journal article·2025-04

Restrictive Heterointerfacial Delamination in Flexible Perovskite Photovoltaics Using a Bifacial Linker

Xuejie Zhu, Yixuan Li, Qiao‐Zhi Li, Nan Wang, Shaoan Yang, Xingfa Gao, Lu Zhang, Peijun Wang, Zihui Liang, Jiaxi Li, Kai Wang, Shengzhong (Frank) Liu, Dong Yang

Advanced Materials· Volume 37· Issue 13
Publisher page

Abstract

Abstract Flexible perovskite solar cells offer significant potential for portable electronics due to their exceptional power density. However, the commercialization of these devices is hampered by challenges related to mechanical flexibility, primarily due to inadequate adhesion between the perovskite absorber layer and the flexible substrate. Herein, this delamination issue is addressed by employing a bifacial linker, potassium benzyl(trifluoro)borate (BnBF 3 K), to enhance adhesion at the SnO 2 /perovskite interface. This approach not only improves the mechanical stability of flexible perovskite devices but also reduces buried surface defects and optimizes energy level alignment. Consequently, a record efficiency of 21.82% (certified at 21.39%) is achieved for a flexible perovskite solar module with an area of 12.80 cm 2 and a high efficiency of 24.15% for a flexible perovskite solar cell. Furthermore, the flexible modules exhibit outstanding mechanical flexibility, retaining 96.56% of their initial efficiency after 6000 bending cycles, demonstrating their suitability for various practical applications.
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Research context

OpenAlex topics: Perovskite Materials and Applications · Conducting polymers and applications · Organic Electronics and Photovoltaics

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

Affiliations

Key Laboratory of Photoelectric Conversion and Utilization of Solar Energy Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Dalian 116023 P. R. China

College of Materials Science and Engineering Shenyang University of Chemical Technology Shenyang 110142 P. R. China

Laboratory of Theoretical and Computational Nanoscience National Center for Nanoscience and Technology of China Beijing 100190 P. R. China

Key Laboratory of Applied Surface and Colloid Chemistry School of Materials Science and Engineering Shaanxi Normal University Xi'an 710119 P. R. China

National Local Joint Laboratory for Advanced Textile Processing and Clean Production Wuhan Textile University Wuhan 430073 China

Huanjiang Laboratory Zhejiang University Hangzhou 310027 P. R. China

CNNP Optoelectronics Technology 2828 Canghai Road, Lingang Shanghai 201311 P. R. China

Funding

National Natural Science Foundation of China · Dalian National Laboratory for Clean Energy

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