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description Publicationkeyboard_double_arrow_right Article , Journal 2015 ItalyPublisher:Elsevier BV Funded by:EC | NASCENTEC| NASCENTAuthors:Daniela Cavalcoli;
M. Allegrezza;Daniela Cavalcoli
Daniela Cavalcoli in OpenAIREMartina Perani;
Martina Perani
Martina Perani in OpenAIREMariaconcetta Canino;
+2 AuthorsMariaconcetta Canino
Mariaconcetta Canino in OpenAIREDaniela Cavalcoli;
M. Allegrezza;Daniela Cavalcoli
Daniela Cavalcoli in OpenAIREMartina Perani;
Martina Perani
Martina Perani in OpenAIREMariaconcetta Canino;
Caterina Summonte; M. Bellettato;Mariaconcetta Canino
Mariaconcetta Canino in OpenAIRESilicon carbide/silicon rich carbide multilayers, aimed at the formation of silicon nanodots for photovoltaic applications, have been studied. The electrical properties have been investigated at the nano-scale by conductive Atomic Force Microscopy (c-AFM) and at macro-scale by temperature dependent conductivity measurements. The mixture is composed of highly conductive Si nanoclusters and moderately conductive SiC nanoclusters in a disordered matrix. The conduction mechanism takes place via band states induced by the disorder at the interface between nanodot clusters. Structural properties have been extracted by optical spectroscopy analyses. The results contribute to the understanding of the microscopical electronic mechanisms of the composite material, which is a candidate for third generation photovoltaics.
CNR ExploRA arrow_drop_down Solar Energy Materials and Solar CellsArticle . 2015 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd 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.solmat.2014.09.022&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen bronze 11 citations 11 popularity Average influence Average impulse Top 10% Powered by BIP!
more_vert CNR ExploRA arrow_drop_down Solar Energy Materials and Solar CellsArticle . 2015 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd 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.solmat.2014.09.022&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2017 ItalyPublisher:Elsevier BV Funded by:FCT | Core-shell and core-host ..., FCT | Si QuaDot PV, FCT | Institute of Nanostructur...FCT| Core-shell and core-host interactions in functional silicon-nanoparticles ,FCT| Si QuaDot PV ,FCT| Institute of Nanostructures, Nanomodelling and NanofabricationAuthors: Pia Jensen; M. Bellettato; Bjarke R. Jeppesen;Rui N. Pereira;
+9 AuthorsRui N. Pereira
Rui N. Pereira in OpenAIREPia Jensen; M. Bellettato; Bjarke R. Jeppesen;Rui N. Pereira;
Rui N. Pereira;Rui N. Pereira
Rui N. Pereira in OpenAIREBruno P. Falcão;
Emil H. Eriksen; Caterina Summonte; Derese Desta; Peter Balling;Bruno P. Falcão
Bruno P. Falcão in OpenAIRESanjay K. Ram;
Sanjay K. Ram
Sanjay K. Ram in OpenAIRERita Rizzoli;
Arne Nylandsted Larsen;Rita Rizzoli
Rita Rizzoli in OpenAIRESelf-organizing nanopatterns can enable economically competitive, industrially applicable light-harvesting platforms for thin-film solar cells. In this work, we present transparent solar cell substrates having quasiperiodic uniaxial nanowrinkle patterns with high optical haze values. The self-organized nanowrinkle template is created by controlled heat-shrinking of metal-deposited pre-stretched polystyrene sheets. A scalable UV nanoimprinting method is used to transfer the nanopatterns to glass substrates on which single-junction hydrogenated amorphous silicon p-i-n solar cells are subsequently fabricated. The structural and optical analyses of the solar cell show that the nanowrinkle pattern is replicated throughout the solar cell structure leading to enhanced absorption of light. The efficient broadband light-trapping in the nanowrinkle solar cells results in very high 18.2 mA/cm2 short-circuit current density and 9.5% energy-conversion efficiency, which respectively are 35.8% and 39.7% higher than the values obtained in flat-substrate solar cells. The cost- and time-efficient technique introduces a promising new approach to customizable light-management strategies in thin-film solar cells.
add 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.2017.04.016&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen bronze 19 citations 19 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!
more_vert add 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.2017.04.016&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2016 ItalyPublisher:Elsevier BV Funded by:EC | NASCENTEC| NASCENTAuthors: Manuel Schnabel;Sergi Hernández;
Sergi Hernández
Sergi Hernández in OpenAIREJ. López-Vidrier;
Philipp Löper; +4 AuthorsJ. López-Vidrier
J. López-Vidrier in OpenAIREManuel Schnabel;Sergi Hernández;
Sergi Hernández
Sergi Hernández in OpenAIREJ. López-Vidrier;
Philipp Löper;J. López-Vidrier
J. López-Vidrier in OpenAIREMariaconcetta Canino;
B. Garrido; Caterina Summonte; Stefan Janz;Mariaconcetta Canino
Mariaconcetta Canino in OpenAIREThe optical and photovoltaic properties of Si NCs / SiC multilayers (MLs) are investigated using a membrane-based solar cell structure. By removing the Si substrate in the active cell area, the MLs are studied without any bulk Si substrate contribution. The occurrence is confirmed by scanning electron microscopy and light-beam induced current mapping . Optical characterization combined with simulations allows us to determine the absorption within the ML absorber layer, isolated from the other cell stack layers. The results indicate that the absorption at wavelengths longer than 800 nm is only due to the SiC matrix. The measured short-circuit current is significantly lower than that theoretically obtained from absorption within the ML absorber, which is ascribed to losses that limit carrier extraction. The origin of these losses is discussed in terms of the material regions where recombination takes place. Our results indicate that carrier extraction is most efficient from the Si NCs themselves, whereas recombination is strongest in SiC and residual a-Si domains . Together with the observed onset of the external quantum efficiency (EQE) at 700-800 nm, this fact is an evidence of quantum confinement in Si NCs embedded in SiC on device level.
