Thermomechanical study of non-crystalline chalcogenides in the As-S-Cd system

The work analyzes the thermomechanical behavior of glasses of the pseudobinary system (As2S3)100-x(CdS)x, consisting of variable ratios of the classical amorphous semiconducting compound As2S3 and CdS molecule, which is used in manufacturing of photoresistors sensitive to visible and near infrared light. The study encompassed the determination of the thermal coefficients of linear expansion in solid and visco-plastic phases, softening temperature, and the temperature of the beginning of deformation. The results show that the values of these parameters increase with increase in the share of CdS in the initial matrix, as well as the reduction of instructural strength of the correlation matrix of glass. The analytical forms of dependence of significant physical values αg, Tg, Tw, as a function of CdS content in the structure of glasses were fitted to the measured data. Based on the obtained coefficients of linear expansion, the Poissons coefficient was also calculated.