W18O49 Nanowires as Ultraviolet Photodetector
Open Access
- 27 November 2009
- journal article
- research article
- Published by Springer Nature in Nanoscale Research Letters
- Vol. 5 (2) , 416-419
- https://doi.org/10.1007/s11671-009-9499-z
Abstract
Photodetectors in a configuration of field effect transistor were fabricated based on individual W18O49 nanowires. Evaluation of electrical transport behavior indicates that the W18O49 nanowires are n-type semiconductors. The photodetectors show high sensitivity, stability and reversibility to ultraviolet (UV) light. A high photoconductive gain of 104 was obtained, and the photoconductivity is up to 60 nS upon exposure to 312 nm UV light with an intensity of 1.6 mW/cm2. Absorption of oxygen on the surface of W18O49 nanowires has a significant influence on the dark conductivity, and the ambient gas can remarkably change the conductivity of W18O49 nanowire. The results imply that W18O49 nanowires will be promising candidates for fabricating UV photodetectors.Keywords
This publication has 20 references indexed in Scilit:
- Nanostructured WO3 films using high temperature anodizationSensors and Actuators B: Chemical, 2009
- High-Temperature Anodized WO3 Nanoplatelet Films for Photosensitive DevicesLangmuir, 2009
- Enhancing the Photon- and Gas-Sensing Properties of a Single SnO2Nanowire Based Nanodevice by Nanoparticle Surface FunctionalizationThe Journal of Physical Chemistry C, 2008
- Cu‐Doped ZnO Nanowires for Efficient and Multispectral Photodetection ApplicationsAdvanced Materials, 2008
- Ultraviolet-visible emission from three-dimensional WO3−x nanowire networksApplied Physics Letters, 2007
- Strong photoluminescence of nanostructured crystalline tungsten oxide thin filmsApplied Physics Letters, 2005
- Enhancement of Photocatalytic and Electrochromic Properties of Electrochemically Fabricated Mesoporous WO3 Thin FilmsAdvanced Materials, 2003
- Wide-bandgap semiconductor ultraviolet photodetectorsSemiconductor Science and Technology, 2003
- Synthesis and Optical Properties of Colloidal Tungsten Oxide NanorodsJournal of the American Chemical Society, 2003
- “Inverse-Electron-Demand” Ligand Substitution in Palladium(0)−Olefin ComplexesJournal of the American Chemical Society, 2002