin Film Deposition and Analysis System ,UKRI| ECCS - EPSRC Development of uniform, low power, high density resistive memory by vertical interface and defect design ,UKRI| Control of spin and coherence in electronic excitations in organic and hybrid organic/inorganic semiconductor structures ,UKRI| DTP 2016-2017 University of Cambridge ,UKRI| Precision Manufacturing of Flexible CMOS ,ANR| InHyMat-PV ,EC| Robust OTFT sensors ,UKRI| Centre for Advanced Materials for Integrated Energy Systems (CAM-IES)Philip Schulz; Judith L. MacManus-Driscoll; Wen Li; Wen Li; Mark Nikolka; Henry J. Snaith; Solène Béchu; Weiwei Li; Robert A. Jagt; Robert L. Z. Hoye; Robert L. Z. Hoye; Yen-Hung Lin; Mathieu Frégnaux; Zewei Li; R. D. Raninga; Tahmida N. Huq; Muriel Bouttemy; Mengyao Sun;handle: 10044/1/80123
Thin (approximately 10 nm) oxide buffer layers grown over lead-halide perovskite device stacks are critical for protecting the perovskite against mechanical and environmental damage. However, the limited perovskite stability restricts the processing methods and temperatures (<=110 C) that can be used to deposit the oxide overlayers, with the latter limiting the electronic properties of the oxides achievable. In this work, we demonstrate an alternative to existing methods that can grow pinhole-free TiOx (x = 2.00+/-0.05) films with the requisite thickness in <1 min without vacuum. This technique is atmospheric pressure chemical vapor deposition (AP-CVD). The rapid but soft deposition enables growth temperatures of >=180 ��C to be used to coat the perovskite. This is >=70 ��C higher than achievable by current methods and results in more conductive TiOx films, boosting solar cell efficiencies by >2%. Likewise, when AP-CVD SnOx (x ~ 2) is grown on perovskites, there is also minimal damage to the perovskite beneath. The SnOx layer is pinhole-free and conformal, which reduces shunting in devices, and increases steady-state efficiencies from 16.5% (no SnOx) to 19.4% (60 nm SnOx), with fill factors reaching 84%. This work shows AP-CVD to be a versatile technique for growing oxides on thermally-sensitive materials. R.D.R and R.A.J contributed equally. 23 pages. 6 figures
Hyper Article en Lig... arrow_drop_down Imperial College London: SpiralArticle . 2020License: CC BY NC NDFull-Text: http://hdl.handle.net/10044/1/80123Data sources: Bielefeld Academic Search Engine (BASE)Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQArticle . 2020Full-Text: https://hal.science/hal-03032363Data sources: Bielefeld Academic Search Engine (BASE)Spiral - Imperial College Digital RepositoryArticle . 2020Data sources: Spiral - Imperial College Digital Repositoryhttps://dx.doi.org/10.48550/ar...Article . 2019License: arXiv Non-Exclusive DistributionData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.nanoen.2020.104946&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen bronze 25 citations 25 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
more_vert Hyper Article en Lig... arrow_drop_down Imperial College London: SpiralArticle . 2020License: CC BY NC NDFull-Text: http://hdl.handle.net/10044/1/80123Data sources: Bielefeld Academic Search Engine (BASE)Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQArticle . 2020Full-Text: https://hal.science/hal-03032363Data sources: Bielefeld Academic Search Engine (BASE)Spiral - Imperial College Digital RepositoryArticle . 2020Data sources: Spiral - Imperial College Digital Repositoryhttps://dx.doi.org/10.48550/ar...Article . 2019License: arXiv Non-Exclusive DistributionData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.nanoen.2020.104946&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2017Embargo end date: 23 Aug 2017 United Kingdom, United StatesPublisher:Wiley Authors: Tonio Buonassisi; Judith L. MacManus-Driscoll; Rachel C. Kurchin; Melany Sponseller; +14 AuthorsTonio Buonassisi; Judith L. MacManus-Driscoll; Rachel C. Kurchin; Melany Sponseller; Lana C. Lee; Joel Jean; Robert L. Z. Hoye; Robert L. Z. Hoye; Moungi G. Bawendi; Kelvin H. L. Zhang; Lea Nienhaus; Ahmed Kursumovic; James Alexander Polizzotti; Vladimir Bulovic; Vladan Stevanović; Vladan Stevanović; Riley E. Brandt; Tahmida N. Huq;pmid: 28715091
handle: 1721.1/113014 , 10044/1/75943
