Cu0.2Ga1.8Se2.8

Cu0.2Ga1.8Se2.8 is a p-type semiconductor compound derived from the chalcopyrite family, specifically a copper-gallium selenide alloy with reduced copper content. This material is primarily studied for photovoltaic and optoelectronic applications, particularly as an absorber layer in thin-film solar cells and as a potential substitute for higher-cadmium alternatives in polycrystalline solar technologies. The reduced copper ratio relative to gallium and selenium composition influences bandgap tuning and carrier dynamics, making it of interest for research into efficiency improvements and materials sustainability in next-generation photovoltaic devices.