Zero‐Dimensional Cesium Copper Iodide: Synthesis and Applications in Ultraviolet and X‐Ray Detection and Imaging
Since the discovery of self‐trapped exciton (STE) emission in copper‐based halides in 2018, novel copper‐based metal halides have gained significant attention in optoelectronics due to their high absorption, tunable bandgap, and long carrier lifetime. Among them, Cs 3 Cu 2 I 5 stands out for its high light yiel...