Anion‐Dependent Polarization and Piezoelectric Power Generation in Hybrid Halide MAPbX3 (X = I, Br, and Cl) Thin Films with Out‐of‐Plane Structural Adjustments (Adv. Sci. 4/2023)

Piezoelectricity Experimental evidence and origin of the anion‐dependent piezoelectricity in methylammonium lead halides MAPbX3 (X = I, Br, and Cl) thin films are proposed with excellent electromechanical power‐generating capability of 23.1 V and 1703 nA as a result of applying vertical tensile lattice strain. More details can be found in article number 2204462 by Yong Soo Cho and co‐workers.