Structural, electrical and optical study of thermally evaporated Ge8Sb2Te11 thin films

► Phase change materials GeTe-rich pseudobinary compound (Ge8Sb2Te11). ► Thermal evaporation of thin films from polycrystalline Ge8Sb2Te11 bulk. ► Temperature dependent structural, electrical and optical properties are presented. ► The optical contrast is more than 30%.