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Resolving Mixed Intermediate Phases in Methylammonium-Free Sn–Pb Alloyed Perovskites for High-Performance Solar Cells
The complete elimination of methylammonium (MA) cations in Sn–Pb composites can extend their light and thermal stabilities. Unfortunately, MA-free Sn–Pb alloyed perovskite thin films suffer from wrinkled surfaces and poor crystallization, due to the coexistence of mixed intermediate phases. Here, we...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer Nature Singapore
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9381682/ https://www.ncbi.nlm.nih.gov/pubmed/35974239 http://dx.doi.org/10.1007/s40820-022-00918-1 |
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author | Zhang, Zhanfei Liang, Jianghu Wang, Jianli Zheng, Yiting Wu, Xueyun Tian, Congcong Sun, Anxin Chen, Zhenhua Chen, Chun-Chao |
author_facet | Zhang, Zhanfei Liang, Jianghu Wang, Jianli Zheng, Yiting Wu, Xueyun Tian, Congcong Sun, Anxin Chen, Zhenhua Chen, Chun-Chao |
author_sort | Zhang, Zhanfei |
collection | PubMed |
description | The complete elimination of methylammonium (MA) cations in Sn–Pb composites can extend their light and thermal stabilities. Unfortunately, MA-free Sn–Pb alloyed perovskite thin films suffer from wrinkled surfaces and poor crystallization, due to the coexistence of mixed intermediate phases. Here, we report an additive strategy for finely regulating the impurities in the intermediate phase of Cs(0.25)FA(0.75)Pb(0.6)Sn(0.4)I(3) and, thereby, obtaining high-performance solar cells. We introduced d-homoserine lactone hydrochloride (D-HLH) to form hydrogen bonds and strong Pb–O/Sn–O bonds with perovskite precursors, thereby weakening the incomplete complexation effect between polar aprotic solvents (e.g., DMSO) and organic (FAI) or inorganic (CsI, PbI(2), and SnI(2)) components, and balancing their nucleation processes. This treatment completely transformed mixed intermediate phases into pure preformed perovskite nuclei prior to thermal annealing. Besides, this D-HLH substantially inhibited the oxidation of Sn(2+) species. This strategy generated a record efficiency of 21.61%, with a V(oc) of 0.88 V for an MA-free Sn–Pb device, and an efficiency of 23.82% for its tandem device. The unencapsulated devices displayed impressive thermal stability at 85 °C for 300 h and much improved continuous operation stability at MPP for 120 h. [Image: see text] SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s40820-022-00918-1. |
format | Online Article Text |
id | pubmed-9381682 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Springer Nature Singapore |
record_format | MEDLINE/PubMed |
spelling | pubmed-93816822022-08-18 Resolving Mixed Intermediate Phases in Methylammonium-Free Sn–Pb Alloyed Perovskites for High-Performance Solar Cells Zhang, Zhanfei Liang, Jianghu Wang, Jianli Zheng, Yiting Wu, Xueyun Tian, Congcong Sun, Anxin Chen, Zhenhua Chen, Chun-Chao Nanomicro Lett Article The complete elimination of methylammonium (MA) cations in Sn–Pb composites can extend their light and thermal stabilities. Unfortunately, MA-free Sn–Pb alloyed perovskite thin films suffer from wrinkled surfaces and poor crystallization, due to the coexistence of mixed intermediate phases. Here, we report an additive strategy for finely regulating the impurities in the intermediate phase of Cs(0.25)FA(0.75)Pb(0.6)Sn(0.4)I(3) and, thereby, obtaining high-performance solar cells. We introduced d-homoserine lactone hydrochloride (D-HLH) to form hydrogen bonds and strong Pb–O/Sn–O bonds with perovskite precursors, thereby weakening the incomplete complexation effect between polar aprotic solvents (e.g., DMSO) and organic (FAI) or inorganic (CsI, PbI(2), and SnI(2)) components, and balancing their nucleation processes. This treatment completely transformed mixed intermediate phases into pure preformed perovskite nuclei prior to thermal annealing. Besides, this D-HLH substantially inhibited the oxidation of Sn(2+) species. This strategy generated a record efficiency of 21.61%, with a V(oc) of 0.88 V for an MA-free Sn–Pb device, and an efficiency of 23.82% for its tandem device. The unencapsulated devices displayed impressive thermal stability at 85 °C for 300 h and much improved continuous operation stability at MPP for 120 h. [Image: see text] SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s40820-022-00918-1. Springer Nature Singapore 2022-08-16 /pmc/articles/PMC9381682/ /pubmed/35974239 http://dx.doi.org/10.1007/s40820-022-00918-1 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Zhang, Zhanfei Liang, Jianghu Wang, Jianli Zheng, Yiting Wu, Xueyun Tian, Congcong Sun, Anxin Chen, Zhenhua Chen, Chun-Chao Resolving Mixed Intermediate Phases in Methylammonium-Free Sn–Pb Alloyed Perovskites for High-Performance Solar Cells |
title | Resolving Mixed Intermediate Phases in Methylammonium-Free Sn–Pb Alloyed Perovskites for High-Performance Solar Cells |
title_full | Resolving Mixed Intermediate Phases in Methylammonium-Free Sn–Pb Alloyed Perovskites for High-Performance Solar Cells |
title_fullStr | Resolving Mixed Intermediate Phases in Methylammonium-Free Sn–Pb Alloyed Perovskites for High-Performance Solar Cells |
title_full_unstemmed | Resolving Mixed Intermediate Phases in Methylammonium-Free Sn–Pb Alloyed Perovskites for High-Performance Solar Cells |
title_short | Resolving Mixed Intermediate Phases in Methylammonium-Free Sn–Pb Alloyed Perovskites for High-Performance Solar Cells |
title_sort | resolving mixed intermediate phases in methylammonium-free sn–pb alloyed perovskites for high-performance solar cells |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9381682/ https://www.ncbi.nlm.nih.gov/pubmed/35974239 http://dx.doi.org/10.1007/s40820-022-00918-1 |
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