Physical and Chemical Properties of Semiconductor Adsorbents of InP–CdBVI Systems

Comparative results of the synthesis, X-ray, Raman spectroscopy, and electron-microscopy studies, and determination of the acidity of the surface of solid solutions (pH iso ) of InP–CdS, InP–CdTe systems, differing in the second binary components (CdS, CdTe) and nevertheless including the common element (Cd) are presented. The formation of substitutional solid solutions with a cubic sphalerite structure in both systems is demonstrated. Their surfaces are of a slightly acidic nature at a greater degree of acidity of the solid-solution surfaces of the InP–CdTe system. With a variation in the system composition, the studied properties change both steadily (lattice parameters, interplanar distances) and drastically (theoretically calculated crystal density, average number of particles, pH iso ). At the same time, the system generality is found in correlations between the рH iso = f ( x CdS ), ρ r = f ( x CdS ) and рH iso = f ( x CdTe ), ρ r = f ( x CdTe ) dependences. The noted generality and difference in the systems are explained by the predominant, but different influence on the solid-solution properties of the second binary components (CdS, CdTe) and the “behavior” of the common element (Cd). Based on the correlations between the plotted diagrams “property–composition”, the possibility of the easier search for advanced materials suitable for the fabrication of sensors is proposed.