Enhanced Piezoelectric Response in Hybrid Lead Halide Perovskite Thin Films via Interfacing with Ferroelectric PbZr${}_{0.2}$Ti${}_{0.8}$O${}_3$

Jingfeng Song, Zhiyong Xiao, Bo Chen +4

We report a more than 10-fold enhancement of the piezoelectric coefficient $d_{33}$ of polycrystalline CH${}_3$NH${}_3$PbI${}_3$ (MAPbI${}_3$) films when interfacing them with ferroelectri…