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surface passivation of cdznte detector by hydrogen peroxide solution etchingThe spectral resolution of room temperature nuclear radiation detectors such as CdZnTe is usually limited by the presence of conducting surface species that increase the surface leakage current. Studies have shown that the leakage current can be reduced by proper surface preparation. In this study, we try to optimize the performance of CdZnTe detector by etching the detector with hydrogen peroxide solution as function of concentration and etching time. The passivation effect that hydrogen peroxide introduces have been investigated by current-voltage (I-V) measurement on both parallel strips and metal-semiconductor-metal configurations. The improvements on the spectral response of Fe-55 and 241Am due to hydrogen peroxide treatment are presented and discussed.
Document ID
20000032244
Document Type
Conference Paper
Authors
Hayes, M.
(Fisk Univ. Nashville, TN United States)
Chen, H.
(Fisk Univ. Nashville, TN United States)
Chattopadhyay, K.
(Fisk Univ. Nashville, TN United States)
Burger, A.
(Fisk Univ. Nashville, TN United States)
James, R. B.
(Sandia National Labs. Livermore, CA United States)
Date Acquired
August 19, 2013
Publication Date
February 22, 1998
Publication Information
Publication: NASA University Research Centers Technical Advances in Aeronautics, Space Sciences and Technology, Earth Systems Sciences, Global Hydrology, and Education
Volume: 2 and 3
Subject Category
Inorganic, Organic and Physical Chemistry
Funding Number(s)
CONTRACT_GRANT: NCC8-133
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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