Scalable fabrication of wide-bandgap perovskites using green solvents for tandem solar cells

Chenyang Duan; Han Gao; Ke Xiao; Vishal Yeddu; Bo Wang; Renxing Lin; Hongfei Sun; Pu Wu; Yameen Ahmed; Anh Dinh Bui; Xuntian Zheng; Yurui Wang; Jin Wen; Yinke Wang; Wennan Ou; Chenshuaiyu Liu; Yuhong Zhang; Hieu Nguyen; Haowen Luo; Ludong Li; Ye Liu; Xin Luo; Makhsud I. Saidaminov; Hairen Tan

doi:10.1038/s41560-024-01672-x

Scalable fabrication of wide-bandgap perovskites using green solvents for tandem solar cells

Chenyang Duan, Han Gao, Ke Xiao^*, Vishal Yeddu, Bo Wang, Renxing Lin, Hongfei Sun, Pu Wu, Yameen Ahmed, Anh Dinh Bui, Xuntian Zheng, Yurui Wang, Jin Wen, Yinke Wang, Wennan Ou, Chenshuaiyu Liu, Yuhong Zhang, Hieu Nguyen, Haowen Luo, Ludong LiYe Liu, Xin Luo, Makhsud I. Saidaminov^*, Hairen Tan^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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Abstract

Commercializing perovskite-based tandems necessitates environmentally friendly solvents for scalable fabrication of efficient wide-bandgap (WBG) (1.65–1.80 eV) perovskites. However, the green solvents developed for formamidinium lead iodide-based ~1.50-eV-bandgap perovskites are unsuitable for WBG perovskites due to the low solubility of caesium and bromide salts, leading to reliance on toxic N,N-dimethylformamide solvent. Here we present a green solvent system comprising dimethyl sulfoxide and acetonitrile to effectively dissolve the named salts, with the addition of ethyl alcohol to prevent precursor degradation and to extend the solution processing window. Using this green solvent mixture, we achieve blade-coated WBG perovskite solar cells with power conversion efficiencies of 19.6% (1.78 eV) and 21.5% (1.68 eV). We then demonstrate 20.25-cm² all-perovskite tandem solar modules with a power conversion efficiency of 23.8%. Furthermore, we achieved WBG perovskites deposited in ambient air and narrow-bandgap perovskites fabricated using the same green solvents, which promotes the viability of environmentally friendly fabrication.

Original language	English
Journal	Nature Energy
DOIs	https://doi.org/10.1038/s41560-024-01672-x
Publication status	Accepted/In press - 2024

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Duan, C., Gao, H., Xiao, K., Yeddu, V., Wang, B., Lin, R., Sun, H., Wu, P., Ahmed, Y., Bui, A. D., Zheng, X., Wang, Y., Wen, J., Wang, Y., Ou, W., Liu, C., Zhang, Y., Nguyen, H., Luo, H., ... Tan, H. (Accepted/In press). Scalable fabrication of wide-bandgap perovskites using green solvents for tandem solar cells. Nature Energy. https://doi.org/10.1038/s41560-024-01672-x

@article{0aee07dd2c6441508016ba717e5b3672,

title = "Scalable fabrication of wide-bandgap perovskites using green solvents for tandem solar cells",

abstract = "Commercializing perovskite-based tandems necessitates environmentally friendly solvents for scalable fabrication of efficient wide-bandgap (WBG) (1.65–1.80 eV) perovskites. However, the green solvents developed for formamidinium lead iodide-based ~1.50-eV-bandgap perovskites are unsuitable for WBG perovskites due to the low solubility of caesium and bromide salts, leading to reliance on toxic N,N-dimethylformamide solvent. Here we present a green solvent system comprising dimethyl sulfoxide and acetonitrile to effectively dissolve the named salts, with the addition of ethyl alcohol to prevent precursor degradation and to extend the solution processing window. Using this green solvent mixture, we achieve blade-coated WBG perovskite solar cells with power conversion efficiencies of 19.6% (1.78 eV) and 21.5% (1.68 eV). We then demonstrate 20.25-cm2 all-perovskite tandem solar modules with a power conversion efficiency of 23.8%. Furthermore, we achieved WBG perovskites deposited in ambient air and narrow-bandgap perovskites fabricated using the same green solvents, which promotes the viability of environmentally friendly fabrication.",

author = "Chenyang Duan and Han Gao and Ke Xiao and Vishal Yeddu and Bo Wang and Renxing Lin and Hongfei Sun and Pu Wu and Yameen Ahmed and Bui, {Anh Dinh} and Xuntian Zheng and Yurui Wang and Jin Wen and Yinke Wang and Wennan Ou and Chenshuaiyu Liu and Yuhong Zhang and Hieu Nguyen and Haowen Luo and Ludong Li and Ye Liu and Xin Luo and Saidaminov, {Makhsud I.} and Hairen Tan",

