CAJ | 학술논문

利用~(60)Co γ源对碲镉汞光伏探测器进行了辐射损伤研究,通过电流-电压测试方法对器件的辐射效应进行了表征.利用数值微分方法得到器件较大反向偏压下的暗电流与缺陷中心密度的关系更为明显.通过研究辐射停止后器件的暗电流随着时间延长的变化,认为碲镉汞光伏探测器的γ辐射损伤存在暂态损伤和永久损伤.将这一现象进行实际应用,可以延长工作于辐射环境中的红外探测器的使用寿命.
이용~(60)Co γ원대제력홍광복탐측기진행료복사손상연구,통과전류-전압측시방법대기건적복사효응진행료표정.이용수치미분방법득도기건교대반향편압하적암전류여결함중심밀도적관계경위명현.통과연구복사정지후기건적암전류수착시간연장적변화,인위제력홍광복탐측기적γ복사손상존재잠태손상화영구손상.장저일현상진행실제응용,가이연장공작우복사배경중적홍외탐측기적사용수명.
The study of irradiation defects of HgCdTe photovoltaic detectors by ~(60)Co γ has been carried out. The current-voltage measurement method was used to evaluate the irradiation effects. It was obtained that the dark current of detectors at a larger reverse bias has a more obvious correlation with the density of defect centers using the numerical differentiate method. By studying the variation of dark current with the extension of time, it was thought that the transient and permanent irradiation defects existed in HgCdTe photodetectors after γ irradiation. This phenomenon may be applied to infrared detectors which operate in the irradiation condition to lengthen the lifetime of infrared detectors.