Dependence of Resistivites of Cadmium Telluride on Residual Gas Pressure in Ampoules during Preparation

Abstract
Resistivities of cadmium telluride (CdTe) grown by the Bridgman method varied largely with residual gas pressure in ampoules used for preparation. Spectroscopy of residual gas in the ampoules and measurements of photoluminescences and infrared absorptions for grown CdTe crystals revealed that the resistivity increased as the concentration of oxygen incorporated from the atmosphere into CdTe during preparation decreased.