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Novel Method for Growth of Detector-Grade CZT Crystals

Award Information
Agency: Department of Energy
Branch: N/A
Contract: DE-FG02-11ER90076
Agency Tracking Number: 97530
Amount: $998,532.00
Phase: Phase II
Program: SBIR
Solicitation Topic Code: 51 b
Solicitation Number: DE-FOA-0000676
Timeline
Solicitation Year: 2012
Award Year: 2012
Award Start Date (Proposal Award Date): 2012-08-08
Award End Date (Contract End Date): 2014-08-07
Small Business Information
6 Huron Drive
Natick, MA 01760-1325
United States
DUNS: 807651260
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Shariar Motakef
 Dr.
 (508) 653-7100
 motakef@capesim.com
Business Contact
 Shariar Motakef
Title: Dr.
Phone: (508) 653-7100
Email: motakef@capesim.com
Research Institution
 Stub
Abstract

CdZnTe remains the material of choice for room temperature semiconductor detection of X- and -ray radiation, but the availability of high performance material is limited and the cost is very high. The goal of this project is to develop a new technology for production of large volumes of CZT single crystals with a high yield of detector-grade CZT crystals. In Phase I we demonstrated the viability of this technology and produced a CZT detector with a lifetime-mobility product value of 10-2cm2/V. The Phase II effort will focus on growth of large diameter crystals of high compositional uniformity, and on engineering of native point defects and second phase precipitates to produce high resistivity, high lifetime-mobility product, and high resolution detectors. The unique capabilities of the growth process under development will be leveraged to achieve these goals. The success of this program promises to result in higher availability and lower cost of large volume detectors needed for homeland security and medical applications.Commercial Applications and Other Benefits: Wide band gap semiconductors such as CdZnte are exceptionally suitable for detection of nuclear radiation. They have applications as inspection tools in homeland security, Positron Emission Tomography (PET) and scinti- mammography in medicine, and nuclear energy monitoring devices

* Information listed above is at the time of submission. *

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