Effect of cadmium chloride on the photosensitivity of Cd1–xMgxTe (0 ⩽ x < 0.10) films grown in a quasi-closed system

Resumo

Films of Cd_1–xMg_xTe solid solutions have been grown by thermal evaporation of powders of CdTe-based MgTe–CdTe solid solutions in a quasi-closed system. The magnesium content of the films has been found to be lower than that of the source material used for film growth. It has been shown that the photocurrent amplitude in the Cd_1–xMg_xTe films as a function of incorporated CdCl₂ concentration has a maximum at a particular cadmium chloride concentration, which is due to the doping of the solid solutions with chloride ions. The cadmium chloride-activated Cd_1–xMg_xTe films are n-type.