期刊
ACS APPLIED ELECTRONIC MATERIALS
卷 4, 期 12, 页码 5996-6003出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsaelm.2c01164
关键词
diamond; schottky diode; solar-blind detector; self-powered; detectivity
资金
- National Key R&D Program of China [2022YFE0110900]
- China Postdoctoral Science Foundation [2021M690815]
- Natural Science Foundation of Heilongjiang [YQ2021E018]
- Heilongjiang Postdoctoral Fund [LBH-Z20012]
- Key Laboratory of Micro-systems and Microstructures Manufacturing (Harbin Institute of Technology) , Ministry of Education [2020KM001]
- Key Program of National Natural Science Foundation of China [52032004]
- National Natural Science Foundation of China [52072087]
- Fundamental Research Funds for the Central Universities
- Laboratory for Space Environment and Physical Sciences
Self-powered solar-blind UV detectors fabricated using high-quality Ru/diamond Schottky diodes demonstrated excellent performance, including high photocurrents, low dark currents, high detectivities, and wide linear dynamic range.
Self-powered solar-blind UV detectors were fabricated using high-quality Ru/diamond Schottky diodes. Photocurrents of 1 nA and 1.3 nA were obtained for detector Semi and Mesh under the condition of zero bias and 220 nm UV light irradiation, while the dark currents of these two detectors were 0.53 pA and 0.007 pA at 0 V, respectively. Photosensitive areas of detector Semi and Mesh were 1 mm(2) and 0.74 mm(2), respectively. Rectification ratios as high as 1.5 X 10(7) and 5.7 X 10(8) at +/- 5 V for Semi and Mesh were obtained, showing good rectifying characteristics for the vertical Schottky diodes. Responsivities at 0 V of Semi and Mesh were 10.3 mA/W and 16.2 mA/W, respectively. High detectivities of 3.8 X 10(12) Jones and 5.2 x 10(13) Jones for detector Semi and Mesh indicate excellent self-powered detection performance. To make a comprehensive comparison of the performance of diamond solar-blind UV detectors, a log(I-ph) versus log(I-dark) graph was proposed, and the detector in this work showed an ultrahigh SNR of 2 x 10(5). A high linear dynamic range of 105.9 dB was achieved for the self-powered detector Mesh.
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