Advanced Functional Materials
Electron Transport Materials: π‐Extended Spiro Core‐Based Nonfullerene Electron‐Transporting Material for High‐Performance Perovskite Solar Cells
Zhao Hu, Guanqi Tang, Jingsheng Miao, Tianchen Fu, Tingting Li, Qidong Tai, Hong Meng, Feng Yan
In article number 2001073, Hong Meng, Feng Yan, and co‐workers design, synthesize, and successfully use a non‐fullerene electron transport material based on a new spiro derivative, SPS‐4F, in perovskite solar cells, leading to high efficiency as well as good stability of the devices. This work opens a new avenue for developing new spiro‐based electron transport materials and paves a way for realizing high‐performance devices at low costs.