GaSe2

GaSe₂ is a layered III-VI semiconductor ceramic compound combining gallium and selenium, belonging to the family of chalcogenide semiconductors. It is primarily investigated as a research material for optoelectronic and photonic applications, particularly in nonlinear optical devices, infrared detectors, and tunable photonic systems where its layered crystal structure enables unique optical and electronic properties. GaSe₂ remains largely in the development phase rather than widespread industrial production, but represents a promising platform for engineers working on next-generation optical modulators, frequency conversion devices, and integrated photonic circuits where tunable bandgap and strong light-matter interactions are advantageous.