Coplanar CdZnTe p-i-n, Gamma-Ray Detectors for Nuclear Spectroscopy
Small Business Information
One Patriots Park, Bedford, MA, 01730
Dr. Rengarajan Sudharsana
Mr. Richard S. Gregorio
Abstract40439 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 .
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