Investigation into mutual thermal decomposition of dimethylcadmium and diethyltellurium in hydrogen

Thermal decomposition of dimethylcadmium (MC), diethyltellurium (ET) and their mixtures in flow-type reactor on the surface of cadmium telluride in the presence of hydrogen and in vacuum has been studied. The presence of hydrogen does not affect ET thermal decomposition whereas the ratio of MC thermal decomposition product concentrations in hydrogen and in vacuum is different. By investigation of isotope composition of volatile products of MC thermal decomposition in the presence of deuterium it has been ascertained that up to 30 % of molecules of methane formed contain one hydrogen atom captured from carrier gas. Mechanism of joint MC and ET thermal decomposition, suggesting formation of intermediate complexes in the adsorption layer, is presented. It is shown that dtermination of propane concentration in volatile products of the MC and ET mixture thermal decomposition can serve as a convenient method for cadmium telluride precipitation control