Internal electric field behavior of cadmium zinc telluride radiation detectors under high carrier injection

G. Yang; A. E. Bolotnikov; G. S. Camarda; Y. Cui; A. Hossain; K. H. Kim; R. Gul; R. B. James

doi:10.1007/s11664-011-1656-3

Internal electric field behavior of cadmium zinc telluride radiation detectors under high carrier injection

G. Yang, A. E. Bolotnikov, G. S. Camarda, Y. Cui, A. Hossain, K. H. Kim, R. Gul, R. B. James

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

Abstract

The behavior of the internal electric field of nuclear-radiation detectors substantially affects detector performance. We investigated the distribution of the internal field in cadmium zinc telluride (CZT) detectors under high carrier injection. We noted the build-up of a space-charge region near the cathode that produces a built-in field opposing the applied field. Its presence entails the collapse of the electric field in the rest of the detector, other than the portion near the cathode. Such a space-charge region originates from serious hole trapping in CZT. The device's operating temperature greatly affects the width of the space-charge region. With increasing temperature from 5°C to 35°C, its width expanded from about one-sixth to one-half of the total depth of the detector.

Original language	English
Pages (from-to)	1689-1692
Number of pages	4
Journal	Journal of Electronic Materials
Volume	40
Issue number	8
DOIs	https://doi.org/10.1007/s11664-011-1656-3
Publication status	Published - 2011 Aug
Externally published	Yes

Keywords

CZT
Pockels effect
electric field
hole trapping
polarization

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering
Materials Chemistry

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10.1007/s11664-011-1656-3

Cite this

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title = "Internal electric field behavior of cadmium zinc telluride radiation detectors under high carrier injection",

abstract = "The behavior of the internal electric field of nuclear-radiation detectors substantially affects detector performance. We investigated the distribution of the internal field in cadmium zinc telluride (CZT) detectors under high carrier injection. We noted the build-up of a space-charge region near the cathode that produces a built-in field opposing the applied field. Its presence entails the collapse of the electric field in the rest of the detector, other than the portion near the cathode. Such a space-charge region originates from serious hole trapping in CZT. The device's operating temperature greatly affects the width of the space-charge region. With increasing temperature from 5°C to 35°C, its width expanded from about one-sixth to one-half of the total depth of the detector.",

keywords = "CZT, Pockels effect, electric field, hole trapping, polarization",

author = "G. Yang and Bolotnikov, {A. E.} and Camarda, {G. S.} and Y. Cui and A. Hossain and Kim, {K. H.} and R. Gul and James, {R. B.}",

note = "Funding Information: This work was supported by US Department of Energy, Office of Nonproliferation Research and Development, NA-22. The manuscript has been authored by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH1-886 with the US Department of Energy.",

year = "2011",

month = aug,

doi = "10.1007/s11664-011-1656-3",

language = "English",

volume = "40",

pages = "1689--1692",

journal = "Journal of Electronic Materials",

issn = "0361-5235",

publisher = "Springer New York",

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AU - Yang, G.

AU - Bolotnikov, A. E.

AU - Camarda, G. S.

AU - Cui, Y.

AU - Hossain, A.

AU - Kim, K. H.

AU - Gul, R.

AU - James, R. B.

N1 - Funding Information: This work was supported by US Department of Energy, Office of Nonproliferation Research and Development, NA-22. The manuscript has been authored by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH1-886 with the US Department of Energy.

PY - 2011/8

Y1 - 2011/8

N2 - The behavior of the internal electric field of nuclear-radiation detectors substantially affects detector performance. We investigated the distribution of the internal field in cadmium zinc telluride (CZT) detectors under high carrier injection. We noted the build-up of a space-charge region near the cathode that produces a built-in field opposing the applied field. Its presence entails the collapse of the electric field in the rest of the detector, other than the portion near the cathode. Such a space-charge region originates from serious hole trapping in CZT. The device's operating temperature greatly affects the width of the space-charge region. With increasing temperature from 5°C to 35°C, its width expanded from about one-sixth to one-half of the total depth of the detector.

AB - The behavior of the internal electric field of nuclear-radiation detectors substantially affects detector performance. We investigated the distribution of the internal field in cadmium zinc telluride (CZT) detectors under high carrier injection. We noted the build-up of a space-charge region near the cathode that produces a built-in field opposing the applied field. Its presence entails the collapse of the electric field in the rest of the detector, other than the portion near the cathode. Such a space-charge region originates from serious hole trapping in CZT. The device's operating temperature greatly affects the width of the space-charge region. With increasing temperature from 5°C to 35°C, its width expanded from about one-sixth to one-half of the total depth of the detector.

KW - CZT

KW - Pockels effect

KW - electric field

KW - hole trapping

KW - polarization

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DO - 10.1007/s11664-011-1656-3

M3 - Article

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SN - 0361-5235

VL - 40

SP - 1689

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JO - Journal of Electronic Materials

JF - Journal of Electronic Materials

IS - 8

ER -

Internal electric field behavior of cadmium zinc telluride radiation detectors under high carrier injection

Abstract

Keywords

ASJC Scopus subject areas

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