Bismuth‐based compounds have recently gained increasing attention as potentially nontoxic and defect‐tolerant solar absorbers. However, many of the new materials recently investigated show limited photovoltaic performance. Herein, one such compound is explored in detail through theory and experiment: bismuth oxyiodide (BiOI). BiOI thin films are grown by chemical vapor transport and found to maintain the same tetragonal phase in ambient air for at least 197 d. The computations suggest BiOI to be tolerant to antisite and vacancy defects. All‐inorganic solar cells (ITO|NiOx|BiOI|ZnO|Al) with negligible hysteresis and up to 80% external quantum efficiency under select monochromatic excitation are demonstrated. The short‐circuit current densities and power conversion efficiencies under AM 1.5G illumination are nearly double those of previously reported BiOI solar cells, as well as other bismuth halide and chalcohalide photovoltaics recently explored by many groups. Through a detailed loss analysis using optical characterization, photoemission spectroscopy, and device modeling, direction for future improvements in efficiency is provided. This work demonstrates that BiOI, previously considered to be a poor photocatalyst, is promising for photovoltaics.
DSpace@MIT (Massachu... arrow_drop_down DSpace@MIT (Massachusetts Institute of Technology)Article . 2018License: CC BYFull-Text: http://dx.doi.org/10.1002/ADMA.201702176Data sources: Bielefeld Academic Search Engine (BASE)Imperial College London: SpiralArticle . 2017License: CC BYFull-Text: http://hdl.handle.net/10044/1/75943Data sources: Bielefeld Academic Search Engine (BASE)Spiral - Imperial College Digital RepositoryArticle . 2017Data sources: Spiral - Imperial College Digital Repositoryadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1002/adma.201702176&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen hybrid 165 citations 165 popularity Top 1% influence Top 10% impulse Top 1% Powered by BIP!
more_vert DSpace@MIT (Massachu... arrow_drop_down DSpace@MIT (Massachusetts Institute of Technology)Article . 2018License: CC BYFull-Text: http://dx.doi.org/10.1002/ADMA.201702176Data sources: Bielefeld Academic Search Engine (BASE)Imperial College London: SpiralArticle . 2017License: CC BYFull-Text: http://hdl.handle.net/10044/1/75943Data sources: Bielefeld Academic Search Engine (BASE)Spiral - Imperial College Digital RepositoryArticle . 2017Data sources: Spiral - Imperial College Digital Repositoryadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1002/adma.201702176&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2017Embargo end date: 23 Aug 2017 United Kingdom, United StatesPublisher:Wiley Authors: Tonio Buonassisi; Judith L. MacManus-Driscoll; Rachel C. Kurchin; Melany Sponseller; +14 AuthorsTonio Buonassisi; Judith L. MacManus-Driscoll; Rachel C. Kurchin; Melany Sponseller; Lana C. Lee; Joel Jean; Robert L. Z. Hoye; Robert L. Z. Hoye; Moungi G. Bawendi; Kelvin H. L. Zhang; Lea Nienhaus; Ahmed Kursumovic; James Alexander Polizzotti; Vladimir Bulovic; Vladan Stevanović; Vladan Stevanović; Riley E. Brandt; Tahmida N. Huq;pmid: 28715091
handle: 1721.1/113014 , 10044/1/75943
Bismuth‐based compounds have recently gained increasing attention as potentially nontoxic and defect‐tolerant solar absorbers. However, many of the new materials recently investigated show limited photovoltaic performance. Herein, one such compound is explored in detail through theory and experiment: bismuth oxyiodide (BiOI). BiOI thin films are grown by chemical vapor transport and found to maintain the same tetragonal phase in ambient air for at least 197 d. The computations suggest BiOI to be tolerant to antisite and vacancy defects. All‐inorganic solar cells (ITO|NiOx|BiOI|ZnO|Al) with negligible hysteresis and up to 80% external quantum efficiency under select monochromatic excitation are demonstrated. The short‐circuit current densities and power conversion efficiencies under AM 1.5G illumination are nearly double those of previously reported BiOI solar cells, as well as other bismuth halide and chalcohalide photovoltaics recently explored by many groups. Through a detailed loss analysis using optical characterization, photoemission spectroscopy, and device modeling, direction for future improvements in efficiency is provided. This work demonstrates that BiOI, previously considered to be a poor photocatalyst, is promising for photovoltaics.
