Performance of CdZnTe detectors passivated with energetic oxygen atoms

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Description

Noise caused by surface-leakage current can degrade the performance of CdZnTe spectrometers, particularly devices with closely spaced contacts such as coplanar grid detectors. In order to reduce surface leakage, the authors are treating CdZnTe detector surfaces with energetic, neutral oxygen atoms. Energetic oxygen atoms react with the surface to form a resistive oxide layer. Because the reaction is effective at room temperature, deleterious heating of the substrate is avoided. In most cases, leakage current and noise are shown to decrease significantly after treatment. The effect of the treatment on the performance of coplanar grid detectors is presented.

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14 p.

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Prettyman, T.H.; Hoffbauer, M.A. & Rennie, J. December 1, 1998.

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Description

Noise caused by surface-leakage current can degrade the performance of CdZnTe spectrometers, particularly devices with closely spaced contacts such as coplanar grid detectors. In order to reduce surface leakage, the authors are treating CdZnTe detector surfaces with energetic, neutral oxygen atoms. Energetic oxygen atoms react with the surface to form a resistive oxide layer. Because the reaction is effective at room temperature, deleterious heating of the substrate is avoided. In most cases, leakage current and noise are shown to decrease significantly after treatment. The effect of the treatment on the performance of coplanar grid detectors is presented.

Physical Description

14 p.

Notes

INIS; OSTI as DE99000760

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  • 9. symposium on radiation measurements and applications, Ann Arbor, MI (United States), 11-14 May 1998

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  • Other: DE99000760
  • Report No.: LA-UR--98-2008
  • Report No.: CONF-980545--
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 677166
  • Archival Resource Key: ark:/67531/metadc704183

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  • December 1, 1998

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • May 5, 2016, 7:35 p.m.

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Prettyman, T.H.; Hoffbauer, M.A. & Rennie, J. Performance of CdZnTe detectors passivated with energetic oxygen atoms, article, December 1, 1998; New Mexico. (digital.library.unt.edu/ark:/67531/metadc704183/: accessed August 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.