Xiaohua Tang, Tianjiao Zhang, Weijie Chen, Haiyang Chen, Zhichao Zhang, Xining Chen, Hao Gu, Shuaiqing Kang, Chuanshuai Han, Tingting Xu, Jianlei Cao, Jialei Zheng, Xuemei Ou, Yaowen Li, Yongfang Li
Perovskite solar cells (pero-SCs) are highly unstable even under trace water. Although blanket encapsulation (BE) strategy applied in industry can effectively block moisture invasion, the commercial ultraviolet-curable adhesives (UVCAs) for BE still trigger power conversion efficiency deterioration, and the degradation mechanism remains unknown. For the first time, we revealed the functions of commercial UVCAs in BE-processed pero-SCs, where the small-sized monomer easily permeates to perovskite surface, forming an insulating barrier to block charge extraction, while the high-polarity moiety can destroy perovskite lattice...
March 22, 2024: Advanced Materials