Citation
Bw. Licznerski et al., The influence of Rh surface doping on anomalous properties of thick-film SnO2 gas sensors, SENS ACTU-B, 79(2-3), 2001, pp. 157-162
Citations number
9
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
SENSORS AND ACTUATORS B-CHEMICAL
ISSN journal
09254005
→ ACNP
Volume
79
Issue
2-3
Year of publication
2001
Pages
157 - 162
Database
ISI
SICI code
0925-4005(20011015)79:2-3<157:TIORSD>2.0.ZU;2-5
Abstract
Here there are presented new results from the investigations of SnO2 thick-
film sensor. The effects of rhodium surface doping on de and ac properties
of SnO2 gas sensors were studied. The measurements reveal anomalous behavio
ur of the sensors. Below characteristic temperature, the resistance of the
sensors increases in presence of reducting gases. The mechanism associated
with the presence of rhodium can be connected with the increase of acceptor
surface states concentration and causes the inversion of near-surface laye
rs. (C) 2001 Elsevier Science BN. All rights reserved.