Grain-Boundary Passivating Polymer

Halts phase separation

Locks halide migration via dual interactions, suppressing light-induced phase separation in wide-bandgap perovskites.

Xiao-Ying, He · Song, Bin · Wang, Kai · Li, Nan · Huang, Lei · Rui-Hao, Qin · Chen, Jing · Chen, Chun · Xia, Yu · Yavuz, Ilhan · Yan-Hui, Lou · Wang, Kui

Advanced Materials 2025

Advantages

Champion inverted perovskite photovoltaic device PCE 22.86% under AM 1.5G illumination

Indoor PCE 43.19% under 1000 lux

Projected T90 lifetime exceeding 10000 h under continuous indoor light cycling