K2InP2S7

K2InP2S7 is a mixed-metal sulfide ceramic compound containing potassium, indium, and phosphorus in a sulfide lattice structure. This material belongs to the family of quaternary chalcogenide ceramics, which are primarily investigated for optoelectronic and photonic applications due to their wide bandgap and potential nonlinear optical properties. While still largely in the research phase rather than widespread industrial production, materials in this compound class show promise for mid-infrared photonics, solid-state laser systems, and sensing applications where conventional oxides or single-element semiconductors fall short.