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1. (WO2014205360) METHOD OF GROWING GERMANIUM CRYSTALS

Pub. No.:    WO/2014/205360    International Application No.:    PCT/US2014/043431
Publication Date: Thu Dec 25 00:59:59 CET 2014 International Filing Date: Sat Jun 21 01:59:59 CEST 2014
IPC: C30B 9/00
Applicants: SOUTH DAKOTA BOARD OF REGENTS
Inventors: WANG, Guojian
MEI, Dongming
Title: METHOD OF GROWING GERMANIUM CRYSTALS
Abstract:
In accordance with the present invention, taught is a high purity germanium crystal growth method utilizing a quartz shield inside a steel furnace. The quartz shield is adapted for not only guiding the flow of an inert gas but also preventing the germanium melt from contamination by insulation materials, graphite crucible, induction coil and stainless steel chamber. A load cell provides automatic control of crystal diameter and helps to ensure exhaustion of the germanium melt. The method is both convenient and effective at producing high purity germanium crystals by relatively low skilled operators.