Room temperature liquefied petroleum gas (LPG) sensor

被引：72

作者：

Dhawale, D. S. ^{[1
]}

Dubal, D. P. ^{[1
]}

More, A. M. ^{[1
]}

Gujar, T. P. ^{[1
]}

Lokhande, C. D. ^{[1
]}

机构：

[1] Shivaji Univ, Dept Phys, Thin Film Phys Lab, Kolhapur 416004, Maharashtra, India

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2010年 / 147卷 / 02期

关键词：

Heterojunction; Thin films; LPG sensor; Selectivity; LPG sensor model; Stability; ZNO; POLYANILINE; SENSITIVITY; FABRICATION; FILMS; OXIDE; MECHANISM; DIODE;

D O I：

10.1016/j.snb.2010.02.063

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The p-polyaniline/n-ZnO thin film heterojunction sensor for room temperature LPG detection was fabricated by electrodepositing polyaniline on chemical bath deposited ZnO film. The heterojunction showed rectifying behavior indicating the formation of a diode with ideality factor 1.10. The formation of diffusion free interface of heterojunction was confirmed from cross-sectional FESEM. The heterojunction sensor has quick and high response towards LPG as compared to N-2 and CO2 and exhibited maximum response of 81% upon exposure of 1040 ppm of LPG. The LPG sensing mechanism for heterojunction is modeled through change in height of barrier potential. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：488 / 494

页数：7

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