Stable Halide Perovskite CsPbBr3 Nanocrystals Assisted by Covalent–Organic Frameworks for Electrochemiluminescence Analysis in an Aqueous Medium

Lead halide perovskites have garnered attention as promising electrochemiluminescence (ECL) emitters owing to their superior photophysical characteristics. However, their poor water stability severely restricts their application in aqueous media for ECL. In this study, inorganic perovskite CsPbBr