CsYO2S

CsYO₂S is a rare-earth oxysulfide ceramic compound containing cesium, yttrium, oxygen, and sulfur. This is an experimental material primarily of research interest in photonic and materials science applications, where mixed-anion ceramic compounds are being explored for their potential to combine beneficial properties from both oxide and sulfide chemistries. Oxysulfides in this family are being investigated for applications requiring tunable optical properties, luminescence, or thermal stability in specialized environments where conventional single-anion ceramics (pure oxides or pure sulfides) have limitations.