Phase equilibria and photoinduced changes in systems Ag2S-In2S3-Si(Ge)S(Se)2

Abstract

The nature of the equilibria in the Ag2S-In2S3-Si(Ge)S2 systems was established and the polythermal cross sections were studied to allow us to select the optimal growth conditions for single crystals of the tetrara Ag2In2SiS6 and Ag2In2GeS6 single crystals. A study was made of the spectral distribution of the absorption coefficient and its photoinduced changes. The possibility of using the studied compounds as materials with controlled properties is shown. Key words: polythermal cross sections, quasipotrium system, disordered systems, photoinduced absorption.