Journal Article oxygen reduction reaction Bragg resonators FeNC catalyst Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. Ruddlesden-Popper perovskites active site density active site utilization balanced response charge carriers compression‐free solid‐state batteries electrolyte–electrode interfaces energy density external field flexible tape batteries high‐entropy tape electrolytes hydrophobicity laminated zinc‐air battery large‐scale flexible perovskite solar modules lasers micropore confinement effect molecular encapsulation non‐uniform deposition organo-lead halide perovskites perovskite photovoltaic perovskite solar cells photoelectron spectroscopy photonic crystals ripening process