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Simulation of active-edge pixelated CdTe radiation detectors

Duarte, DD, Lipp, JD, Schneider, A, Seller, P, Veale, MC, Wilson, MD, Baker, MA and Sellin, PJ (2016) Simulation of active-edge pixelated CdTe radiation detectors NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 806. pp. 139-145.

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Abstract

The edge surfaces of single crystal CdTe play an important role in the electronic properties and performance of this material as an X-ray and γ-ray radiation detector. Edge effects have previously been reported to reduce the spectroscopic performance of the edge pixels in pixelated CdTe radiation detectors without guard bands. A novel Technology Computer Aided Design (TCAD) model based on experimental data has been developed to investigate these effects. The results presented in this paper show how localized low resistivity surfaces modify the internal electric field of CdTe creating potential wells. These result in a reduction of charge collection efficiency of the edge pixels, which compares well with experimental data.

Item Type: Article
Subjects : Surface Science: Engineering
Divisions : Faculty of Engineering and Physical Sciences > Mechanical Engineering Sciences
Authors :
AuthorsEmailORCID
Duarte, DDUNSPECIFIEDUNSPECIFIED
Lipp, JDUNSPECIFIEDUNSPECIFIED
Schneider, AUNSPECIFIEDUNSPECIFIED
Seller, PUNSPECIFIEDUNSPECIFIED
Veale, MCUNSPECIFIEDUNSPECIFIED
Wilson, MDUNSPECIFIEDUNSPECIFIED
Baker, MAUNSPECIFIEDUNSPECIFIED
Sellin, PJUNSPECIFIEDUNSPECIFIED
Date : 11 January 2016
Identification Number : 10.1016/j.nima.2015.09.087
Copyright Disclaimer : Copyright 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license
Uncontrolled Keywords : Science & Technology, Technology, Physical Sciences, Instruments & Instrumentation, Nuclear Science & Technology, Physics, Particles & Fields, Spectroscopy, Physics, Cadmium Telluride, Edge effect, Pixel detector, Semiconductor radiation detector, Surface characterization, TCAD simulation, SURFACE, PERFORMANCE
Related URLs :
Additional Information : Copyright 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license
Depositing User : Symplectic Elements
Date Deposited : 09 Mar 2016 08:41
Last Modified : 09 Mar 2016 08:41
URI: http://epubs.surrey.ac.uk/id/eprint/810071

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