PERFORMANCE-LIMITING DEFECTS IN CDZNTE DETECTORS.

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We studied the effects of small, <20 {micro}m, Te inclusions on the energy resolution of CdZnTe gamma-ray detectors using a highly collimated X-ray beam and gamma-rays, and modeled them via a simplified geometrical approach. Previous reports demonstrated that Te inclusions of about a few microns in diameter degraded the charge-transport properties and uniformity of CdZnTe detectors. The goal of this work was to understand the extent to which randomly distributed Te-rich inclusions affect the energy resolution of CZT detectors, and to define new steps to overcome their deleterious effects. We used a phenomenological model, which depends on several adjustable parameters, ... continued below

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7 pages

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BOLOTNIKOV, A.E.; CAMARDA, G.S.; CUI, Y.; KOHMAN, K.T.; LI, L.; SALOMON, M.B. et al. October 29, 2006.

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We studied the effects of small, <20 {micro}m, Te inclusions on the energy resolution of CdZnTe gamma-ray detectors using a highly collimated X-ray beam and gamma-rays, and modeled them via a simplified geometrical approach. Previous reports demonstrated that Te inclusions of about a few microns in diameter degraded the charge-transport properties and uniformity of CdZnTe detectors. The goal of this work was to understand the extent to which randomly distributed Te-rich inclusions affect the energy resolution of CZT detectors, and to define new steps to overcome their deleterious effects. We used a phenomenological model, which depends on several adjustable parameters, to reproduce the experimentally measured effects of inclusions on energy resolution. We also were able to hound the materials-related problem and predict the enhancement in performance expected by reducing the size and number of Te inclusions within the crystals.

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7 pages

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  • IEEE NUCLEAR SCIENCE SYMPOSIUM; SAN DIEGO, CA; 20061029 through 20061104

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  • Report No.: BNL--77188-2006-CP
  • Grant Number: DE-AC02-98CH10886
  • Office of Scientific & Technical Information Report Number: 896729
  • Archival Resource Key: ark:/67531/metadc887368

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  • October 29, 2006

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  • Sept. 22, 2016, 2:13 a.m.

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  • Nov. 17, 2016, 7:59 p.m.

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BOLOTNIKOV, A.E.; CAMARDA, G.S.; CUI, Y.; KOHMAN, K.T.; LI, L.; SALOMON, M.B. et al. PERFORMANCE-LIMITING DEFECTS IN CDZNTE DETECTORS., article, October 29, 2006; [Upton, New York]. (digital.library.unt.edu/ark:/67531/metadc887368/: accessed October 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.