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

fYear

2009

fDate

Oct. 24 2009-Nov. 1 2009

Firstpage

1771

Lastpage

1776

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record (NSS/MIC), 2009 IEEE

Conference_Location

Orlando, FL

ISSN

1095-7863

Print_ISBN

978-1-4244-3961-4

Electronic_ISBN

1095-7863

Type

conf

DOI

10.1109/NSSMIC.2009.5402202

Filename

5402202