| Full text | |
| 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 |