Charge loss between contacts of CdZnTe pixel detectors

Charge loss between contacts of CdZnTe pixel detectors
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DOI：
10.1016/s0168-9002(99)00388-5
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发表时间：
1999-08-11
期刊：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
影响因子：
1.4
通讯作者：
Eichelberger, AC
Eichelberger, AC
中科院分区：
物理与天体物理3区
文献类型：
--
作者：
Bolotnikov, AE;Cook, WR;Eichelberger, AC

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Cd1-xZnxTe （CZT）材料表面具有高电阻率，但不是理想的介电介质。即使很小的表面电导率也会影响电场分布，从而影响CZT像素探测器的电荷收集效率。本文描述了在单个CZT探测器上形成的几种接触结构的这种现象的研究。我们已经确定了可以忽略表面像素间电荷损失的最大接触间距。(C) 1999 Elsevier Science B.V.版权所有
The surface of Cd1-xZnxTe (CZT) material has high resistivity but is not a perfect dielectric. Even a small surface conductivity can affect the electric field distribution, and therefore, the charge collection efficiency of a CZT pixel detector. The paper describes studies of this phenomenon for several contact configurations made on a single CZT detector. We have determined the maximum inter-contact separation at which the surface inter-pixel charge loss can be neglected. (C) 1999 Elsevier Science B.V. All rights reserved.