The Structure and Crystallization of Amorphous Selenium Film

Abstract

The far-infrared transmission spectrum of vacuum evaporated amorphous film of selenium has been measured with samples made at different deposition rates. The spectrum shows that ordering of evaporated particles develops, if the deposition rate becomes smaller. The crystallization has been identified and analyzed by differential scanning calorimetry in the temperature range from 70°C to 160°C, and also by optical microscope measurement. The result indicates that the activation energy for the crystallization is closely related to the deposition rate.