Journal
VACUUM
Volume 164, Issue -, Pages 58-61Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.vacuum.2019.03.003
Keywords
Zinc oxide; Photodetector; Nanowire; Photoelectrochemical
Funding
- Natural Science Foundation of Shandong Province [ZR2016FQ05]
- Project of Science and Technology Plan for University of Shandong Province [J16LJ05]
- National Natural Science Foundation of China [61775089, 61574071]
- Special Construction Project Fund for Shandong Province Taishan Scholars
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An enhanced photoelectrochemical (PEC)-type photodetector based on ZnO nanowire arrays (ZnO NAs) was constructed by bringing in a electrolyte embedded with liquid crystal (LC) in this paper. It was indicated that this UV photodetector exhibited visible-blind, high responsivity, and rapid response. The device based on the ZnO NAs showed a high responsivity of 0.05 A/W under 383 nm UV illumination at zero bias. The response time was observed to be rapid with a rise time constant of 0.15 s and a decay time constant of 0.05 s, respectively. The remarkably high photodetecting performance is due to the enhanced absorption of photons increased by LC-embedded electrolyte. This device can have a great future for application in high-performance and rapid-response UV photodetectors.
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