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- W4387007881 abstract "A self-powered graphene/silicon carbide (G/4H-SiC) ultraviolet photodetector of a p-i-n like-structure with high voltage response has been fabricated to detect and measure low intensity ultraviolet (UV) radiation. Bilayer graphene sheet grown by chemical vapor deposition (CVD) method was transferred on the top of an epilayer structure of n-/n+ 4H-SiC. In this structure, two Schottky contacts were formed: one at G/ n- 4H-SiC interface and the other at bulk-4H-SiC/Cr/Au interface. The photodetector's characteristic measurements revealed low dark current of ~ 0.58 nA and spectral voltage responsivity of ~ 0.75 V/W at 300 nm wavelength. Under low level UV illumination of 300 nm wavelength, the photodetector exhibited a leakage current and a photogenerated response voltage of 1.1 nA and 10 mV, respectively. The time-dependent photovoltage measurements displayed a rapid photovoltage response with rise and decay times of ~74 ns and ~ 580 ns, respectively. This novel device holds promise for applications requiring sensitive and self-powered UV detection." @default.
- W4387007881 created "2023-09-26" @default.
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- W4387007881 date "2023-12-01" @default.
- W4387007881 modified "2023-10-12" @default.
- W4387007881 title "High voltage response of graphene/4H-SiC UV photodetector with low level detection" @default.
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- W4387007881 doi "https://doi.org/10.1016/j.jallcom.2023.172288" @default.
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