Abstract
We report a plasmonic self-powered UV detector based on triboelectric nanogenerators, for the first time. The proposed structure benefits from plasmon-assisted photoresponse in reduced graphene oxide/Ag nanoparticles heterostructure, serving as a high-sensitive photoconductive layer in the fabricated triboelectric nanogenerator. Ag nanoparticles enhance the contacting surface area of the triboelectric nanogenerator, and improve the output open circuit voltage by a factor of about five. The presented triboelectric nanogenerator operates as an active self-powered UV detector so that the open circuit voltage is modulated by the UV illumination. The open circuit voltage sensitivity ( $\Delta {V} _{\text {p-p}}/{V} _{\text {p-p}}$ ) is measured as about 50% in response to UV illumination, with illumination power density of $500~\mu \text{W}$ /cm2.
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