IR detection of NO2 using p(+) porous silicon as a high sensitivity sensor

Authors
Geobaldo, F Onida, B Rivolo, P Borini, S Boarino, L Rossi, A Amato, G Garrone, E
Citation
F. Geobaldo et al., IR detection of NO2 using p(+) porous silicon as a high sensitivity sensor, CHEM COMMUN, (21), 2001, pp. 2196-2197
Citations number
14
Categorie Soggetti
Chemistry
Journal title
CHEMICAL COMMUNICATIONS
ISSN journal
13597345 → ACNP
Issue
21
Year of publication
2001
Pages
2196 - 2197
Database
ISI
SICI code
1359-7345(2001):21<2196:IDONUP>2.0.ZU;2-8
Abstract
Mesoporous silicon doped with 3.0 x 10(19) B atoms cm(-3) (p(+)-type) is an insulating material which dramatically increases its electrical conductivi ty when exposed to traces of gaseous NO2; nitrogen dioxide chemisorption at the surface generates carriers, the population of which is readily evaluat ed through the intensity of IR absorption.