Synergistic Solvent and Composition Engineering of Perovskites for Tandems on Industrial Silicon

Zhiliang Liu; Yang Tian; Jun Chen; Mengsha Cao; Zhibang Shen; Shaofei Yang; Ke Fan; Xi Chen; Jia Yao; Zhijun Xiong; Yu Chen; Jun Fang; Longbin Qiu; Zhong'an Li; Hong Zhang; Alex K.-Y. Jen; Kai Yao

doi:10.1002/anie.202424809

Synergistic Solvent and Composition Engineering of Perovskites for Tandems on Industrial Silicon

Zhiliang Liu, Yang Tian, Jun Chen, Mengsha Cao, Zhibang Shen, Shaofei Yang^*, Ke Fan, Xi Chen, Jia Yao, Zhijun Xiong, Yu Chen^*, Jun Fang, Longbin Qiu, Zhong'an Li, Hong Zhang, Alex K.-Y. Jen, Kai Yao^*

^*Corresponding author for this work

Department of Chemistry

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

1 Citation (Scopus)

Abstract

Wide-bandgap perovskites based on mixed formamidinium−cesium cation and iodide−bromide halide are promising materials in the top cells that are well-matched with crystalline silicon bottom cells to construct efficient tandem photovoltaics. Nevertheless, mixed cation−halide perovskite films with submicron film thickness suffer from poor crystallinity with inhomogeneous and undesirable phases, owing to the presence of multiple pathways of crystal nucleation and phase transition. Herein, we propose a synergistic solvent and composition engineering (SSCE) strategy to regulate the solvated phases and manipulate the transition pathways simultaneously. The resultant mixed cation−halide perovskite film shows optimizing crystallization and desired phase structure with suppressed nonradiative recombination and improved phase stability under aging stresses. Consequently, the SSCE strategy enables the tandem cells based on industrially ultrathin silicon wafers (120 µm) to achieve a certified stabilized power conversion efficiency of 31.0%. Those encapsulated devices maintain 90% of their initial performance after 1200 h continuous operation. © 2025 Wiley-VCH GmbH.

Original language	English
Article number	e202424809
Journal	Angewandte Chemie - International Edition
Volume	64
Issue number	23
Online published	7 Apr 2025
DOIs	https://doi.org/10.1002/anie.202424809
Publication status	Published - 2 Jun 2025

Funding

The authors gratefully acknowledge the financial support from National Natural Science Foundation of China (Grants 62274080) and the Natural Science Foundation of Jiangxi Province, China (20224ACB214003 and 20242BAB26084). K.Y. also thanks for the support from the Science and Technology Innovation Base Project of Jiangxi Province (20242BCC32113). The authors are grateful for the cooperation of the beamline scientists at Beijing Synchrotron Radiation Facility (BSRF\u20101W1A) beamline for providing the GIWAXS data obtained at 1W1A Diffuse X\u2010ray Scattering Station.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Research Keywords

Crystallization regulation
Mixed cation−halide perovskite
Perovskite/Silicon tandem devices
Phase stability

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10.1002/anie.202424809

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Liu, Z., Tian, Y., Chen, J., Cao, M., Shen, Z., Yang, S., Fan, K., Chen, X., Yao, J., Xiong, Z., Chen, Y., Fang, J., Qiu, L., Li, Z., Zhang, H., Jen, A. K.-Y., & Yao, K. (2025). Synergistic Solvent and Composition Engineering of Perovskites for Tandems on Industrial Silicon. Angewandte Chemie - International Edition, 64(23), Article e202424809. https://doi.org/10.1002/anie.202424809

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title = "Synergistic Solvent and Composition Engineering of Perovskites for Tandems on Industrial Silicon",

abstract = "Wide-bandgap perovskites based on mixed formamidinium−cesium cation and iodide−bromide halide are promising materials in the top cells that are well-matched with crystalline silicon bottom cells to construct efficient tandem photovoltaics. Nevertheless, mixed cation−halide perovskite films with submicron film thickness suffer from poor crystallinity with inhomogeneous and undesirable phases, owing to the presence of multiple pathways of crystal nucleation and phase transition. Herein, we propose a synergistic solvent and composition engineering (SSCE) strategy to regulate the solvated phases and manipulate the transition pathways simultaneously. The resultant mixed cation−halide perovskite film shows optimizing crystallization and desired phase structure with suppressed nonradiative recombination and improved phase stability under aging stresses. Consequently, the SSCE strategy enables the tandem cells based on industrially ultrathin silicon wafers (120 µm) to achieve a certified stabilized power conversion efficiency of 31.0%. Those encapsulated devices maintain 90% of their initial performance after 1200 h continuous operation. {\textcopyright} 2025 Wiley-VCH GmbH.",

