Self-powered visible-blind ultraviolet photodetectors based on SnO2 nanowire cotton synthesized using thermal chemical vapor deposition

We report a simple method for fabricating a SnO 2 nanowire (NW) cotton-based ultraviolet (UV) photodetector. SnO 2 NW cotton was synthesized by thermal chemical vapor deposition with SnO powder. Ag paste was coated onto the surface of the SnO 2 NW cotton to serve as the electrode. The performance of...

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Veröffentlicht in:Journal of the Korean Physical Society 2024, 85(12), , pp.1015-1021
Hauptverfasser: Park, Mijin, Kang, Hyon Chol
Format: Artikel
Sprache:eng
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Zusammenfassung:We report a simple method for fabricating a SnO 2 nanowire (NW) cotton-based ultraviolet (UV) photodetector. SnO 2 NW cotton was synthesized by thermal chemical vapor deposition with SnO powder. Ag paste was coated onto the surface of the SnO 2 NW cotton to serve as the electrode. The performance of the photodetector was evaluated upon UV light exposure at a wavelength of 254 nm, with a photo-to-dark-current ratio of 7.9 × 10 5 , photoresponsivity of 1.141 × 10 3 A/W, and specific detectivity of 9.0 × 10 15 Jones. The spectral photoresponsivity was also determined in the 200–600 nm wavelength range. The results showed a maximum responsivity at 270 nm and a cutoff edge wavelength of 360 nm, exhibiting the characteristics of a visible-blind UV photodetector. In addition, self-powered capability with a photocurrent of 2.3 nA was demonstrated at a nominal zero bias.
ISSN:0374-4884
1976-8524
DOI:10.1007/s40042-024-01214-4