| 摘要 |
1461146 Cadmium telluride AGENCE NATIONALE DE VALORISATION DE LA RECHERCHE 7 May 1974 [11 May 1973] 20056/74 Heading C1A A semi-insulating single crystal of cadmium telluride is prepared by a method in which the concentration of impurities is minimized and the proportion of dislocations, twinning and other crystal defects is reduced by carrying out the preparation in several steps, namely (a) synthesis from high purity (99À99%) cadmium and tellurium in stoichiometric proportions accompanied by crystallization at the melting point of the stoichiometric mixture, (b) purification of the cadmium telluride ingot thus obtained by not less than ten vertical zone-melting passes and (c) monocrystallization in tellurium as solvent at 452-900‹ C. |
