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Field effect devices and sensors based on electrospun polymer assisted tin oxide nanoribbons.

Authors
  • Rojas, Richard
  • Meléndez, Anamaris
  • Ramos, Idalia
  • Santiago-Avilés, Jorge J
  • Pinto, Nicholas J
Type
Published Article
Journal
Journal of Nanoscience and Nanotechnology
Publisher
American Scientific Publishers
Publication Date
Apr 01, 2010
Volume
10
Issue
4
Pages
2811–2815
Identifiers
PMID: 20355506
Source
Medline
License
Unknown

Abstract

Electrospinning is presented as a facile method of preparing relatively long tin oxide (SnO2) nanofibers that are robust and stable in air. Upon heat treatment, the fibers collapse into a ribbon-like structure with surfaces that are not smooth, rather, are marked with several interconnected pathways. These nanoribbons were electrically characterized in a field effect transistor configuration in vacuum, with and without ultra violet (UV) light exposure. The resultant variable resistor device exhibits n-type behavior having an on/off ratio of approximately 6000. The devices show a direct response to UV with faster response times upon exposure to longer wavelength light. In the presence of UV, the device conductance and mobility increases, reaching a value approximately 2 cm2/-s for the 364 nm UV light source, comparable to amorphous Si.

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