Science (New York, N.Y.) · 2026
Prussian blue regulates ion dynamics in perovskite solar cells.
СтатьяНазвание и аннотация: Перевод в очереди
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Cao Fang, Ma Mengen, Zhou Junjie, Cheng Fangwen, Dai Zheng, Chen Linyuan, Hong Yuhao, Tian Di, Zhan Shaoqi, Chen Yu, An Pengfei, Li Xin, Lin Xinyu, Su Zhenhuang, Gao Xingyu, Yang Jianhao, Huang Xiaofeng, Yin Jun, Li Jing, Zhang Hua, Wei Xian-Kui, Qu Zhiguo, Liu Chong, Yi Chenyi, Mai Yaohua, Wu Binghui, Zheng Nanfeng
Аннотация
Perovskite photovoltaics are limited by structural instabilities initiated during crystallization and amplified under operation. We report that a lattice-matched Prussian blue scaffold directs heterogeneous nucleation to produce highly oriented, strain-relaxed films. Its redox-active Fe-C≡N-Fe network mediates the conversion of Pb0 and I0 defects, and its rigid open framework suppresses A-site cation redistribution and the resulting electronic inhomogeneity under bias. This strategy yielded champion power conversion efficiencies of 26.1% (n-i-p) and 26.9% (p-i-n; 26.2% certified), scaling to 23.4% in 6-centimeter-by-6-centimeter minimodules and a certified 22.9% in 30-centimeter-by-30-centimeter submodules. Submodules with initial power conversion efficiencies ranging from 20.2 to 21.0% showed robust durability under accelerated aging and no discernible decline relative to a silicon reference over 5 months of outdoor testing.