Charge loss between contacts of CdZnTe pixel detectors

Authors
Bolotnikov, AE Cook, WR Harrison, FA Wong, AS Schindler, SM Eichelberger, AC
Citation
Ae. Bolotnikov et al., Charge loss between contacts of CdZnTe pixel detectors, NUCL INST A, 432(2-3), 1999, pp. 326-331
Citations number
6
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
ISSN journal
01689002 → ACNP
Volume
432
Issue
2-3
Year of publication
1999
Pages
326 - 331
Database
ISI
SICI code
0168-9002(19990811)432:2-3<326:CLBCOC>2.0.ZU;2-A
Abstract
The surface of Cd1-xZnxTe (CZT) material has high resistivity but is not a perfect dielectric. Even a small surface conductivity can affect the electr ic field distribution, and therefore, the charge collection efficiency of a CZT pixel detector. The paper describes studies of this phenomenon for sev eral contact configurations made on a single CZT detector. We have determin ed the maximum inter-contact separation at which the surface inter-pixel ch arge loss can be neglected. (C) 1999 Elsevier Science B.V. All rights reser ved.