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author = "Zhiliang Liu and Yang Tian and Jun Chen and Mengsha Cao and Zhibang Shen and Shaofei Yang and Ke Fan and Xi Chen and Jia Yao and Zhijun Xiong and Yu Chen and Jun Fang and Longbin Qiu and Zhong'an Li and Hong Zhang and Jen, {Alex K.-Y.} and Kai Yao",

year = "2025",

month = jun,

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doi = "10.1002/anie.202424809",

language = "English",

volume = "64",

journal = "Angewandte Chemie - International Edition",

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TY - JOUR

T1 - Synergistic Solvent and Composition Engineering of Perovskites for Tandems on Industrial Silicon

AU - Liu, Zhiliang

AU - Tian, Yang

AU - Chen, Jun

AU - Cao, Mengsha

AU - Shen, Zhibang

AU - Yang, Shaofei

AU - Fan, Ke

AU - Chen, Xi

AU - Yao, Jia

AU - Xiong, Zhijun

AU - Chen, Yu

AU - Fang, Jun

AU - Qiu, Longbin

AU - Li, Zhong'an

AU - Zhang, Hong

AU - Jen, Alex K.-Y.

AU - Yao, Kai

PY - 2025/6/2

Y1 - 2025/6/2

N2 - Wide-bandgap perovskites based on mixed formamidinium−cesium cation and iodide−bromide halide are promising materials in the top cells that are well-matched with crystalline silicon bottom cells to construct efficient tandem photovoltaics. Nevertheless, mixed cation−halide perovskite films with submicron film thickness suffer from poor crystallinity with inhomogeneous and undesirable phases, owing to the presence of multiple pathways of crystal nucleation and phase transition. Herein, we propose a synergistic solvent and composition engineering (SSCE) strategy to regulate the solvated phases and manipulate the transition pathways simultaneously. The resultant mixed cation−halide perovskite film shows optimizing crystallization and desired phase structure with suppressed nonradiative recombination and improved phase stability under aging stresses. Consequently, the SSCE strategy enables the tandem cells based on industrially ultrathin silicon wafers (120 µm) to achieve a certified stabilized power conversion efficiency of 31.0%. Those encapsulated devices maintain 90% of their initial performance after 1200 h continuous operation. © 2025 Wiley-VCH GmbH.

AB - Wide-bandgap perovskites based on mixed formamidinium−cesium cation and iodide−bromide halide are promising materials in the top cells that are well-matched with crystalline silicon bottom cells to construct efficient tandem photovoltaics. Nevertheless, mixed cation−halide perovskite films with submicron film thickness suffer from poor crystallinity with inhomogeneous and undesirable phases, owing to the presence of multiple pathways of crystal nucleation and phase transition. Herein, we propose a synergistic solvent and composition engineering (SSCE) strategy to regulate the solvated phases and manipulate the transition pathways simultaneously. The resultant mixed cation−halide perovskite film shows optimizing crystallization and desired phase structure with suppressed nonradiative recombination and improved phase stability under aging stresses. Consequently, the SSCE strategy enables the tandem cells based on industrially ultrathin silicon wafers (120 µm) to achieve a certified stabilized power conversion efficiency of 31.0%. Those encapsulated devices maintain 90% of their initial performance after 1200 h continuous operation. © 2025 Wiley-VCH GmbH.

KW - Crystallization regulation

KW - Mixed cation−halide perovskite

KW - Perovskite/Silicon tandem devices

KW - Phase stability

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U2 - 10.1002/anie.202424809

DO - 10.1002/anie.202424809

M3 - RGC 21 - Publication in refereed journal

SN - 1433-7851

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JO - Angewandte Chemie - International Edition

JF - Angewandte Chemie - International Edition

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ER -

Synergistic Solvent and Composition Engineering of Perovskites for Tandems on Industrial Silicon

Abstract

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UN SDGs

Research Keywords

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