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Proceedings Paper

Development of IMARAD CZT detectors with PIN contacts
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Paper Abstract

We present initial result from our evaluation of a PIN contacted pixelated detector using cadmium zinc telluride substrate produced by IMARAD Imaging Systems. The Horizontal Bridgman (HB) grown crystals from IMARAD have been shown to produce high resolution photopeaks but they are also seen to have large dark current. We seek to test whether the use of PIN contacts could reduce the dark current and thus improve the spectral response especially in the 10-100 keV energy range. We have fabricated PIN and MIN detector with a 4 X 4 array of pixels on 10 X 10 mm substrates. Measurements of the detectors' dark current, spectral response, and internal electric field are presented and compared to IMARAD's ohmic contact detector and PIN detectors made of High Pressure Bridgman material.

Paper Details

Date Published: 19 October 1999
PDF: 11 pages
Proc. SPIE 3768, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics, (19 October 1999); doi: 10.1117/12.366627
Show Author Affiliations
Tomohiko Narita, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Peter Forbes Bloser, Harvard-Smithsonian Ctr. for Astrophysics (Germany)
Jonathan E. Grindlay, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Jonathan A. Jenkins, Harvard-Smithsonian Ctr. for Astrophysics (United States)
H. Walter Yao, Sandia National Labs. (United States)


Published in SPIE Proceedings Vol. 3768:
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics
Ralph B. James; Richard C. Schirato, Editor(s)

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