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Direct Observation on p- to n-Type Transformation of Perovskite Surface Region during Defect Passivation Driving High Photovoltaic Efficiency
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- Xiong, Shaobing (author)
- East China Normal Univ, Peoples R China
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- Hou, Zhangyu (author)
- East China Normal Univ, Peoples R China
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- Zou, Shijie (author)
- Soochow Univ, Peoples R China
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- Lu, Xiaoshuang (author)
- East China Normal Univ, Peoples R China
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- Yang, Jianming (author)
- East China Normal Univ, Peoples R China
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- Hao, Tianyu (author)
- Shanghai Jiao Tong Univ, Peoples R China
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- Zhou, Zihao (author)
- East China Normal Univ, Peoples R China
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- Xu, Jianhua (author)
- East China Normal Univ, Peoples R China
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- Zeng, Yihan (author)
- East China Normal Univ, Peoples R China
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- Xiao, Wei (author)
- East China Normal Univ, Peoples R China
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- Dong, Wei (author)
- East China Normal Univ, Peoples R China
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- Li, Danqin (author)
- East China Normal Univ, Peoples R China
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- Wang, Xiang (author)
- East China Normal Univ, Peoples R China
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- Hu, Zhigao (author)
- East China Normal Univ, Peoples R China
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- Sun, Lin (author)
- East China Normal Univ, Peoples R China
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- Wu, Yuning (author)
- East China Normal Univ, Peoples R China
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- Liu, Xianjie (author)
- Linköpings universitet,Laboratoriet för organisk elektronik,Tekniska fakulteten
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- Ding, Liming (author)
- Natl Ctr Nanosci & Technol, Peoples R China
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- Sun, Zhenrong (author)
- East China Normal Univ, Peoples R China
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- Fahlman, Mats (author)
- Linköpings universitet,Laboratoriet för organisk elektronik,Tekniska fakulteten
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- Bao, Qinye (author)
- East China Normal Univ, Peoples R China; East China Normal Univ, Peoples R China; Shanxi Univ, Peoples R China
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(creator_code:org_t)
- CELL PRESS, 2021
- 2021
- English.
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In: Joule. - : CELL PRESS. - 2542-4351. ; 5:2, s. 467-480
- Related links:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Perovskite solar cells (PSCs) suffer from significant nonradiative recombination, limiting their power conversion efficiencies. Here, for the first time, we directly observe a complete transformation of perovskite MAPbI(3) surface region energetics from p- to n-type during defect passivation caused by natural additive capsaicin, attributed to the spontaneous formation of a p-n homojunction in perovskite active layer. We demonstrate that the p-n homojunction locates at similar to 100 nm below perovskite surface. The energetics transformation and defect passivation promote charge transport in bulk perovskite layer and at perovskite/PCBM interface, suppressing both defect-assisted recombination and interface carrier recombination. As a result, an efficiency of 21.88% and a fill factor of 83.81% with excellent device stability are achieved, both values are the highest records for polycrystalline MAPbI(3) based p-i-n PSCs reported to date. The proposed new concept of synergetic defect passivation and energetic modification via additive provides a huge potential for further improvement of PSC performance.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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Joule
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To the university's database
- By the author/editor
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Xiong, Shaobing
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Hou, Zhangyu
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Zou, Shijie
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Lu, Xiaoshuang
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Yang, Jianming
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Hao, Tianyu
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show more...
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Zhou, Zihao
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Xu, Jianhua
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Zeng, Yihan
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Xiao, Wei
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Dong, Wei
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Li, Danqin
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Wang, Xiang
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Hu, Zhigao
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Sun, Lin
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Wu, Yuning
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Liu, Xianjie
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Ding, Liming
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Sun, Zhenrong
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Fahlman, Mats
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Bao, Qinye
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
- Articles in the publication
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Joule
- By the university
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Linköping University