Correlations between crystal defects and performance of CdZnTe detectors

A. E. Bolotnikov; S. Babalola; G. S. Camarda; Y. Cui; R. Gul; S. U. Egarievwe; P. M. Fochuk; M. Fuerstnau; J. Horace; A. Hossain; F. Jones; K. H. Kim; O. V. Kopach; B. McCall; L. Marchini; B. Raghothamachar; R. Taggart; G. Yang; L. Xu; R. B. James

doi:10.1109/TNS.2011.2160283

Correlations between crystal defects and performance of CdZnTe detectors

A. E. Bolotnikov^*
, S. Babalola
, G. S. Camarda
, Y. Cui
, R. Gul
, S. U. Egarievwe
, P. M. Fochuk
, M. Fuerstnau
, J. Horace
, A. Hossain
, F. Jones
, K. H. Kim
, O. V. Kopach
, B. McCall
, L. Marchini
, B. Raghothamachar
, R. Taggart
, G. Yang
, L. Xu
, R. B. James

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

56 Citations (Scopus)

Abstract

Poor crystallinity remains a major problem affecting the availability and cost of CdZnTe (CZT) detectors. Point defects are responsible for small gradual charge loss and correlated with the electron clouds' drift times, which allows electronic correction of the output signals to achieve high spectral-resolution even with large-volume CZT detectors. In contrast, extended defects causes significant charge losses, which typically are uncorrelated, and, thus, result in much greater fluctuations of the output signals that cannot be corrected. Although extended defects do not affect all the interaction events, their fraction rapidly increases with the crystal's thickness and volume. In this paper, we summarize our recent results from testing CZT material and detectors that emphasize the particular roles of two types of extended defects, and their contributions to the device's overall performance.

Original language	English
Article number	5960003
Pages (from-to)	1972-1980
Number of pages	9
Journal	IEEE Transactions on Nuclear Science
Volume	58
Issue number	4 PART 2
DOIs	https://doi.org/10.1109/TNS.2011.2160283
Publication status	Published - 2011 Aug

Bibliographical note

Funding Information:
Manuscript received December 21, 2010; revised March 14, 2011; accepted April 25, 2011. Date of publication July 22, 2011; date of current version August 17, 2011. This work was supported in part by the U.S. Department of Energy, Office of Nonproliferation Research and Development, NA-22 and Defense Threat Reduction Agency. The manuscript has been authored by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH1-886 with the U.S. Department of Energy.

Keywords

CdZnTe
crystal defects
radiation detectors

ASJC Scopus subject areas

Nuclear and High Energy Physics
Nuclear Energy and Engineering
Electrical and Electronic Engineering

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10.1109/TNS.2011.2160283

Cite this

Bolotnikov, A. E., Babalola, S., Camarda, G. S., Cui, Y., Gul, R., Egarievwe, S. U., Fochuk, P. M., Fuerstnau, M., Horace, J., Hossain, A., Jones, F., Kim, K. H., Kopach, O. V., McCall, B., Marchini, L., Raghothamachar, B., Taggart, R., Yang, G., Xu, L., & James, R. B. (2011). Correlations between crystal defects and performance of CdZnTe detectors. IEEE Transactions on Nuclear Science, 58(4 PART 2), 1972-1980. Article 5960003. https://doi.org/10.1109/TNS.2011.2160283

Bolotnikov, AE, Babalola, S, Camarda, GS, Cui, Y, Gul, R, Egarievwe, SU, Fochuk, PM, Fuerstnau, M, Horace, J, Hossain, A, Jones, F, Kim, KH, Kopach, OV, McCall, B, Marchini, L, Raghothamachar, B, Taggart, R, Yang, G, Xu, L & James, RB 2011, 'Correlations between crystal defects and performance of CdZnTe detectors', IEEE Transactions on Nuclear Science, vol. 58, no. 4 PART 2, 5960003, pp. 1972-1980. https://doi.org/10.1109/TNS.2011.2160283

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AU - Fochuk, P. M.

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AU - Xu, L.

AU - James, R. B.

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Correlations between crystal defects and performance of CdZnTe detectors

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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