The gas-sensing of SmCoOx/MOx (M = Fe, Zn, In, Sn) having a heterojunction

被引：27

作者：

Mochinaga, R ^{[1
]}

Yamasaki, T ^{[1
]}

Arakawa, T ^{[1
]}

机构：

[1] Kinki Univ, Fac Engn, Dept Ind Chem, Fukuoka 8200011, Japan

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 1998年 / 52卷 / 1-2期

关键词：

samarium-cobalite; heterocontact; iron oxide; ethanol gas-sensing;

D O I：

10.1016/S0925-4005(98)00262-7

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Heterocontacts between p-type SmCoO3 and n-type MOx (M = Fe, Zn, In, Sn) were prepared by mechanically contacting two sintered pellets. The sensitivity of SmCoO3/MOx for C2H5OH gases depends on the kind of MOx and measuring temperature. When the response activity was compared in terms of the peak temperature of a sensitivity-temperature curve, the order in activity was Fe2O3 >In(2)O(3)greater than or equal to SnO2>ZnO. The activity of these elements was correlated with the activation energy (Delta E-d) of the conductivity of MOx. (C) 1998 Elsevier Science S.A. All rights reserved.

引用

页码：96 / 99

页数：4

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