PRODUCTION OF CDTE SINGLE CRYSTAL

摘要

PURPOSE:To enhance the resistivity and high energy resolving power of a CdTe single crystal contg. chlorine by heat-treating the single crystal in special conditions. CONSTITUTION:Te is used as a solvent 5, a chlorine source such as CdCl2 is added so as to regulate the concn. of chlorine in the resulting crystal to 0.8-5wt. ppm and a CdTe single crystal 4 is grown and heat-treated by cooling at<=50 deg.C/hr rate in a temp. range of <=450 deg.C or an ampoule 3 contg. the CdTe single crystal 4 contg. 0.8-5wt.ppm chlorine grown with a crystal growth furnace 1 is moved to a heat treating furnace 2 and the single crystal 4 is heat-treated while stepwise reducing the temp. in a temp. range of <=450 deg.C.