Epitaxial layer CdHgTe stress influence on diffusion impurities during creation of photodetectors

Abstract

We have investigated changing of diffusion migration through thin heteroepitaxial layers of cadmium-mercury-telluride under stress influence, which have created by differences between thermal extension coefficients of layers and substrate. We have analyzed by numerical experiment cases homogeneous and exponential mechanical stress in 2 and 3 layers structure. It was studied the time evolution of diffusion concentration profiles of impurity through epitaxial layers under influence of different mechanical stresses.