A wet-chemical process to form palladium oxide sensitiser layer on thin film zinc oxide based LPG sensor

被引：77

作者：

Mitra, P ^{[1
]}

Maiti, HS

机构：

[1] Univ Burdwan, Dept Phys, Burdwan 713104, W Bengal, India

[2] Cent Glass & Ceram Res Inst, Kolkata 700032, W Bengal, India

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2004年 / 97卷 / 01期

关键词：

ZnO films; Pd catalyst; sensors; LPG;

D O I：

10.1016/j.snb.2003.06.003

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The liquid petroleum gas (LPG) sensitivity characteristics of zinc oxide (ZnO) films have been studied for an optimised level of Pd loading. The sensor element comprises of a layer of chemically deposited ZnO on which an overlayer of palladium (Pd) sensitiser was formed by a chemical dipping technique. The room temperature resistance of the film was found to be a sensitive function of the quantity of palladium loading, which could be optimised for stable and reproducible sensor properties. The sensor characteristics that are dependent also on the operating temperature could be optimised at around 250degreesC. A sensitivity of 88% was observed in presence of 1.6 vol.% LPG in air at this optimum temperature with reasonably fast response and recovery times. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：49 / 58

页数：10

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