title: Field effect devices and sensors based on electrospun polymer assisted tin oxide nanoribbons.
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.
authors.affiliation: Department of Physics and Electronics, University of Puerto Rico-Humacao, Humacao, PR 00791, USA.
authors.forename: Richard
authors.initials: R
authors.lastname: Rojas
authors.forename: Anamaris
authors.initials: A
authors.lastname: Meléndez
authors.forename: Idalia
authors.initials: I
authors.lastname: Ramos
authors.forename: Jorge J
authors.initials: JJ
authors.lastname: Santiago-Avilés
authors.forename: Nicholas J
authors.initials: NJ
authors.lastname: Pinto