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Composition-Conditi...
Composition-Conditioning Agent for Doped Spiro-OMeTAD to Realize Highly Efficient and Stable Perovskite Solar Cells
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- Yang, Heyi (författare)
- Soochow Univ, Peoples R China
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- Shen, Yunxiu (författare)
- Soochow Univ, Peoples R China
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- Zhang, Rui (författare)
- Linköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten
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- Wu, Yeyong (författare)
- Soochow Univ, Peoples R China
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- Chen, Weijie (författare)
- Soochow Univ, Peoples R China
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- Yang, Fu (författare)
- Soochow Univ, Peoples R China
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- Cheng, Qinrong (författare)
- Soochow Univ, Peoples R China
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- Chen, Haiyang (författare)
- Soochow Univ, Peoples R China
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- Ou, Xuemei (författare)
- Soochow Univ, Peoples R China
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- Yang, Haidi (författare)
- Soochow Univ, Peoples R China
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- Gao, Feng, 1981- (författare)
- Linköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten
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- Li, Yaowen (författare)
- Soochow Univ, Peoples R China; Soochow Univ, Peoples R China; Soochow Univ, Peoples R China
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- Li, Yongfang (författare)
- Soochow Univ, Peoples R China; Soochow Univ, Peoples R China; Chinese Acad Sci, Peoples R China
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(creator_code:org_t)
- 2022-09-23
- 2022
- Engelska.
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Ingår i: Advanced Energy Materials. - : WILEY-V C H VERLAG GMBH. - 1614-6832 .- 1614-6840. ; 12:44
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The doped Spiro-OMeTAD hole transport layer (HTL) formed using the lithium bis(trifluoromethane) sulfonimide salt and 4-tert-butylpyridine with phenethylammonium iodide surface treatment on a perovskite film has continuously dominated the record power conversion efficiencies (PCEs) of perovskite solar cells (pero-SCs). However, unstable HTL compositions and iodide salts can cause severe device degradation. In this study, an HTL composition-conditioning agent (CCA), Spiro-BD-2OEG, is designed, which contains a Spiro-OMeTAD-like backbone, functional pyridine units, and oligo (ethylene glycol) chains. This finely designed CCA presents good miscibility with Spiro-OMeTAD and its dopants and acts as a conditioning agent through weak bond interactions. As a result, the CCA-regulated HTL shows a pinhole-free and smooth morphology with enhanced Spiro-OMeTAD ordering and improves dopant stability. In addition, the gradient-distributed CCA in the HTL can narrow the energy level offset with the valence band of the perovskite. The resultant pero-SCs exhibit an excellent PCE of 24.19% without any interface treatment and weak size dependence. A remarkable PCE of 22.63% is obtained even for a 1.004-cm(2) device. Importantly, the strategy shows good universality and significantly promotes the long-term stability of the pero-SCs based on the classical doped Spiro-OMeTAD.
Ämnesord
- NATURVETENSKAP -- Kemi -- Annan kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Other Chemistry Topics (hsv//eng)
Nyckelord
- doped Spiro-OMeTAD; interface treatment-free; perovskite solar cells; stability
Publikations- och innehållstyp
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- art (ämneskategori)
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Yang, Heyi
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Shen, Yunxiu
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Zhang, Rui
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Wu, Yeyong
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Chen, Weijie
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Yang, Fu
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visa fler...
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Cheng, Qinrong
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Chen, Haiyang
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Ou, Xuemei
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Yang, Haidi
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Gao, Feng, 1981-
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Li, Yaowen
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Li, Yongfang
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visa färre...
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