Volume 19, Issue 25 2207950
Research Article

High Performance Inverted RbCsFAPbI3 Perovskite Solar Cells Based on Interface Engineering and Defects Passivation

Tahir Imran

Tahir Imran

Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan, 430074 China

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Hasan Raza

Hasan Raza

Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan, 430074 China

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Liaquat Aziz

Liaquat Aziz

Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan, 430074 China

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Rui Chen

Corresponding Author

Rui Chen

Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan, 430074 China

E-mail: [email protected]; [email protected]; [email protected]

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Sanwan Liu

Sanwan Liu

Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan, 430074 China

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Zhaoyi Jiang

Zhaoyi Jiang

Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan, 430074 China

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You Gao

You Gao

Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan, 430074 China

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Jianan Wang

Jianan Wang

Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan, 430074 China

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Muhammad Younis

Muhammad Younis

Center of Joining and Electronic Packing, State Key Laboratory of Material Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074 China

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Sajid Rauf

Sajid Rauf

College of Electronics and Information Engineering, Shenzhen University, Shenzhen, Guangdong Province, 518000 China

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Zonghao Liu

Corresponding Author

Zonghao Liu

Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan, 430074 China

Optics Valley Laboratory Hubei, Wuhan, 430074 China

E-mail: [email protected]; [email protected]; [email protected]

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Wei Chen

Corresponding Author

Wei Chen

Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan, 430074 China

Optics Valley Laboratory Hubei, Wuhan, 430074 China

E-mail: [email protected]; [email protected]; [email protected]

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First published: 17 March 2023
Citations: 21

Abstract

Lead halide-based perovskites solar cells (PSCs) are intriguing candidates for photovoltaic technology due to their high efficiency, low cost, and simple fabrication processes. Currently, PSCs with efficiencies of >25% are mainly based on methylammonium (MA)-free and bromide (Br) free, formamide lead iodide (FAPbI3)-based perovskites, because MA is thermally unstable due to its volatile nature and Br incorporation will induce blue shift in the absorption spectrum. Therefore, MA-free, Br-free formamidine-based perovskites are drawing huge research attention in recent years. The hole transporting layer (HTL) is crucial in fabricating highly efficient and stable inverted p-i-n structured PSCs by enhancing charge extraction, lowering interfacial recombination, and altering band alignment, etc. Here, this work employs a NiOx/PTAA bi-layer HTL combined with GuHCl (guanidinium hydrochloride) additive engineering and PEAI (phenylethylammonium iodide) passivation strategy to optimize the charge carrier dynamics and tune defects chemistry in the MA-free, Br-free RbCsFAPbI3-based perovskite absorber, which boosts the device efficiency up to 22.78%. Additionally, the device retains 95% of its initial performance under continuous 1 sun equivalent LED light illumination at 45 °C for up to 500 h.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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