CNR ExploRA arrow_drop_down Solar Energy Materials and Solar CellsArticle . 2016 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd 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.solmat.2015.10.006&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen bronze 11 citations 11 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
more_vert CNR ExploRA arrow_drop_down Solar Energy Materials and Solar CellsArticle . 2016 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd 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.solmat.2015.10.006&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2015 ItalyPublisher:Elsevier BV Funded by:EC | NASCENTEC| NASCENTAuthors: Giulio Paolo Veronese;Vittorio Morandi;
Vittorio Morandi
Vittorio Morandi in OpenAIREMariaconcetta Canino;
E. Centurioni; +4 AuthorsMariaconcetta Canino
Mariaconcetta Canino in OpenAIREGiulio Paolo Veronese;Vittorio Morandi;
Vittorio Morandi
Vittorio Morandi in OpenAIREMariaconcetta Canino;
E. Centurioni; M. Allegrezza;Mariaconcetta Canino
Mariaconcetta Canino in OpenAIRELuca Ortolani;
Caterina Summonte;Luca Ortolani
Luca Ortolani in OpenAIRERita Rizzoli;
Rita Rizzoli
Rita Rizzoli in OpenAIREThe use of graphene as transparent conducting layer in devices that require high temperature processing is proposed. The material shows stability upon thermal treatments up to 1100 °C ifc apped with a sacrificial silicon layer. The use of Cu foil or evaporated Cu as catalysts in Catalytic-Chemical Vapor Deposition growth gives rise to graphene ofs imilar properties, which represents a promising result in view of its direct integration in microelectronic devices. Photovoltaic p-i-n thin film devices were fab- ricated on the as-deposited or annealed graphene membranes and compared with similar devices that incorporate as-deposited Indium Tin Oxide. No degradation in series resistance is observed for the annealed device. A 3.7% and 2.8% photovoltaic conversion efficiency is observed on the devices fabricated on as-transferred and on annealed graphene respectively. The major limitation derives from the high sheet resistance of the as-transferred state-of-the-art material. The results opens the way to the use of graphene in applications that require transparent conducting layers resistant to high temperature pro- cessing.
CNR ExploRA arrow_drop_down Solar Energy Materials and Solar CellsArticle . 2015 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd 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.solmat.2015.02.026&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen bronze 18 citations 18 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
more_vert CNR ExploRA arrow_drop_down Solar Energy Materials and Solar CellsArticle . 2015 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd 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.solmat.2015.02.026&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2019Publisher:Elsevier BV Authors:Massimiliano M. Villone;
Massimiliano M. Villone
Massimiliano M. Villone in OpenAIREMartien A. Hulsen;
Martien A. Hulsen
Martien A. Hulsen in OpenAIREPier Luca Maffettone;
Pier Luca Maffettone
Pier Luca Maffettone in OpenAIREUnderstanding how the deformation history affects the retraction dynamics of viscoelastic liquid films can provide a tool to design materials. In this paper, we investigate the stretching and retraction of circular viscoelastic liquid films through finite element numerical simulations. We consider a discoid domain made of a viscoelastic liquid. Its central hole is first ‘closed’ and then released, being left free to open under the effect of inertial, surface, viscous, and elastic forces. We perform a parametric study of film retraction, aiming at understanding the effects of the physical and operating parameters on it. In particular, we consider different viscoelastic constitutive equations, namely, Oldroyd-B, Giesekus (Gsk), and Phan Thien-Tanner (PTT) models, and different values of the film initial thickness. For each liquid and geometry, we investigate the effects of the film stretching rate and of liquid inertia, elasticity, and flow-dependent viscosity on the dynamics of the hole opening.
Journal of Non-Newto... arrow_drop_down Journal of Non-Newtonian Fluid MechanicsArticle . 2019Data sources: DANS (Data Archiving and Networked Services)Journal of Non-Newtonian Fluid MechanicsArticle . 2019 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd 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.jnnfm.2019.03.001&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesbronze 5 citations 5 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
more_vert Journal of Non-Newto... arrow_drop_down Journal of Non-Newtonian Fluid MechanicsArticle . 2019Data sources: DANS (Data Archiving and Networked Services)Journal of Non-Newtonian Fluid MechanicsArticle . 2019 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd 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.jnnfm.2019.03.001&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu