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  • How Exciton Interactions Control Spin-Depolarization in Layered Hybrid Perovskites

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    descriptionPublicationkeyboard_double_arrow_right Article , Journal 2020 Italy Publisher:American Chemical Society (ACS)Funded by:DFG, UKRI | Strategic University Netw..., UKRI | EPSRC Centre for Doctoral... +2 projects
    Authors: Giulio Cerullo; Satyaprasad P. Senanayak; Satyaprasad P. Senanayak; Soumen Ghosh; +13 Authors

    doi: 10.1021/acs.nanolett.0c00867

    pmid: 32574069

    handle: 20.500.14243/511976 , 11311/1175961

    Using circularly polarized broadband transient absorption, time-resolved circular photoluminescence, and transient Faraday rotation spectroscopy, we report that spin-dependent interactions have a significant impact on exciton energies and spin depolarization times in layered Ruddlesden-Popper hybrid metal-halide perovskites. In BA2FAPb2I7, we report that room-temperature spin lifetimes are largest (3.2 ps) at a carrier density of ∼1017 cm-3 with increasing depolarization rates at higher exciton densities. This indicates that many-body interactions reduce spin-lifetimes and outcompete the effect of D'yakonov-Perel precessional relaxation that has been previously reported at lower carrier densities. We further observe a dynamic circular dichroism that arises from a photoinduced polarization in the exciton distribution between total angular momentum states. Our findings provide fundamental and application relevant insights into the spin-dependent exciton-exciton interactions in layered hybrid perovskites.

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    IRIS Cnr
    Article . 2020
    Full-Text: https://iris.cnr.it/request-item?handle=20.500.14243/511976&bitstreamId=2d96a20d-6d1b-4282-9421-6baa034a9e0c
    Data sources: IRIS Cnr
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    RE.PUBLIC@POLIMI Research Publications at Politecnico di Milano
    Article . 2020
    Full-Text: https://re.public.polimi.it/bitstream/11311/1175961/2/ExcitonInteractions_Nano%20Letter%20R2.pdf
    Data sources: RE.PUBLIC@POLIMI Research Publications at Politecnico di Milano
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Nano Letters
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    Nano Letters
    Article . 2020 . Peer-reviewed
    License: STM Policy #29
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    Nano Letters
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    License: STM Policy #29
    Full-Text: https://pubs.acs.org/doi/pdf/10.1021/acs.nanolett.0c00867
    Data sources: Sygma
    Nano Letters
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    Nano Letters
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    Nano Letters
    Article . 2020 . Peer-reviewed
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ IRIS Cnrarrow_drop_down
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      Article . 2020
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      RE.PUBLIC@POLIMI Research Publications at Politecnico di Milano
      Article . 2020
      Full-Text: https://re.public.polimi.it/bitstream/11311/1175961/2/ExcitonInteractions_Nano%20Letter%20R2.pdf
      Data sources: RE.PUBLIC@POLIMI Research Publications at Politecnico di Milano
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      Nano Letters
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      Full-Text: https://pubs.acs.org/doi/pdf/10.1021/acs.nanolett.0c00867
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The following results are related to Energy Research. Are you interested to view more results? Visit OpenAIRE - Explore.
1 Research products
download

  • How Exciton Interactions Control Spin-Depolarization in Layered Hybrid Perovskites

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    descriptionPublicationkeyboard_double_arrow_right Article , Journal 2020 Italy Publisher:American Chemical Society (ACS)Funded by:DFG, UKRI | Strategic University Netw..., UKRI | EPSRC Centre for Doctoral... +2 projects
    Authors: Giulio Cerullo; Satyaprasad P. Senanayak; Satyaprasad P. Senanayak; Soumen Ghosh; +13 Authors

    doi: 10.1021/acs.nanolett.0c00867

    pmid: 32574069

    handle: 20.500.14243/511976 , 11311/1175961

    Using circularly polarized broadband transient absorption, time-resolved circular photoluminescence, and transient Faraday rotation spectroscopy, we report that spin-dependent interactions have a significant impact on exciton energies and spin depolarization times in layered Ruddlesden-Popper hybrid metal-halide perovskites. In BA2FAPb2I7, we report that room-temperature spin lifetimes are largest (3.2 ps) at a carrier density of ∼1017 cm-3 with increasing depolarization rates at higher exciton densities. This indicates that many-body interactions reduce spin-lifetimes and outcompete the effect of D'yakonov-Perel precessional relaxation that has been previously reported at lower carrier densities. We further observe a dynamic circular dichroism that arises from a photoinduced polarization in the exciton distribution between total angular momentum states. Our findings provide fundamental and application relevant insights into the spin-dependent exciton-exciton interactions in layered hybrid perovskites.

    downloadFull-Text
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ IRIS Cnrarrow_drop_down
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    IRIS Cnr
    Article . 2020
    Full-Text: https://iris.cnr.it/request-item?handle=20.500.14243/511976&bitstreamId=2d96a20d-6d1b-4282-9421-6baa034a9e0c
    Data sources: IRIS Cnr
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    RE.PUBLIC@POLIMI Research Publications at Politecnico di Milano
    Article . 2020
    Full-Text: https://re.public.polimi.it/bitstream/11311/1175961/2/ExcitonInteractions_Nano%20Letter%20R2.pdf
    Data sources: RE.PUBLIC@POLIMI Research Publications at Politecnico di Milano
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Nano Letters
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    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Nano Letters
    Article . 2020 . Peer-reviewed
    License: STM Policy #29
    Data sources: Crossref
    Nano Letters
    Article
    License: STM Policy #29
    Full-Text: https://pubs.acs.org/doi/pdf/10.1021/acs.nanolett.0c00867
    Data sources: Sygma
    Nano Letters
    Article
    Data sources: Europe PubMed Central
    Nano Letters
    Journal
    Data sources: Microsoft Academic Graph
    Nano Letters
    Article . 2020 . Peer-reviewed
    Data sources: European Union Open Data Portal
    Claim

    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.
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    citations34
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      downloadFull-Text
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ IRIS Cnrarrow_drop_down
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      IRIS Cnr
      Article . 2020
      Full-Text: https://iris.cnr.it/request-item?handle=20.500.14243/511976&bitstreamId=2d96a20d-6d1b-4282-9421-6baa034a9e0c
      Data sources: IRIS Cnr
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      RE.PUBLIC@POLIMI Research Publications at Politecnico di Milano
      Article . 2020
      Full-Text: https://re.public.polimi.it/bitstream/11311/1175961/2/ExcitonInteractions_Nano%20Letter%20R2.pdf
      Data sources: RE.PUBLIC@POLIMI Research Publications at Politecnico di Milano
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      Nano Letters
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      Data sources: UnpayWall
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
      Nano Letters
      Article . 2020 . Peer-reviewed
      License: STM Policy #29
      Data sources: Crossref
      Nano Letters
      Article
      License: STM Policy #29
      Full-Text: https://pubs.acs.org/doi/pdf/10.1021/acs.nanolett.0c00867
      Data sources: Sygma
      Nano Letters
      Article
      Data sources: Europe PubMed Central
      Nano Letters
      Journal
      Data sources: Microsoft Academic Graph
      Nano Letters
      Article . 2020 . Peer-reviewed
      Data sources: European Union Open Data Portal
      Claim

      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.
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