Development of Large Size and Low Cost Cadmium Zinc Telluride Single Crystals for Improved Room Temperature Radiation Detectors used for National Security

Award Information
Agency:
Department of Energy
Branch
n/a
Amount:
$750,000.00
Award Year:
2001
Program:
SBIR
Phase:
Phase II
Contract:
DE-FG02-00ER83129
Agency Tracking Number:
60972S00-II
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Yinnel Tech, Inc.
3702 W. Sample Street, Suite 1109, South Bend, IN, 46619
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Longxia Li
President
(219) 234-3488
yinnel@skyenet.net
Business Contact:
Longxia Li
President
(219) 234-3488
yinnel@skyenet.net
Research Institution:
n/a
Abstract
60972 Cadmium Zinc Telluride (CdZnTe) is an important material for detectors used for national security. However, the production of CdZnTe, dominated by the High Pressure Bridgman technique for a decade, has suffered from low-yields (1-4%) and small device sizes (1-3 cm3). This project will develop an alternative Modified Vertical Bridgman, CdZnTe crystal growth technique with higher yield and larger-sizes, leading to higher volume detectors which are not available today. In Phase I, 50 cm3 large-size single CdZnTe crystals were produced with a high yield of over 50%. The crystals demonstrated an unprecedented mobility-lifetime product for electrons without compromising bulk resistivity. The pixellated and co-planar grid detectors performed with excellent energy resolutions. In Phase-II, a 3¿ diameter growth technique will be developed. Commercial Applications and Other Benefit as described by the awardee: These large-size single crystals, coupled with higher yields of CdZnTe single crystals should lower costs and further improve detector performances, especially for high-resolution room temperature radiation detectors with low-cost for national security and nuclear medicine

* information listed above is at the time of submission.

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