Radiation detector properties of CdTe0.9Se0.1:Cl crystals grown under microgravity in a rotating magnetic field

被引：23
作者：
Fiederle, M
Eiche, C
Joerger, W
Salk, M
Senchenkov, AS
Egorov, AV
Ebling, DG
Benz, KW
机构：
[1] UNIV FREIBURG, INST KRISTALLOG, D-79104 FREIBURG, GERMANY
[2] SPLAV, CTR TECH, MOSCOW 107497, RUSSIA
来源：
JOURNAL OF CRYSTAL GROWTH | 1996年 / 166卷 / 1-4期
关键词：
D O I：
10.1016/0022-0248(96)00074-7
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
The influence of growth conditions on radiation detector performance was studied by examining Cd(Te,Se):Cl crystals. They were grown by the travelling heater method under microgravity conditions during the PHOTON 8 mission. An additional forced convection was produced by a rotating magnetic field (400 Hz) of 2 mT. The influence on crystal quality was analyzed by several characterization methods such as time dependent charge measurement, photo-induced current transient spectroscopy and admittance spectroscopy. The charge collection efficiency of detectors was increased from 10% without magnetic field up to 66% by the influence of the rotating magnetic field. The improved detector performance is explained by the increased resistivity and a reduced number of deep levels.
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收藏
页码：256 / 260
页数：5
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