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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Laser Patterning a Chem-FET Like Device on a V2O5 Xerogel Film

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Author(s):
Huila, Manuel F. G. [1] ; Parussulo, Andre L. A. [1] ; Armas, Luis E. G. [2] ; Peres, Henrique E. M. [3] ; Seabra, Antonio C. [3] ; Ramirez-Fernandez, Francisco J. [3] ; Araki, Koiti [1] ; Toma, Henrique E. [1]
Total Authors: 8
Affiliation:
[1] Univ Sao Paulo, Inst Quim, BR-05508000 Sao Paulo - Brazil
[2] Univ Fed Pampa, BR-96413170 Bage - Brazil
[3] Univ Sao Paulo, Escola Politecn, BR-05508970 Sao Paulo - Brazil
Total Affiliations: 3
Document type: Journal article
Source: IEEE SENSORS JOURNAL; v. 18, n. 4, p. 1358-1363, FEB 15 2018.
Web of Science Citations: 1
Abstract

Vanadium pentoxide xerogel films deposited onto gold microelectrodes were micropatterned by thermally induced conversion into crystalline alpha-V2O5, using optical lithography written at the focus of a confocal Raman microscope. The laser scribing process improved the electric contact and promoted the n-doping of the film with VIV ions. In this way, a field effect transistor like device was constructed and successfully applied as humidity sensor, where the combined lithographic design and the application of a negative back gate field (V-G = -10.0 V) boosted the source-drain current by a hundred times, leading to a large gain in sensitivity. (AU)

FAPESP's process: 13/24725-4 - Supramolecular chemistry and nanotechnology
Grantee:Henrique Eisi Toma
Support Opportunities: Research Projects - Thematic Grants