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Ultrahigh sensitivity of methylammonium lead tribromide perovskite single crystals to environmental gases
One of the limiting factors to high device performance in photovoltaics is the presence of surface traps. Hence, the understanding and control of carrier recombination at the surface of organic-inorganic hybrid perovskite is critical for the design and optimization of devices with this material as t...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Association for the Advancement of Science
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5919775/ https://www.ncbi.nlm.nih.gov/pubmed/29713684 http://dx.doi.org/10.1126/sciadv.1600534 |
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author | Fang, Hong-Hua Adjokatse, Sampson Wei, Haotong Yang, Jie Blake, Graeme R. Huang, Jinsong Even, Jacky Loi, Maria Antonietta |
author_facet | Fang, Hong-Hua Adjokatse, Sampson Wei, Haotong Yang, Jie Blake, Graeme R. Huang, Jinsong Even, Jacky Loi, Maria Antonietta |
author_sort | Fang, Hong-Hua |
collection | PubMed |
description | One of the limiting factors to high device performance in photovoltaics is the presence of surface traps. Hence, the understanding and control of carrier recombination at the surface of organic-inorganic hybrid perovskite is critical for the design and optimization of devices with this material as the active layer. We demonstrate that the surface recombination rate (or surface trap state density) in methylammonium lead tribromide (MAPbBr(3)) single crystals can be fully and reversibly controlled by the physisorption of oxygen and water molecules, leading to a modulation of the photoluminescence intensity by over two orders of magnitude. We report an unusually low surface recombination velocity of 4 cm/s (corresponding to a surface trap state density of 10(8) cm(−2)) in this material, which is the lowest value ever reported for hybrid perovskites. In addition, a consistent modulation of the transport properties in single crystal devices is evidenced. Our findings highlight the importance of environmental conditions on the investigation and fabrication of high-quality, perovskite-based devices and offer a new potential application of these materials to detect oxygen and water vapor. |
format | Online Article Text |
id | pubmed-5919775 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | American Association for the Advancement of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-59197752018-04-30 Ultrahigh sensitivity of methylammonium lead tribromide perovskite single crystals to environmental gases Fang, Hong-Hua Adjokatse, Sampson Wei, Haotong Yang, Jie Blake, Graeme R. Huang, Jinsong Even, Jacky Loi, Maria Antonietta Sci Adv Research Articles One of the limiting factors to high device performance in photovoltaics is the presence of surface traps. Hence, the understanding and control of carrier recombination at the surface of organic-inorganic hybrid perovskite is critical for the design and optimization of devices with this material as the active layer. We demonstrate that the surface recombination rate (or surface trap state density) in methylammonium lead tribromide (MAPbBr(3)) single crystals can be fully and reversibly controlled by the physisorption of oxygen and water molecules, leading to a modulation of the photoluminescence intensity by over two orders of magnitude. We report an unusually low surface recombination velocity of 4 cm/s (corresponding to a surface trap state density of 10(8) cm(−2)) in this material, which is the lowest value ever reported for hybrid perovskites. In addition, a consistent modulation of the transport properties in single crystal devices is evidenced. Our findings highlight the importance of environmental conditions on the investigation and fabrication of high-quality, perovskite-based devices and offer a new potential application of these materials to detect oxygen and water vapor. American Association for the Advancement of Science 2016-07-27 /pmc/articles/PMC5919775/ /pubmed/29713684 http://dx.doi.org/10.1126/sciadv.1600534 Text en Copyright © 2016, The Authors http://creativecommons.org/licenses/by-nc/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (http://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited. |
spellingShingle | Research Articles Fang, Hong-Hua Adjokatse, Sampson Wei, Haotong Yang, Jie Blake, Graeme R. Huang, Jinsong Even, Jacky Loi, Maria Antonietta Ultrahigh sensitivity of methylammonium lead tribromide perovskite single crystals to environmental gases |
title | Ultrahigh sensitivity of methylammonium lead tribromide perovskite single crystals to environmental gases |
title_full | Ultrahigh sensitivity of methylammonium lead tribromide perovskite single crystals to environmental gases |
title_fullStr | Ultrahigh sensitivity of methylammonium lead tribromide perovskite single crystals to environmental gases |
title_full_unstemmed | Ultrahigh sensitivity of methylammonium lead tribromide perovskite single crystals to environmental gases |
title_short | Ultrahigh sensitivity of methylammonium lead tribromide perovskite single crystals to environmental gases |
title_sort | ultrahigh sensitivity of methylammonium lead tribromide perovskite single crystals to environmental gases |
topic | Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5919775/ https://www.ncbi.nlm.nih.gov/pubmed/29713684 http://dx.doi.org/10.1126/sciadv.1600534 |
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