Title :
Modified vertical bridgman growth of Cd1−xZnxTe detector grade crystal in a 4 inch EDG furnace
Author :
Datta, Amlan ; Jones, Kelly A. ; Swain, Santosh ; Lynn, Kelvin G.
Author_Institution :
Center for Mater. Res., Washington State Univ., Pullman, WA, USA
fDate :
Oct. 24 2009-Nov. 1 2009
Abstract :
Achieving a high yield of detector grade CdZnTe single crystals is one of the greatest challenges in CdZnTe crystal growth. Over 85, 3.5-4 inch long CdZnTe crystals were grown in a 43 zone modified low pressure Vertical Bridgman Electro-Dynamic Gradient (EDG) Freeze 3 in. Mellen Sunfire furnace. The diameter of the grown ingots has been increased using a new Electro-Dynamic Gradient (EDG) Freeze 4 in. Mellen Sunfire Platinum coil furnace to visualize the effects of increased ampoule diameter on the grain structure and spectroscopic properties of CdZnTe. The reproducibility of detector grade crystals using the 4 in. furnace is discussed and some properties of the fabricated detectors are presented.
Keywords :
position sensitive particle detectors; semiconductor counters; CdZnTe detector grade crystal; CdZnTe spectroscopic properties; EDG furnace; detector grade crystals; electrodynamic gradient freeze; electrodynamic gradient furnace; fabricated detectors; grain structure; modified vertical Bridgman growth; Coils; Crystalline materials; Crystals; Detectors; Furnaces; Platinum; Spectroscopy; Temperature; X-ray detection; Zinc;
Conference_Titel :
Nuclear Science Symposium Conference Record (NSS/MIC), 2009 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4244-3961-4
Electronic_ISBN :
1095-7863
DOI :
10.1109/NSSMIC.2009.5402202
