期刊
SENSORS AND ACTUATORS A-PHYSICAL
卷 135, 期 2, 页码 529-533出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.sna.2006.10.001
关键词
ZnO; semiconducting II-VI materials; photodiodes
We report the fabrication of ZnO-based metal-insulator-semiconductor (MIS) and metal-semiconductor-metal (MSM) photodetectors. With 5 V applied bias, it was found that photocurrent to dark current contrast ratios of the ZnO MSM and MIS photodetectors were 2.9 x 10(2) and 3.2 x 10(4), respectively. It was also found that measured responsivities were 0.089 and 0.0083 A/W for the ZnO MSM and MIS photodetectors, respectively, when the incident light wavelength was 370 nm. Furthermore, it was found that ultraviolet (UV) to visible rejection ratios for the fabricated ZnO MSM and MIS photodetectors were 2.4 x 10(2) and 3.8 x 10(3), respectively. (c) 2006 Elsevier B.V. All rights reserved.
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