DataVXACS Applied Electronic MaterialsPaper
journal article·2022-12-27

Self-Powered Solar-Blind UV Detectors Based on O-Terminated Vertical Diamond Schottky Diode with Low Dark Current, High Detectivity, and High Signal-to-Noise Ratio

Benjian Liu, Kang Liu, Sen Zhang, Victor Grigorievich Ralchenko, Xiaohui Zhang, Jingjing Xue, Dongyue Wen, Pengfei Qiao, Jiwen Zhao, Bing Dai, Lei Yang, Jiecai Han, Jiaqi Zhu

ACS Applied Electronic Materials· Volume 4· Issue 12
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Source abstract

Abstract

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 mm2 and 0.74 mm2, respectively. Rectification ratios as high as 1.5 × 107 and 5.7 × 108 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 × 1012 Jones and 5.2 × 1013 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(Iph) versus log(Idark) graph was proposed, and the detector in this work showed an ultrahigh SNR of 2 × 105. A high linear dynamic range of 105.9 dB was achieved for the self-powered detector Mesh.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Nanowire Synthesis and Applications · Ga2O3 and related materials · ZnO doping and properties

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin, 150080, P. R. China

Prokhorov General Physics Institute of Russian Academy of Sciences, Moscow, 119991, Russia

HRG Institute (Zhongshan) of Unmanned Equipment & AI, Zhongshan, 528521, P. R. China

Key Laboratory of Micro-systems and Micro-structures Manufacturing Ministry of Education, Harbin Institute of Technology, Harbin, 150080, P. R. China

Funding

Ministry of Science and Technology of the People's Republic of China · China Postdoctoral Science Foundation · Central University Basic Research Fund of China · Natural Science Foundation of Heilongjiang Province · National Natural Science Foundation of China · Key Laboratory of Micro-Systems and Micro-Structures Manufacturing, Ministry of Education, Harbin Institute of Technology · Laboratory for Space Environment and Physical Sciences

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