Temperature dependence of CO detection by SnO2:: Pd sensitive films gas sensors

被引：0

作者：

Bercu, M. ^{[1
]}

Tomescu, A. ^{[1
]}

Roescu, R. ^{[1
]}

Moldovan, C. ^{[1
]}

机构：

[1] Univ Bucharest, Fac Phys, Bucharest Maguerele 76900, Romania

来源：

CAS 2005: INTERNATIONAL SEMICONDUCTOR CONFERENCE | 2005年 / 1-2卷

关键词：

carbon monoxide; sensitivity; tin oxide; palladium catalyst; water vapour;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The electrical response to CO partial pressure in dry and wet synthetic air was investigated in the range of 200-650(0)C, for SnO2 and SnO2-Pd thick films. Two peaks of sensitivity where found at 200, respectively 500(0)C in the case of CO interaction with the surface of SnO2 exposed to dry atmosphere. The presence of water vapours induced an extra peak of sensitivity at 300(0)C for pure SnO2 sensors. The influence of Pd catalyst on CO detection has been studied in wet at humid atmosphere versus temperature.

引用

页码：193 / 196

页数：4

共 7 条

[1] THE MECHANISM OF THE INTERACTION BETWEEN CO AND AN SNO2 SURFACE - THE ROLE OF WATER-VAPOR
BARSAN, N
IONESCU, R
[J]. SENSORS AND ACTUATORS B-CHEMICAL, 1993, 12 (01) : 71 - 75
[2] BARSAN N, J PHYS CONDENS MATTE, V15, pR813
[3] CO sensing with SnO2 thick film sensors:: role of oxygen and water vapour
Hahn, SH
Bârsan, N
Weimar, U
Ejakov, SG
Visser, JH
Soltis, RE
[J]. THIN SOLID FILMS, 2003, 436 (01) : 17 - 24
[4] DRIFT studies of thick film un-doped and Pd-doped SnO2 sensors:: temperature changes effect and CO detection mechanism in the presence of water vapour
Harbeck, S
Szatvanyi, A
Barsan, N
Weimar, U
Hoffmann, V
[J]. THIN SOLID FILMS, 2003, 436 (01) : 76 - 83
[5] HEILAND G, 2002, CHEM SENSOR TECHNOLO, V1, P1
[6] The effect of Pt and Pd surface doping on the response of nanocrystalline tin dioxide gas sensors to CO
SchweizerBerberich, M
Zheng, JG
Weimar, U
Gopel, W
Barsan, N
Pentia, E
Tomescu, A
[J]. SENSORS AND ACTUATORS B-CHEMICAL, 1996, 31 (1-2) : 71 - 75
[7] AC MEASUREMENTS ON TIN OXIDE SENSORS TO IMPROVE SELECTIVITIES AND SENSITIVITIES
WEIMAR, U
GOPEL, W
[J]. SENSORS AND ACTUATORS B-CHEMICAL, 1995, 26 (1-3) : 13 - 18

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