Electric Field Distribution of Cadmium Zinc Telluride (CZT)
Cadmium Zinc Telluride (CZT) is attracting increasing interest with its promise as a room-temperature nuclear-radiation-detector material. The distribution of the electric field in CZT detectors substantially affects their detection performance. At Brookhaven National Laboratory (BNL), we employed a synchrotron X-Ray mapping technique and a Pockels-effect measurement system to investigate this distribution in different detectors. Here, we report our latest experimental results with three detectors of different width/height ratios. A decrease in this ratio aggravates the non-uniform distribution of electric field, and focuses it on the central volume. Raising the bias voltage effectively can minimize such non-uniformity of the electric field distribution. The position of the maximum electric field is independent of the bias voltage; the difference between its maximum- and minimum-intensity of electric field increases with the applied bias voltage.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Organization:
- Doe - National Nuclear Security Administration
- DOE Contract Number:
- DE-AC02-98CH10886
- OSTI ID:
- 970514
- Report Number(s):
- BNL-90488-2009-CP; R&D Project: PO24; NN2001000; TRN: US1000795
- Resource Relation:
- Conference: SPIE Optics & Photonics; San Diego, CA; 20090802 through 10090806
- Country of Publication:
- United States
- Language:
- English
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