Coplanar CdZnTe p-i-n, Gamma-Ray Detectors for Nuclear Spectroscopy

Award Information
Agency: Department of Energy
Branch: N/A
Contract: DE-FG02-96ER82282
Agency Tracking Number: 34595
Amount: $745,571.00
Phase: Phase II
Program: SBIR
Awards Year: 1997
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
One Patriots Park, Bedford, MA, 01730
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Dr. Rengarajan Sudharsana
 Staff Scientist
 (617) 275-6000
Business Contact
 Mr. Richard S. Gregorio
Title: Vice President
Phone: (617) 275-6000
Research Institution
40439 November 18, 1996 Spire Corporation Miniature detectors are used to monitor stored nuclear materials such as plutonium and uranium. This project will develop a new device design to improve the energy resolution of cadmium-zinc-telluride (CdZnTe) radiation detectors. The proposed design is to form a coplanar p-i-n grid on one face and a continuous ohmic contact on the other face of CdZnTe. The coplanar grid offers improved energy resolution due to efficient collection of electrons, and the p-i-n structure design offers low leakage current and allows operation at high electric bias voltage. Phase I will demonstrate the feasibility of the concept by designing, fabricating, and testing a coplanar p-i-n CdZnTe detector. Phase II will optimize the detector structure and build prototype, portable systems. Anticipated Results/Potential Commercial Applications as described by the awardee: Application for these detectors include portable detector systems for monitoring uranium and plutonium in nuclear facilities, as well as gamma spectroscopy and X-ray astronomy .

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

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