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Surface modulation for highly efficient and stable perovskite solar cells
Defects formed by halide ion escape and wettability of the perovskite absorber are essential limiting factors in achieving high performance of perovskite solar cells (PSCs). Herein, a series of ionic organic modulators are designed to contain halide anions to prevent defect formation and improve the...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10517147/ https://www.ncbi.nlm.nih.gov/pubmed/37746342 http://dx.doi.org/10.1039/d3ra00809f |
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author | Bai, Dongliang Zheng, Dexu Yang, Shaoan Yu, Fengyang Zhu, Xuejie Peng, Lei Wang, Likun Liu, Jishuang Yang, Dong Liu, Shengzhong (Frank) |
author_facet | Bai, Dongliang Zheng, Dexu Yang, Shaoan Yu, Fengyang Zhu, Xuejie Peng, Lei Wang, Likun Liu, Jishuang Yang, Dong Liu, Shengzhong (Frank) |
author_sort | Bai, Dongliang |
collection | PubMed |
description | Defects formed by halide ion escape and wettability of the perovskite absorber are essential limiting factors in achieving high performance of perovskite solar cells (PSCs). Herein, a series of ionic organic modulators are designed to contain halide anions to prevent defect formation and improve the surface tension of the perovskite absorber. It was found that the surface modulator containing Br anions is the most effective one due to its capability in bonding with the undercoordinated Pb(2+) ions to reduce charge recombination. Moreover, this surface modulator effectively creates a suitable energy level between the perovskite and hole transport layer to promote carrier transfer. In addition, the surface modulator forms a chemisorbed capping layer on the perovskite surface to improve its hydrophobicity. As a result, the efficiency of PSCs based on surface modulators containing Br anion enhances to 23.32% from 21.08% of the control device. The efficiency of unencapsulated PSCs with a surface modulator retains 75.42% of its initial value under about 35% humidity stored in the air for 28 days, while the control device only maintained 44.49% of its initial efficiency. The excellent stability originates from the hydrophobic perovskite surface after capping the surface modulator. |
format | Online Article Text |
id | pubmed-10517147 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-105171472023-09-24 Surface modulation for highly efficient and stable perovskite solar cells Bai, Dongliang Zheng, Dexu Yang, Shaoan Yu, Fengyang Zhu, Xuejie Peng, Lei Wang, Likun Liu, Jishuang Yang, Dong Liu, Shengzhong (Frank) RSC Adv Chemistry Defects formed by halide ion escape and wettability of the perovskite absorber are essential limiting factors in achieving high performance of perovskite solar cells (PSCs). Herein, a series of ionic organic modulators are designed to contain halide anions to prevent defect formation and improve the surface tension of the perovskite absorber. It was found that the surface modulator containing Br anions is the most effective one due to its capability in bonding with the undercoordinated Pb(2+) ions to reduce charge recombination. Moreover, this surface modulator effectively creates a suitable energy level between the perovskite and hole transport layer to promote carrier transfer. In addition, the surface modulator forms a chemisorbed capping layer on the perovskite surface to improve its hydrophobicity. As a result, the efficiency of PSCs based on surface modulators containing Br anion enhances to 23.32% from 21.08% of the control device. The efficiency of unencapsulated PSCs with a surface modulator retains 75.42% of its initial value under about 35% humidity stored in the air for 28 days, while the control device only maintained 44.49% of its initial efficiency. The excellent stability originates from the hydrophobic perovskite surface after capping the surface modulator. The Royal Society of Chemistry 2023-09-22 /pmc/articles/PMC10517147/ /pubmed/37746342 http://dx.doi.org/10.1039/d3ra00809f Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Bai, Dongliang Zheng, Dexu Yang, Shaoan Yu, Fengyang Zhu, Xuejie Peng, Lei Wang, Likun Liu, Jishuang Yang, Dong Liu, Shengzhong (Frank) Surface modulation for highly efficient and stable perovskite solar cells |
title | Surface modulation for highly efficient and stable perovskite solar cells |
title_full | Surface modulation for highly efficient and stable perovskite solar cells |
title_fullStr | Surface modulation for highly efficient and stable perovskite solar cells |
title_full_unstemmed | Surface modulation for highly efficient and stable perovskite solar cells |
title_short | Surface modulation for highly efficient and stable perovskite solar cells |
title_sort | surface modulation for highly efficient and stable perovskite solar cells |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10517147/ https://www.ncbi.nlm.nih.gov/pubmed/37746342 http://dx.doi.org/10.1039/d3ra00809f |
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