DSpace@MIT (Massachu... arrow_drop_down DSpace@MIT (Massachusetts Institute of Technology)Article . 2018License: CC BYFull-Text: http://dx.doi.org/10.1002/ADMA.201702176Data sources: Bielefeld Academic Search Engine (BASE)Imperial College London: SpiralArticle . 2017License: CC BYFull-Text: http://hdl.handle.net/10044/1/75943Data sources: Bielefeld Academic Search Engine (BASE)Spiral - Imperial College Digital RepositoryArticle . 2017Data sources: Spiral - Imperial College Digital Repositoryadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1002/adma.201702176&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen hybrid 165 citations 165 popularity Top 1% influence Top 10% impulse Top 1% Powered by BIP!
more_vert DSpace@MIT (Massachu... arrow_drop_down DSpace@MIT (Massachusetts Institute of Technology)Article . 2018License: CC BYFull-Text: http://dx.doi.org/10.1002/ADMA.201702176Data sources: Bielefeld Academic Search Engine (BASE)Imperial College London: SpiralArticle . 2017License: CC BYFull-Text: http://hdl.handle.net/10044/1/75943Data sources: Bielefeld Academic Search Engine (BASE)Spiral - Imperial College Digital RepositoryArticle . 2017Data sources: Spiral - Imperial College Digital Repositoryadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1002/adma.201702176&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2020Embargo end date: 21 Jan 2020 United KingdomPublisher:Wiley Funded by:DFG, UKRI | Equipment Account: Integr..., UKRI | Precision Manufacturing o...DFG ,UKRI| Equipment Account: Integrated Thin Film Deposition and Analysis System ,UKRI| Precision Manufacturing of Flexible CMOSLissa Eyre; Lissa Eyre; Judith L. MacManus-Driscoll; Robert L. Z. Hoye; Robert L. Z. Hoye; Tahmida N. Huq; Chaewon Kim; Sarah Fearn; Vincenzo Pecunia; Felix Deschler; Weiwei Li; Robert A. Jagt; Lana C. Lee;handle: 10044/1/76892
AbstractIn the search for nontoxic alternatives to lead‐halide perovskites, bismuth oxyiodide (BiOI) has emerged as a promising contender. BiOI is air‐stable for over three months, demonstrates promising early‐stage photovoltaic performance and, importantly, is predicted from calculations to tolerate vacancy and antisite defects. Here, whether BiOI tolerates point defects is experimentally investigated. BiOI thin films are annealed at a low temperature of 100 °C under vacuum (25 Pa absolute pressure). There is a relative reduction in the surface atomic fraction of iodine by over 40%, reduction in the surface bismuth fraction by over 5%, and an increase in the surface oxygen fraction by over 45%. Unexpectedly, the Bi 4f7/2 core level position, Fermi level position, and valence band density of states of BiOI are not significantly changed. Further, the charge‐carrier lifetime, photoluminescence intensity, and the performance of the vacuum‐annealed BiOI films in solar cells remain unchanged. The results show BiOI to be electronically and optoelectronically robust to percent‐level changes in surface composition. However, from photoinduced current transient spectroscopy measurements, it is found that the as‐grown BiOI films have deep traps located ≈0.3 and 0.6 eV from the band edge. These traps limit the charge‐carrier lifetimes of BiOI, and future improvements in the performance of BiOI photovoltaics will need to focus on identifying their origin. Nevertheless, these deep traps are three to four orders of magnitude less concentrated than the surface point defects induced through vacuum annealing. The charge‐carrier lifetimes of the BiOI films are also orders of magnitude longer than if these surface defects were recombination active. This work therefore shows BiOI to be robust against processing conditions that lead to percent‐level iodine‐, bismuth‐, and oxygen‐related surface defects. This will simplify and reduce the cost of fabricating BiOI‐based electronic devices, and stands in contrast to the defect‐sensitivity of traditional covalent semiconductors.
