Patent ID: 7316746
Filing Date: 2008-01-08
Classification: C30B,Y10S,Y10T

Abstract:
1. A method for growing Cadmium Telluride (CdTe) and Cadmium Zinc Telluride (CZT) crystal comprising: positioning a plurality of CZT or CdTe seed crystals in a growth zone of a reactor chamber divided by a porous baffle into the growth zone and a nutrient zone; positioning CZT or CdTe nutrient material in the nutrient zone; filling the reactor chamber with a solvent fluid; pressurizing the reactor such that the solvent fluid becomes supercritical; heating the reactor such that the nutrient zone is warmer than the growth zone; dissolving the nutrient material into the supercritical fluid; transporting the supercritical fluid with dissolved nutrient through the baffle and to the growth zone, and growing crystals from the seed crystals as the dissolved nutrients deposit on the crystals, wherein the growth zone temperature is at least 450° C. and the reactor pressure is at least 700 bar.