note = "Publisher Copyright: {\textcopyright} The Author(s), under exclusive licence to Springer Nature Limited 2024.",

year = "2024",

doi = "10.1038/s41560-024-01672-x",

language = "English",

journal = "Nature Energy",

issn = "2058-7546",

publisher = "Springer Nature",

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Duan, C, Gao, H, Xiao, K, Yeddu, V, Wang, B, Lin, R, Sun, H, Wu, P, Ahmed, Y, Bui, AD, Zheng, X, Wang, Y, Wen, J, Wang, Y, Ou, W, Liu, C, Zhang, Y, Nguyen, H, Luo, H, Li, L, Liu, Y, Luo, X, Saidaminov, MI & Tan, H 2024, 'Scalable fabrication of wide-bandgap perovskites using green solvents for tandem solar cells', Nature Energy. https://doi.org/10.1038/s41560-024-01672-x

TY - JOUR

T1 - Scalable fabrication of wide-bandgap perovskites using green solvents for tandem solar cells

AU - Duan, Chenyang

AU - Gao, Han

AU - Xiao, Ke

AU - Yeddu, Vishal

AU - Wang, Bo

AU - Lin, Renxing

AU - Sun, Hongfei

AU - Wu, Pu

AU - Ahmed, Yameen

AU - Bui, Anh Dinh

AU - Zheng, Xuntian

AU - Wang, Yurui

AU - Wen, Jin

AU - Wang, Yinke

AU - Ou, Wennan

AU - Liu, Chenshuaiyu

AU - Zhang, Yuhong

AU - Nguyen, Hieu

AU - Luo, Haowen

AU - Li, Ludong

AU - Liu, Ye

AU - Luo, Xin

AU - Saidaminov, Makhsud I.

AU - Tan, Hairen

PY - 2024

Y1 - 2024

N2 - Commercializing perovskite-based tandems necessitates environmentally friendly solvents for scalable fabrication of efficient wide-bandgap (WBG) (1.65–1.80 eV) perovskites. However, the green solvents developed for formamidinium lead iodide-based ~1.50-eV-bandgap perovskites are unsuitable for WBG perovskites due to the low solubility of caesium and bromide salts, leading to reliance on toxic N,N-dimethylformamide solvent. Here we present a green solvent system comprising dimethyl sulfoxide and acetonitrile to effectively dissolve the named salts, with the addition of ethyl alcohol to prevent precursor degradation and to extend the solution processing window. Using this green solvent mixture, we achieve blade-coated WBG perovskite solar cells with power conversion efficiencies of 19.6% (1.78 eV) and 21.5% (1.68 eV). We then demonstrate 20.25-cm2 all-perovskite tandem solar modules with a power conversion efficiency of 23.8%. Furthermore, we achieved WBG perovskites deposited in ambient air and narrow-bandgap perovskites fabricated using the same green solvents, which promotes the viability of environmentally friendly fabrication.

AB - Commercializing perovskite-based tandems necessitates environmentally friendly solvents for scalable fabrication of efficient wide-bandgap (WBG) (1.65–1.80 eV) perovskites. However, the green solvents developed for formamidinium lead iodide-based ~1.50-eV-bandgap perovskites are unsuitable for WBG perovskites due to the low solubility of caesium and bromide salts, leading to reliance on toxic N,N-dimethylformamide solvent. Here we present a green solvent system comprising dimethyl sulfoxide and acetonitrile to effectively dissolve the named salts, with the addition of ethyl alcohol to prevent precursor degradation and to extend the solution processing window. Using this green solvent mixture, we achieve blade-coated WBG perovskite solar cells with power conversion efficiencies of 19.6% (1.78 eV) and 21.5% (1.68 eV). We then demonstrate 20.25-cm2 all-perovskite tandem solar modules with a power conversion efficiency of 23.8%. Furthermore, we achieved WBG perovskites deposited in ambient air and narrow-bandgap perovskites fabricated using the same green solvents, which promotes the viability of environmentally friendly fabrication.

UR - http://www.scopus.com/inward/record.url?scp=85209143907&partnerID=8YFLogxK

U2 - 10.1038/s41560-024-01672-x

DO - 10.1038/s41560-024-01672-x

M3 - Article

AN - SCOPUS:85209143907

SN - 2058-7546

JO - Nature Energy

JF - Nature Energy

ER -

Scalable fabrication of wide-bandgap perovskites using green solvents for tandem solar cells

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