Fluctuation-enhanced gas sensing

被引：8

作者：

Aroutiounian, V ^{[1
]}

Mkhitaryan, Z. ^{[1
]}

Adamian, A. ^{[1
]}

Granqvist, C. -G ^{[2
]}

Kish, L. ^{[3
]}

机构：

[1] Yerevan State Univ, Ctr Semicond Devices & Nanotechnol, Yerevan 0025, Armenia

[2] Uppsala Univ, Dept Engn Sci, Angstrom Lab, S-75121 Uppsala, Sweden

[3] Texas A&M Univ, Dept Elect & Comp Engn, College Stn, TX 77843 USA

来源：

PROCEEDINGS OF THE EUROSENSORS XXIII CONFERENCE | 2009年 / 1卷 / 01期

关键词：

Sensor; hydrogen; metaloxide; porous silicon; sensitivity; noise; HYDROGEN; SENSORS;

D O I：

10.1016/j.proche.2009.07.054

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The sensitivity of gas sensors was earlier measured by classical method-comparison the resistance of sensors in gas media and air. Here we reported results of the study of low-frequency noise characteristics of sensors. We compare data for different Figaro TGS sensors as well as our sol-gel H-2 tin dioxide and porous silicon sensors. The study was performed in dry air and in a mix of dry air with carbon monoxide, hydrogen and alcohol of different concentrations. Higher sensitivity of spectral dependence of noise (SDN) to gas concentration in comparison with classical method of the measurements of gas sensing by a change in the Ohmic resistance part of current-voltage characteristics of samples allows using such SND powerful method for determination of gas concentration in the air or environment.

引用

页码：216 / +

页数：2

共 6 条

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Adamyan, A. Z.
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[6] Phonon mechanism of mobility equilibrium fluctuation and properties of 1/f-noise
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[J]. PHYSICA B-CONDENSED MATTER, 2006, 382 (1-2) : 65 - 70

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