Investigation of electrical contacts for Cd1-xZnxTe nuclear radiation detectors

被引：45

作者：

Burger, A

Chen, H

Tong, J

Shi, D

George, MA

Chen, KT

Collins, WE

James, RB

Stahle, CM

Bartlett, LM

机构：

[1] SANDIA NATL LABS,ADV ELECT MFG TECHNOL DEPT,LIVERMORE,CA 94550

[2] NASA,GODDARD SPACE FLIGHT CTR,OSC,GREENBELT,MD 20771

[3] NASA,GODDARD SPACE FLIGHT CTR,NRC,GREENBELT,MD 20771

来源：

IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 1997年 / 44卷 / 03期

基金：

美国国家航空航天局;

关键词：

D O I：

10.1109/23.603780

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A comparative study of four different metal deposition methods on detector grade Cd1-xZnxTe crystal has been done using current-voltage (I-V) characterization and Ba-133 gamma spectroscopy. Electroless Au contact and thermal evaporated Au contact have been found to yield a smaller leakage current and a more linear/symmetric I-V curve than that of sputtered Pt and Au contact. An optimum detector performance can be achieved by combining the thermal evaporated Au deposition method with a chemical surface treatment consisting of 5%Br-MeOH followed by 2% Br-20% lactic acid in ethylene glycol. Low temperature photoluminescence spectra of Cd1-xZnxTe samples corresponding to these different metallization schemes are also presented and discussed.

引用

页码：934 / 938

页数：5

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