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Synergistic Ultraviolet Conversion and Cross-Linking Strategy for Enhancing Flexible Perovskite Solar Cells
Silong Tu1, Jie Ning2, Hanwen Dong2
1Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen361005, China.
None:
The operational stability of flexible perovskite solar cells (fPSCs) under ultraviolet (UV) irradiation remains a critical challenge for their outdoor application. Herein, we develop an innovative cross-linking monomer, TFMU-TA, designed with a UV down-conversion function to address this issue. Poly(TFMU-TA) protects the perovskite film from UV-induced degradation while simultaneously enhancing its overall quality and stability. Consequently, the fPSCs achieve a power conversion efficiency of 23.16%. The flexible devices exhibited robust stability against bending, UV irradiation, and damp-heat aging, while also maintaining reliable output power in outdoor tests. This work provides a novel design strategy for multifunctional cross-linking materials, thereby facilitating the durable outdoor deployment of fPSCs.
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