摘要
金刚石以其独特的性能成为辐射探测器的理想材料。采用HFCVD方法制备了高质量、(100)取向的CVD金刚石膜,在此基础上研制出X射线探测器。使用55Fe 5.9keV X射线研究了CVD金刚石膜探测器的光电流和电荷收集效率。结果表明,探测器在偏压加到100V还具有好的欧姆接触;电场为50kV.cm-1时的暗电流与光电流分别为16.3和16.8nA;电荷收集效率η为45.1%,对应的电荷收集距离δ(CCD)为9.0μm。
The inherent properties of diamond make it an ideal material for radiation detectors. In this work, （100）-textured CVD diamond film with better quality was obtained by using a hot filament chemical vapor deposition （HFC／rD） technique to fabricate as X-ray detectors. 5.9 keV X-rays were used to investigate the photocurrent and charge collection efficiency of the detector. For the CVD diamond detector, the electrical contact is a fine ohmic for bias voltage up to 100 V, and the darkcurrent of -16.3 nA and the photocurrent of -16.8 nA are obtained at an electrical field of 50 kV（cm^-1. The average charge collection efficiency of -45. 1% corresponding to the charge collection distance （CCD） value of 9.0 （m is achieved.
出处
《核电子学与探测技术》
CAS
CSCD
北大核心
2006年第5期669-672,共4页
Nuclear Electronics & Detection Technology
基金
国家自然科学基金(60277024)
上海市纳米专项(0452nm051)
上海应用材料研究与发展资助
上海市重点学科(T0101)资助