Imperial College Lon... arrow_drop_down Imperial College London: SpiralArticle . 2020License: CC BYFull-Text: http://hdl.handle.net/10044/1/76892Data sources: Bielefeld Academic Search Engine (BASE)Spiral - Imperial College Digital RepositoryArticle . 2020Data sources: Spiral - Imperial College Digital Repositoryadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1002/adfm.201909983&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen hybrid 53 citations 53 popularity Top 1% influence Top 10% impulse Top 1% Powered by BIP!
more_vert Imperial College Lon... arrow_drop_down Imperial College London: SpiralArticle . 2020License: CC BYFull-Text: http://hdl.handle.net/10044/1/76892Data sources: Bielefeld Academic Search Engine (BASE)Spiral - Imperial College Digital RepositoryArticle . 2020Data sources: Spiral - Imperial College Digital Repositoryadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1002/adfm.201909983&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2020Embargo end date: 21 Jan 2020 United KingdomPublisher:Wiley Funded by:DFG, UKRI | Equipment Account: Integr..., UKRI | Precision Manufacturing o...DFG ,UKRI| Equipment Account: Integrated Thin Film Deposition and Analysis System ,UKRI| Precision Manufacturing of Flexible CMOSLissa Eyre; Lissa Eyre; Judith L. MacManus-Driscoll; Robert L. Z. Hoye; Robert L. Z. Hoye; Tahmida N. Huq; Chaewon Kim; Sarah Fearn; Vincenzo Pecunia; Felix Deschler; Weiwei Li; Robert A. Jagt; Lana C. Lee;handle: 10044/1/76892
AbstractIn the search for nontoxic alternatives to lead‐halide perovskites, bismuth oxyiodide (BiOI) has emerged as a promising contender. BiOI is air‐stable for over three months, demonstrates promising early‐stage photovoltaic performance and, importantly, is predicted from calculations to tolerate vacancy and antisite defects. Here, whether BiOI tolerates point defects is experimentally investigated. BiOI thin films are annealed at a low temperature of 100 °C under vacuum (25 Pa absolute pressure). There is a relative reduction in the surface atomic fraction of iodine by over 40%, reduction in the surface bismuth fraction by over 5%, and an increase in the surface oxygen fraction by over 45%. Unexpectedly, the Bi 4f7/2 core level position, Fermi level position, and valence band density of states of BiOI are not significantly changed. Further, the charge‐carrier lifetime, photoluminescence intensity, and the performance of the vacuum‐annealed BiOI films in solar cells remain unchanged. The results show BiOI to be electronically and optoelectronically robust to percent‐level changes in surface composition. However, from photoinduced current transient spectroscopy measurements, it is found that the as‐grown BiOI films have deep traps located ≈0.3 and 0.6 eV from the band edge. These traps limit the charge‐carrier lifetimes of BiOI, and future improvements in the performance of BiOI photovoltaics will need to focus on identifying their origin. Nevertheless, these deep traps are three to four orders of magnitude less concentrated than the surface point defects induced through vacuum annealing. The charge‐carrier lifetimes of the BiOI films are also orders of magnitude longer than if these surface defects were recombination active. This work therefore shows BiOI to be robust against processing conditions that lead to percent‐level iodine‐, bismuth‐, and oxygen‐related surface defects. This will simplify and reduce the cost of fabricating BiOI‐based electronic devices, and stands in contrast to the defect‐sensitivity of traditional covalent semiconductors.
