Detection and Electrical Properties of Cd1-xZnxTe Detectors at Elevated Temperatures.
Detection and Electrical Properties of Cd1-xZnxTe Detectors at Elevated Temperatures.
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DOI：
10.3233/xst-1996-6401
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发表时间：
1996-12
影响因子：
3
通讯作者：
S. Egarievwe;K. T. Chen;A. Burger;R. James;C. Lisse
中科院分区：
文献类型：
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作者：
S. Egarievwe;K. T. Chen;A. Burger;R. James;C. Lisse
我们研究了 Cd1-xZnxTe 探测器在 24-70°C 温度范围内的行为。检测器计数率稳定性和漏电流表示为电压、时间和温度的函数。观察到由于体效应和表面效应导致的检测器极化导致漏电流降低。在 70°C 下，133Ba 的 32 keV 光峰位置随时间稳定。在 60 V 偏压下运行 24 小时期间，峰位置变化仅在 3 keV 范围内，峰品质因数在 0.31 和 0.41 之间变化。净计数与总计数的比率也稳定，值在 0.56 至 0.59 之间变化。净计数与总计数的比率从 25°C 时的 0.78 降至 60°C 时的 0.71。结论是，Cd1-xZnxTe 是一种有前途的用于室温以上温度下伽马射线检测的材料。
We have studied the behavior of Cd1-xZnxTe detectors in the temperature range 24-70°C. The detector count rate stability and leakage currents are presented as a function of voltage, time, and temperature. Detector polarization due to bulk and surface effects leading to a decreased leakage current was observed. At 70°C, the position of the 32 keV photopeak of 133Ba was stable with time. The peak position varies within only 3 keV, and the peak quality factor varied between 0.31 and 0.41, for a 24 h period of operation at a 60 V bias. The net count to total count ratio was also stable, with values varying between 0.56 and 0.59. The net count to total count ratio decreased from 0.78 at 25°C to 0.71 at 60°C. The conclusion is that Cd1-xZnxTe is a promising material for gamma ray detection at temperatures above room temperature.