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In Situ Reconstruct...
In Situ Reconstruction of Hole-Selective Perovskite Heterojunction with Graded Energetics Toward Highly Efficient and Stable Solar Cells
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- Jiang, Sheng (author)
- East China Normal Univ, Peoples R China
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- Xiong, Shaobing (author)
- East China Normal Univ, Peoples R China; Fudan Univ, Peoples R China
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- Wu, Hongbo (author)
- Donghua Univ, Peoples R China
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- Zhao, Dongyang (author)
- East China Normal Univ, Peoples R China
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- You, Xiaomeng (author)
- East China Normal Univ, Peoples R China
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- Xu, Yehui (author)
- East China Normal Univ, Peoples R China
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- Jia, Menghui (author)
- East China Normal Univ, Peoples R China
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- Bai, Wei (author)
- East China Normal Univ, Peoples R China
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- Ma, Zaifei (author)
- Donghua Univ, Peoples R China
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- Liu, Xianjie, 1971- (author)
- Linköpings universitet,Laboratoriet för organisk elektronik,Tekniska fakulteten
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- Yao, Yefeng (author)
- East China Normal Univ, Peoples R China
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- Sun, Zhenrong (author)
- East China Normal Univ, Peoples R China
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- Bao, Qinye (author)
- East China Normal Univ, Peoples R China; Fudan Univ, Peoples R China; Shanxi Univ, Peoples R China
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(creator_code:org_t)
- WILEY-V C H VERLAG GMBH, 2023
- 2023
- English.
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In: Advanced Energy Materials. - : WILEY-V C H VERLAG GMBH. - 1614-6832 .- 1614-6840. ; 13:27
- Related links:
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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) have demonstrated a high power conversion efficiency, however, the large energy loss due to non-radiative recombination is the main challenge for further performance enhancement. Here, a surface treatment strategy is developed by heat-induced decomposition of a thin interlayer 2,7-Naphthaleneditriflate (NAP) to in situ reconstruct perovskite energetics. It is verified that the reconstructed perovskite surface energetics match better with the upper hole transport layer compared to the intrinsic condition. Spontaneous generation of n/n(-) homojunctions between the perovskite film bulk and the surface region promotes hole extraction, enhancing built-in electric field, and thus significantly suppresses charge recombination at such perovskite hole-selective heterojunctions. Moreover, the surface decomposed fluorine-rich complexes passivate the defects and improve the crystallinity of the perovskite film. These advantages are confirmed by a remarkably improved efficiency from 20.52% for the control device to 23.37% for the treated one with excellent stability. The work provides a promising approach of in situ reconstructing perovskite surface and interface for the design of highly efficient and stable PSCs.
Subject headings
- NATURVETENSKAP -- Kemi -- Annan kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Other Chemistry Topics (hsv//eng)
Keyword
- charge transport; charge-selective heterojunction; efficiency; nonradiative recombination; perovskite solar cells
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Jiang, Sheng
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Xiong, Shaobing
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Wu, Hongbo
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Zhao, Dongyang
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You, Xiaomeng
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Xu, Yehui
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Jia, Menghui
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Bai, Wei
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Ma, Zaifei
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Liu, Xianjie, 19 ...
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Yao, Yefeng
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Sun, Zhenrong
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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 Chemical Science ...
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and Other Chemistry ...
- Articles in the publication
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Advanced Energy ...
- By the university
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Linköping University