Temperature dependence of optical constants for InSb films including molten phases

Abstract

We have measured the temperature dependence of optical constants of InSb films including molten phases. It has been found that the optical constants differ between the as-sputtered amorphous and the molten states. Also, the optical constants exhibit the large change associated with the crystalline-to-molten phase transition. In the crystalline states, the extinction coefficient increases as the temperature increases. This temperature dependence can be explained by the decrease of the band gap energy.