کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9699779 | 1461938 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of microstructure of films on CVD diamond X-ray detectors
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Although the unique properties of chemical vapor deposition (CVD) diamond films have made it a candidate material for radiation detectors, the polycrystalline nature of the films has severely limited the development of CVD diamond detectors. In this work, three CVD diamond films with different microstructure were grown by using a hot-filament chemical vapor deposition (HFCVD) technique and were fabricated as CVD diamond detectors. The electric contact is good ohmic for bias voltage up to 150Â V. 5.9Â keV 55Fe X-ray was used to measure the photocurrent and the pulse height distribution (PHD). For the detector based on the best quality film, the dark-current of 16.0Â nA and the net photocurrent of 15.9Â nA are obtained at an electric field of 50Â kVÂ cmâ1. The PHD peak is well separated from the noise pedestal, indicating a high counting efficiency and a low detection limit.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators A: Physical - Volume 120, Issue 2, 17 May 2005, Pages 349-353
Journal: Sensors and Actuators A: Physical - Volume 120, Issue 2, 17 May 2005, Pages 349-353
نویسندگان
Minglong Zhang, Yiben Xia, Linjun Wang, Beibei Gu,