کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7151052 | 1462221 | 2015 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Surface treatment to improve responsivity of MgZnO UV detectors
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موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی برق و الکترونیک
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
MgZnO films were grown on quartz substrates by radio frequency (RF) magnetron sputtering technique with a combinatorial target. The structural and optical properties of the sputtering films were characterized. Based on the MgZnO films, planar geometry metal-semiconductor-metal (MSM) structured ultraviolet (UV) detectors were fabricated. At 30Â V bias, a peak responsivity of 3.5Â mA/W was achieved at 285Â nm, and the visible rejection was about one order of magnitude with 25 pairs of electrodes. Afterward, in order to improve the responsivity, the surface of the MgZnO-based detector was sputtered ZnO within 20Â s. The responsivity was improved significantly from 3.5 to 15.8Â mA/W after surface treatment, and the corresponding visible rejection increased to three orders of magnitude. It revealed ZnO particles play a key role in enhancing the responsivity of detector, and the physical mechanism has been explained by a straightforward model.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid-State Electronics - Volume 111, September 2015, Pages 223-226
Journal: Solid-State Electronics - Volume 111, September 2015, Pages 223-226
نویسندگان
Yajun Zhao, Dayong Jiang, Rusheng Liu, Qian Duan, Chunguang Tian, Long Sun, Shang Gao, Jieming Qin, Qingcheng Liang, Jianxun Zhao,