journal article·2024-04-12

Design of Bridge Molecules for High-Efficiency FAPbI3-Based Perovskite Solar Cells

Chenxu Zhao, Qi Zhang, Yongao Lyu, Xinxin Lian, Kongxiang Wang, Fan Shen, Ming Luo, Huijing Liu, Huifang Han, Fengxian Xie, Xiaoliang Mo, Yingguo Yang, Jia Xu, Alex K-Y Jen, Hong Zhang, Jianxi Yao

ACS Energy Letters· Volume 9· Issue 4
Publisher page

Abstract

Manipulation of interfacial defects and carrier extraction or transport are crucial for improving the operational stability and photovoltaic performance of perovskite solar cells (PSCs). Here, we propose a technique utilizing bridge molecules to construct a carrier viaduct between perovskite bulk and hole-transporting layers. A molecular bridge configuration combining organic functional groups from each layer was used. The designed bridge molecules not only ensure homogeneous contact and promote carrier extraction/transport but also passivate various defects and redistribute the surface potential. The developed device showed an exceptional power conversion efficiency (PCE) of 25.49% with enhanced operational stability. The treated PSCs could retain over 94% of their initial PCEs after 1000 h of continuous operation under 1 sun illumination and over 95% of their initial PCEs after 500 h of aging at approximately 85 °C in dry air with a relative humidity of 20%. This work provides a simple yet effective approach for fabricating perovskite photovoltaics with outstanding performance and operational stability.
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Research context

OpenAlex topics: Perovskite Materials and Applications · Quantum Dots Synthesis And Properties · Chalcogenide Semiconductor Thin Films

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, Beijing Key Laboratory of Energy Safety and Clean Utilization, North China Electric Power University, Beijing 102206, P. R. China

State Key Laboratory of Photovoltaic Science and Technology, Shanghai Frontiers Science Research Base of Intelligent Optoelectronics and Perception, Institute of Optoelectronics, Department of Materials Science, Fudan University, Shanghai 200433, P. R. China

Institute for Electric Light Sources, School of Information Science and Technology, Fudan University, Shanghai 200433, P. R. China

School of Microelectronics, Fudan University, Shanghai 200433, P. R. China

Department of Materials Science and Engineering, Hong Kong Institute for Clean Energy, City University of Hong Kong, Hong Kong SAR 999077, P. R. China

Funding

Hebei Provincial Key Research Projects · Science and Technology Commission of Shanghai Municipality · National Natural Science Foundation of China · China Huaneng Group Co., Ltd

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