Characteristics of anodic sulfide films for passivation of HgCdTe photodiodes

摘要

Abstract: sulfides were grown on HgCdTe using different electrolyte concentrations and current densities. These sulfide films were characterized by film thickness, refractive index, and composition depth profile. The results demonstrate a strong dependence of film properties on the extent of electrolyte polarization. By enhancing the polarization effect during anodization high quality sulfide/HgCdTe interfaces, and thus satisfactory electrical characteristics, are obtained. !6