Optical and electrical properties of glassy Ga10Te90−xSbx alloys

Abstract The optical band gap and optical constant for Ga10Te90−xSbx (where x=5, 10, 20 and 30) thin films have been studied as a function of photon energy in the wave length region (720–1200 nm). It was found that the optical band gap and refractive index decrease on incorporation of antimony in Ga10Te90−x alloy. The dc conductivity of Ga10Te90−xSbx thin films is also reported for the temperature range 308–368 K. The temperature dependence of the conductivity is very low and increases on adding antimony in Ga10Te90−xSbx system.