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Improving the Bulk Emission Properties of CH3NH3PbBr3 by Modifying the Halide-Related Defect Structure

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Download Hi-Res ImageDownload to MS-PowerPointCite This:J. Phys. Chem. C 2018, 122, 48, 27250-27255
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    Improving the Bulk Emission Properties of CH3NH3PbBr3 by Modifying the Halide-Related Defect Structure
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    • David O. Tiede
      David O. Tiede
      Instituto de Ciencia de Materiales de Sevilla (Consejo Superior de Investigaciones Científicas-Universidad de Sevilla), C/Américo Vespucio 49, 41092 Sevilla, Spain
      More by David O. Tiede
    • Mauricio E. Calvo
      Mauricio E. Calvo
      Instituto de Ciencia de Materiales de Sevilla (Consejo Superior de Investigaciones Científicas-Universidad de Sevilla), C/Américo Vespucio 49, 41092 Sevilla, Spain
      More by Mauricio E. Calvo
      Orcidhttp://orcid.org/0000-0002-1721-7260
    • Juan F. Galisteo-López*
      Juan F. Galisteo-López
      Instituto de Ciencia de Materiales de Sevilla (Consejo Superior de Investigaciones Científicas-Universidad de Sevilla), C/Américo Vespucio 49, 41092 Sevilla, Spain
      *E-mail: [email protected] (J.F.G.-L.).
      More by Juan F. Galisteo-López
    • Hernán Míguez*
      Hernán Míguez
      Instituto de Ciencia de Materiales de Sevilla (Consejo Superior de Investigaciones Científicas-Universidad de Sevilla), C/Américo Vespucio 49, 41092 Sevilla, Spain
      *E-mail: [email protected] (H.M.).
      More by Hernán Míguez
      Orcidhttp://orcid.org/0000-0003-2925-6360
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    The Journal of Physical Chemistry C

    Cite this: J. Phys. Chem. C 2018, 122, 48, 27250–27255
    Click to copy citationCitation copied!
    https://doi.org/10.1021/acs.jpcc.8b09315
    Published November 12, 2018
    Copyright © 2018 American Chemical Society
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    Abstract

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    The peculiar defect chemistry of hybrid organic–inorganic lead halide perovskites is believed to be partially responsible for the outstanding performance of this solution-processed material in optoelectronic devices. While most effort has been put on the management of halide defects (the ones presenting the highest mobility) for CH3NH3PbI3, its bromide counterpart has not been so widely studied. Although the former is the material of choice for photovoltaics, the latter is present in most light-emitting applications. Here, we report how the exposure of CH3NH3PbBr3 single crystals to a bromine atmosphere strongly affects its emission properties. Such improvement takes place in the absence of apparent signs of degradation and remains for tens of hours. We propose an explanation based on the defect structure for this material where bromine-related defects can act as deep or shallow traps. These results are of relevance for a material expected to be present in a new generation of solution-processed light-emitting devices.

    Copyright © 2018 American Chemical Society

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    Supporting Information

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    The Supporting Information is available free of charge on the ACS Publications website at DOI: 10.1021/acs.jpcc.8b09315.

    • Experimental (optical characterization, bromine flux, SEM and EDS, XRD); lifetime measurements over different micro-crystals; PL changes under bromine flux combined with inert gases; XRD study of activated sample under bromine flux; study of sample degradation under prolonged bromine flux (PDF)

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    Cited By

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    This article is cited by 5 publications.

    1. Juan F. Galisteo-López, Mauricio E. Calvo, Hernán Míguez. Spatially Resolved Analysis of Defect Annihilation and Recovery Dynamics in Metal Halide Perovskite Single Crystals. ACS Applied Energy Materials 2019, 2 (10) , 6967-6972. https://doi.org/10.1021/acsaem.9b01335
    2. Camilo Segura, Mario E. Flores, Igor Osorio‐Román, Danilo H. Jara‐Quinteros, Seog Joon Yoon, Andrés F. Gualdrón‐Reyes. Lead‐Free Perovskite‐Based Photocatalysts for Solar‐Driven Chemistry Technologies. ChemistrySelect 2024, 9 (25) https://doi.org/10.1002/slct.202305225
    3. Vladimir S. Chirvony. Intrinsic and delayed band-to-band and excitonic luminescence in metal halide perovskites. 2023, 49-61. https://doi.org/10.1016/B978-0-323-91661-5.00006-4
    4. Takuya Okamoto, Md. Shahjahan, Vasudevanpillai Biju. Shape‐Dependent Kinetics of Halide Vacancy Filling in Organolead Halide Perovskites. Advanced Optical Materials 2021, 9 (19) https://doi.org/10.1002/adom.202100355
    5. Yuki Tezuka, Kazuki Umemoto, Masaki Takeda, Yoshihito Takahashi, Hinako Ebe, Junya Enomoto, Sasiphapa Rodbuntum, Tomohiro Nohara, Daniela Fontecha, Satoshi Asakura, Takayuki Chiba, Madalina Ioana Furis, Tsukasa Yoshida, Hiroshi Uji-i, Akito Masuhara. Effects of alkylamine chain length on perovskite nanocrystals after washing and perovskite light-emitting diodes. Japanese Journal of Applied Physics 2020, 59 (SD) , SDDC04. https://doi.org/10.7567/1347-4065/ab4ecd
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    The Journal of Physical Chemistry C

    Cite this: J. Phys. Chem. C 2018, 122, 48, 27250–27255
    Click to copy citationCitation copied!
    https://doi.org/10.1021/acs.jpcc.8b09315
    Published November 12, 2018
    Copyright © 2018 American Chemical Society
    Request reuse permissions

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