Influence of surface Pd doping on gas sensing characteristics of SnO2 thin films deposited by spray pirolysis

被引：124

作者：

Korotcenkov, G

Brinzari, V

Boris, Y

Ivanova, M

Schwank, J

Morante, J

机构：

[1] Tech Univ Moldova, Dept Micro & Optoelect, Kishinev, Moldova

[2] Univ Michigan, Dept Chem Engn, Ann Arbor, MI 48109 USA

[3] Univ Barcelona, Dept Elect, E-08007 Barcelona, Spain

来源：

THIN SOLID FILMS | 2003年 / 436卷 / 01期

关键词：

SnO2; pyrolysis; thin films; Pd doping; gas response; kinetics;

D O I：

10.1016/S0040-6090(03)00506-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this article the analysis of steady state and transient gas sensing characteristics of undoped and Pd surface doped SnO2 films, deposited by spray pyrolysis, is described. The influence of parameters such as air humidity (2-50% RH), operation temperature (25-500 degreesC) and Pd surface concentration (0-1% ML Pd) on gas response to CO and H-2 (0.1-0.5%), response time, shape of sensitivity S(T) curves and activation energy of tau(1/kT) dependencies are discussed. A mechanism based on a chemisorption model is proposed to explain how Pd influences the gas sensing characteristics of SnO2 films. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：119 / 126

页数：8

共 28 条

[1] Optimization of tin dioxide nanosticks faceting for the improvement of palladium nanocluster epitaxy
Arbiol, J
Cirera, A
Peiró, F
Cornet, A
Morante, JR
Delgado, JJ
Calvino, JJ
[J]. APPLIED PHYSICS LETTERS, 2002, 80 (02) : 329 - 331
[2] In consideration of precursor states, spillover and Boudart's 'collection zone' and of their role in catalytic processes
Bowker, M
Bowker, LJ
Bennett, RA
Stone, P
Ramirez-Cuesta, A
[J]. JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2000, 163 (1-2) : 221 - 232
[3] Brinzari V, 2002, J OPTOELECTRON ADV M, V4, P147
[4] Morphological rank of nano-scale tin dioxide films deposited by spray pyrolysis from SnCl45H2O water solution
Brinzari, V
Korotcenkov, G
Golovanov, V
Schwank, J
Lantto, V
Saukko, S
[J]. THIN SOLID FILMS, 2002, 408 (1-2) : 51 - 58
[5] Simulation of thin film gas sensors kinetics
Brynzari, V
Korotchenkov, G
Dmitriev, S
[J]. SENSORS AND ACTUATORS B-CHEMICAL, 1999, 61 (1-3): : 143 - 153
[6] Brynzari V., 2000, J ELECT TECHNOL, V33, P225
[7] Influence of the catalytic introduction procedure on the nano-SnO2 gas sensor performances -: Where and how stay the catalytic atoms?
Cabot, A
Diéguez, A
Romano-Rodríguez, A
Morante, JR
Bârsan, N
[J]. SENSORS AND ACTUATORS B-CHEMICAL, 2001, 79 (2-3) : 98 - 106
[8] CHANG SC, 1983, P INT M CHEM SENSORS, P78
[9] Binding and diffusion of Pt nanoclusters on anatase TiO2(001)-(1 x 4) surface
El-Azab, A
Gan, S
Liang, Y
[J]. SURFACE SCIENCE, 2002, 506 (1-2) : 93 - 104
[10] MOLECULAR-BEAM INVESTIGATION OF THE REACTION H-2+1/2O-2-]H2O ON PD(111)
ENGEL, T
KUIPERS, H
[J]. SURFACE SCIENCE, 1979, 90 (01) : 181 - 196

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