Cs2Ga2Se5

Cs₂Ga₂Se₅ is a ternary semiconductor compound composed of cesium, gallium, and selenium, belonging to the family of chalcogenide semiconductors with layered crystal structures. This material is primarily of research interest for infrared optics, nonlinear optical applications, and wide-bandgap semiconductor devices, where its light-matter interaction properties make it potentially valuable for detecting and manipulating infrared radiation. While not yet widely commercialized compared to mature semiconductors like GaAs or InP, it represents an important exploratory compound in the broader push for new optical materials for mid-infrared and terahertz photonics, particularly in applications requiring chemical or environmental stability advantages over traditional alternatives.