Cu2 Ge1 Se4

Cu2GeS4 is a quaternary semiconductor compound belonging to the diamond-like structure family, characterized by a direct bandgap and potential for optoelectronic and photovoltaic applications. This material is primarily investigated in research settings for infrared detectors, solar cells, and nonlinear optical devices, where its tunable electronic properties and relatively high absorption coefficient offer advantages over binary semiconductors like CdTe or CdSe. Although not yet widely commercialized, Cu2GeS4 and related chalcogenides represent a promising alternative semiconductor family for next-generation energy conversion and sensing applications, particularly where earth-abundant constituent elements and reduced toxicity compared to cadmium-based materials are design priorities.