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CsPbBr(3) Nanocrystal Induced Bilateral Interface Modification for Efficient Planar Perovskite Solar Cells
Organic‐inorganic halide perovskite solar cells (PSCs) have drawn tremendous attention owing to their remarkable photovoltaic performance and simple preparation process. However, conventional wet‐chemical synthesis methods inevitably create defects both in the bulk and at the interfaces of perovskit...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8564463/ https://www.ncbi.nlm.nih.gov/pubmed/34515409 http://dx.doi.org/10.1002/advs.202102648 |
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author | Zhang, Jianjun Wang, Linxi Jiang, Chenhui Cheng, Bei Chen, Tao Yu, Jiaguo |
author_facet | Zhang, Jianjun Wang, Linxi Jiang, Chenhui Cheng, Bei Chen, Tao Yu, Jiaguo |
author_sort | Zhang, Jianjun |
collection | PubMed |
description | Organic‐inorganic halide perovskite solar cells (PSCs) have drawn tremendous attention owing to their remarkable photovoltaic performance and simple preparation process. However, conventional wet‐chemical synthesis methods inevitably create defects both in the bulk and at the interfaces of perovskites, leading to recombination of charge carriers and reduced stability. Herein, a bilateral interface modification to perovskites by doping room‐temperature synthesized CsPbBr(3) nanocrystals (CN) is reported. The ultrafast transient absorption measurement reveals that CN effectively suppresses the defect at the SnO(2)/perovskite interface and boosts the interfacial electron transport. Meanwhile, the in situ Kelvin probe force microscopy and contact potential difference characterizations verify that the CN within the upper part of the perovskites enhances the built‐in electric field, facilitating oriented migration of the carriers within the perovskite. Combining the superiorities of CN modifiers on both sides, the bilaterally modified CH(3)NH(3)PbI(3)‐based planar PSCs exhibit optimal power conversion efficiency exceeding 20% and improved device stability. |
format | Online Article Text |
id | pubmed-8564463 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-85644632021-11-09 CsPbBr(3) Nanocrystal Induced Bilateral Interface Modification for Efficient Planar Perovskite Solar Cells Zhang, Jianjun Wang, Linxi Jiang, Chenhui Cheng, Bei Chen, Tao Yu, Jiaguo Adv Sci (Weinh) Research Articles Organic‐inorganic halide perovskite solar cells (PSCs) have drawn tremendous attention owing to their remarkable photovoltaic performance and simple preparation process. However, conventional wet‐chemical synthesis methods inevitably create defects both in the bulk and at the interfaces of perovskites, leading to recombination of charge carriers and reduced stability. Herein, a bilateral interface modification to perovskites by doping room‐temperature synthesized CsPbBr(3) nanocrystals (CN) is reported. The ultrafast transient absorption measurement reveals that CN effectively suppresses the defect at the SnO(2)/perovskite interface and boosts the interfacial electron transport. Meanwhile, the in situ Kelvin probe force microscopy and contact potential difference characterizations verify that the CN within the upper part of the perovskites enhances the built‐in electric field, facilitating oriented migration of the carriers within the perovskite. Combining the superiorities of CN modifiers on both sides, the bilaterally modified CH(3)NH(3)PbI(3)‐based planar PSCs exhibit optimal power conversion efficiency exceeding 20% and improved device stability. John Wiley and Sons Inc. 2021-09-13 /pmc/articles/PMC8564463/ /pubmed/34515409 http://dx.doi.org/10.1002/advs.202102648 Text en © 2021 The Authors. Advanced Science published by Wiley‐VCH GmbH https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Articles Zhang, Jianjun Wang, Linxi Jiang, Chenhui Cheng, Bei Chen, Tao Yu, Jiaguo CsPbBr(3) Nanocrystal Induced Bilateral Interface Modification for Efficient Planar Perovskite Solar Cells |
title | CsPbBr(3) Nanocrystal Induced Bilateral Interface Modification for Efficient Planar Perovskite Solar Cells |
title_full | CsPbBr(3) Nanocrystal Induced Bilateral Interface Modification for Efficient Planar Perovskite Solar Cells |
title_fullStr | CsPbBr(3) Nanocrystal Induced Bilateral Interface Modification for Efficient Planar Perovskite Solar Cells |
title_full_unstemmed | CsPbBr(3) Nanocrystal Induced Bilateral Interface Modification for Efficient Planar Perovskite Solar Cells |
title_short | CsPbBr(3) Nanocrystal Induced Bilateral Interface Modification for Efficient Planar Perovskite Solar Cells |
title_sort | cspbbr(3) nanocrystal induced bilateral interface modification for efficient planar perovskite solar cells |
topic | Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8564463/ https://www.ncbi.nlm.nih.gov/pubmed/34515409 http://dx.doi.org/10.1002/advs.202102648 |
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