Imperial College Lon... arrow_drop_down Imperial College London: SpiralArticle . 2020License: CC BYFull-Text: http://hdl.handle.net/10044/1/76892Data sources: Bielefeld Academic Search Engine (BASE)Spiral - Imperial College Digital RepositoryArticle . 2020Data sources: Spiral - Imperial College Digital Repositoryadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1002/adfm.201909983&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen hybrid 53 citations 53 popularity Top 1% influence Top 10% impulse Top 1% Powered by BIP!
more_vert Imperial College Lon... arrow_drop_down Imperial College London: SpiralArticle . 2020License: CC BYFull-Text: http://hdl.handle.net/10044/1/76892Data sources: Bielefeld Academic Search Engine (BASE)Spiral - Imperial College Digital RepositoryArticle . 2020Data sources: Spiral - Imperial College Digital Repositoryadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1002/adfm.201909983&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2018Embargo end date: 24 Sep 2018 United KingdomPublisher:AIP Publishing Authors: Lee, Lana; Huq, Tahmida; Driscoll, Judith; Hoye, RLZ;handle: 10044/1/75983
Bismuth-based compounds have recently gained interest as solar absorbers with the potential to have low toxicity, be efficient in devices, and be processable using facile methods. We review recent theoretical and experimental investigations into bismuth-based compounds, which shape our understanding of their photovoltaic potential, with particular focus on their defect-tolerance. We also review the processing methods that have been used to control the structural and optoelectronic properties of single crystals and thin films. Additionally, we discuss the key factors limiting their device performance, as well as the future steps needed to ultimately realize these new materials for commercial applications.
Imperial College Lon... arrow_drop_down Imperial College London: SpiralArticle . 2018License: CC BYFull-Text: http://hdl.handle.net/10044/1/75983Data sources: Bielefeld Academic Search Engine (BASE)Spiral - Imperial College Digital RepositoryArticle . 2018Data sources: Spiral - Imperial College Digital Repositoryadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1063/1.5029484&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 96 citations 96 popularity Top 1% influence Top 10% impulse Top 1% Powered by BIP!
more_vert Imperial College Lon... arrow_drop_down Imperial College London: SpiralArticle . 2018License: CC BYFull-Text: http://hdl.handle.net/10044/1/75983Data sources: Bielefeld Academic Search Engine (BASE)Spiral - Imperial College Digital RepositoryArticle . 2018Data sources: Spiral - Imperial College Digital Repositoryadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1063/1.5029484&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2018Embargo end date: 24 Sep 2018 United KingdomPublisher:AIP Publishing Authors: Lee, Lana; Huq, Tahmida; Driscoll, Judith; Hoye, RLZ;handle: 10044/1/75983
Bismuth-based compounds have recently gained interest as solar absorbers with the potential to have low toxicity, be efficient in devices, and be processable using facile methods. We review recent theoretical and experimental investigations into bismuth-based compounds, which shape our understanding of their photovoltaic potential, with particular focus on their defect-tolerance. We also review the processing methods that have been used to control the structural and optoelectronic properties of single crystals and thin films. Additionally, we discuss the key factors limiting their device performance, as well as the future steps needed to ultimately realize these new materials for commercial applications.
Imperial College Lon... arrow_drop_down Imperial College London: SpiralArticle . 2018License: CC BYFull-Text: http://hdl.handle.net/10044/1/75983Data sources: Bielefeld Academic Search Engine (BASE)Spiral - Imperial College Digital RepositoryArticle . 2018Data sources: Spiral - Imperial College Digital Repositoryadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1063/1.5029484&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 96 citations 96 popularity Top 1% influence Top 10% impulse Top 1% Powered by BIP!
more_vert Imperial College Lon... arrow_drop_down Imperial College London: SpiralArticle . 2018License: CC BYFull-Text: http://hdl.handle.net/10044/1/75983Data sources: Bielefeld Academic Search Engine (BASE)Spiral - Imperial College Digital RepositoryArticle . 2018Data sources: Spiral - Imperial College Digital Repositoryadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1063/1.5029484&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu