Abstract
The dependence of the compositional parameter x in Hg 1-x Cd x Te (MCT) upon the growth temperature and feed compositions has been analyzed by thermodynamic principles. The results indicate that x increases sharply from its low temperature values to unity once the growth temperature has reached a critical point, where the decomposition of HgTe becomes significant. Higher Hg/Cd ratios, as well as higher DETe concentrations in the feed can help to prevent HgTe decomposition until higher temperatures are reached and are thus more desirable growth conditions for MCT using the MOCVD method. © 1988.