Tin selenide is an inorganic compound with the chemical formula SnSe, which is a gray orthorhombic crystal with semiconductor.In the field of thermoelectricity, tin selenide is attracting attention for its high thermoelectric efficiency.In terms of environmental protection and energy efficiency, the application of tin selenide has broad prospects. It can be used in the manufacture of thermoelectric generators and thermoelectric coolers, helping to reduce energy consumption and environmental pollution.