Cesium Copper Iodide

Cesium copper iodide is utilized as a high-efficiency blue-emitting phosphor and scintillator material in thin-film optoelectronic devices due to its large exciton binding energy and high photoluminescence quantum yield.

As a lead-free metal halide, Cs3Cu2I5 serves as a wide-bandgap p-type semiconductor for use in ultraviolet photodetectors and environmentally friendly electronic components.

This compound is used as a source material in vacuum evaporation processes to deposit thin films for the fabrication of deep-ultraviolet light-emitting diodes and radiation detection screens.