Micro-homogeneity of lateral energy landscapes governs the performance in perovskite solar cells

Pengju Shi, Bin Ding, Donger Jin, Muratcan Oner, Xu Zhang, Yuan Tian, Yahui Li, Ke Zhao, Zengyi Sun, Jiazhe Xu, Shaochen Zhang, Runchen Lai, Lingyu Xiao, Chenyue Wang, Caner Değer, Liuwen Tian, Jiahui Shen, Yuan Cheng, Ilhan Yavuz, Xiaohe Miao, Enzheng Shi, Deren Yang, Yong Ding (), Mohammad Khaja Nazeeruddin (), Rui Wang () and Jingjing Xue ()
Additional contact information
Pengju Shi: Zhejiang University
Bin Ding: Institute of Chemical Sciences and Engineering, EPFL VALAIS
Donger Jin: Zhejiang University
Muratcan Oner: Marmara University
Xu Zhang: Zhejiang University
Yuan Tian: Zhejiang University
Yahui Li: Zhejiang University
Ke Zhao: Zhejiang University
Zengyi Sun: Zhejiang University
Jiazhe Xu: Zhejiang University
Shaochen Zhang: Zhejiang University
Runchen Lai: Westlake University
Lingyu Xiao: Westlake University
Chenyue Wang: Chinese Academy of Sciences
Caner Değer: Marmara University
Liuwen Tian: Zhejiang University
Jiahui Shen: Zhejiang University
Yuan Cheng: Westlake University
Ilhan Yavuz: Marmara University
Xiaohe Miao: Westlake University
Enzheng Shi: Westlake University
Deren Yang: Zhejiang University
Yong Ding: Institute of Chemical Sciences and Engineering, EPFL VALAIS
Mohammad Khaja Nazeeruddin: Institute of Chemical Sciences and Engineering, EPFL VALAIS
Rui Wang: Westlake University
Jingjing Xue: Zhejiang University

Nature Communications, 2024, vol. 15, issue 1, 1-10

Abstract: Abstract Suppression of energy disorders in the vertical direction of a photovoltaic device, along which charge carriers are forced to travel, has been extensively studied to reduce unproductive charge recombination and thus achieve high-efficiency perovskite solar cells. In contrast, energy disorders in the lateral direction of the junction for large-area modules are largely overlooked. Herein, we show that the micro-inhomogeneity characteristics in the surface lateral energetics of formamidinium (FA)-based perovskite films also significantly influence the device performance, particularly with accounting for the stability and scale-up aspects of the devices. By using organic amidinium passivators, instead of the most commonly used organic ammonium ones, the micro-inhomogeneity in the lateral energy landscapes can be suppressed, greatly improving device stability and efficiency of FA-based single-junction perovskite solar cells.

Date: 2024
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DOI: 10.1038/s41467-024-53953-4

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