Abstract

This article presents succinct report on a highly UV sensitive MSM photodetector based on sub 5 nm Sn nanoparticles titanium dioxide nanofibers Sn(NPs)-TiO2(NFs) on a glass substrate. Sn nanoparticles-titanium dioxide nanofibers Sn(NPs)-TiO2(NFs) synthesized using the sol-gel route, electrospinning techniques have been used for depositing the layers of (NFs) of diameter ∼245 nm of Sn(NPs)-TiO2(NFs). Sn(NPs)-TiO2(NFs) exhibit an enhanced sensitivity towards UV illumination as compared to only TiO2(NFs) with a large contrast ratio of ∼40.2, responsivity of ∼400 mA/W, detectivity of ∼9.05×1011Jones at −1 V. The proposed photodetector gives a rise time and fall time of ∼0.4 ms and ∼0.3 ms, respectively.

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