Stadnik V. Synthesis, structure and properties of mercury sulfide and mercury selenide films and solid solutions on their base

A reasonable choice of the reaction systems composition were carried out based on calculations of mercury chalcogenides low soluble forms formation without admixtures of by-products using four complexing agents for the synthesis of films HgS films and six complexing agents for the synthesis HgSe films. According to the results of the ion equilibrium analysis in the Hg2+–Lx–(NH2)2CS and Hg2+–Lx–Na2SeSO3 systems, the use of thiourea and sodium thiosulfate were proposed for the synthesis of HgS and HgSe films, respectively. Experimentally, the values of the activation energies of the HgS and HgSe films synthesis were determined, as well as quantum-chemical modeling of chemical bath deposition chemistry of the HgS films with (NH2)2CS and HgSe films with KI, KSCN and Na2S2O3 based on the proposed hypothesis about the possible formation of intermediate reactive complexes which have colloidal nature and were the structural links in the process of mercury chalcogenides films synthesis due to co-operative and fluctuation phenomena in the solution. The comparison of HgS and HgSe films deposition processes with different complexing agents were carried out based on the calculated energy diagrams of the simulated chemical bath deposition chemistry stages by PM6 method. The HgS and HgSe films, solid solutions HgSxSe1-x, CdxHg1-xSe, ternary compound Hg3I2Se2 and the structures ZnS/HgS, HgS/ZnS, ZnSe/HgS, HgSe/ZnS, HgS/CdS, HgSe/CdS were synthesized and characterized. In the HgS/ZnS and HgS/CdS structures was set the presence of HgS compound of cubic modification, which was the result of the forced orientation of the film material to the substrate material.