Manufacture of cadmium mercury telluride

Abstract From the Canadian patent

A layer of CdxHg1-xTe is grown on the surface of a substrate by decomposing alkyls of cadmium and telluride in a mercury atmosphere. The substrate is placed in a vessel containing a mercury bath with the vessel and bath at a suitable pressure and a temperature below the alkyl decomposition temperature. Hydrogen is passed through bubblers separately containing alkyls of cadmium telluride and, if required, a dopant into the vessel. The substrate is independently heated above the temperature of the vessel so that the alkyls decompose on the substrate. The substrate may be CdTe a II-VI compound or mixed II-VI, alloy. The alkyls may be dimethyl cadmium diethyl cadmium, dipropyl cadmium, dimethyl …