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Effects of Contact Materials on the Thermally Stimulated Current Spectra of Mercuric Iodide

Published online by Cambridge University Press:  25 February 2011

X. J. Bao ,
T. E. Schlesinger ,
R. B. James ,
A. Y. Cheng ,
C. Ortale  and
L. Van Den Berg
X. J. Bao
Affiliation:
Carnegie Mellon University, Department of Electrical and Computer Engineering, Pittsburgh, PA 15213
T. E. Schlesinger
Affiliation:
Carnegie Mellon University, Department of Electrical and Computer Engineering, Pittsburgh, PA 15213
R. B. James
Affiliation:
Sandia National Laboratories, Advanced Materials Division, Livermore, CA 94450
A. Y. Cheng
Affiliation:
EG&G Energy Measurements, Inc., Goleta, CA 93116
C. Ortale
Affiliation:
EG&G Energy Measurements, Inc., Goleta, CA 93116
L. Van Den Berg
Affiliation:
EG&G Energy Measurements, Inc., Goleta, CA 93116
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Abstract

Mercuric iodide (HgI2) single crystals deposited with transparent indium-tin-oxide (ITO), and semitransparent gold and nickel contacts were investigated by thermally stimulated current spectroscopy (TSC). The differences in the TSC spectra from these samples indicate that the defect structure in HgI2 may be modified by the contact material. These defects act as carrier traps and have strong implications in the application of HgI2 nuclear detectors. A method of numerical analysis was developed to extract information such as carrier trap activation energy, capture cross-section, and trap concentration-lifetime product from the TSC measurements.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 242: Symposium G – Wide Band-Gap Semiconductors , 1992 , 767
Copyright
Copyright © Materials Research Society 1992

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References

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