Pb0.65Se0.65Sn0.35Te0.35

This is a quaternary lead-tin chalcogenide semiconductor alloy combining lead selenide and lead telluride with tin substitution, belonging to the narrow-gap IV-VI semiconductor family. Such materials are primarily developed for infrared detection and thermal imaging applications where tunable bandgap and high carrier mobility are critical, particularly in the mid-to-long wavelength infrared (MWIR/LWIR) regions. The tin and selenium alloying modifies the bandgap and lattice parameters relative to binary PbTe or PbSe, making this composition relevant for specialized detector systems and thermoelectric applications where performance at elevated or cryogenic temperatures is required.