Study on gas-sensing property of Au-doped SnO<sub>2</sub> toluene sensor

HONG Qin; FU Gang; PENG Zhen-kang; WU Shu-rong; CHEN Huan

doi:10.13873/j.1000-97872009.02.009

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Study on gas-sensing property of Au-doped SnO₂ toluene sensor

更新时间：2025-09-11

- Study on gas-sensing property of Au-doped SnO₂ toluene sensor
- Vol. 28, Issue 2, Pages: 42-44+47(2009)
- 作者机构：
  
  广州大学物理与电子工程学院
- 作者简介：
- 基金信息：
- DOI：10.13873/j.1000-97872009.02.009
  CLC： TB332
- Published：2009
- 稿件说明：
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[1]洪琴,傅刚,彭振康,吴树荣,陈环.掺杂Au改善SnO_2甲苯气敏元件性能的研究[J].传感器与微系统,2009,28(02):42-44+47.

HONG Qin, FU Gang, PENG Zhen-kang, et al. Study on gas-sensing property of Au-doped SnO₂ toluene sensor[J]. 2009, 28(2): 42-44+47.
[1]洪琴,傅刚,彭振康,吴树荣,陈环.掺杂Au改善SnO_2甲苯气敏元件性能的研究[J].传感器与微系统,2009,28(02):42-44+47. DOI： 10.13873/j.1000-97872009.02.009.

HONG Qin, FU Gang, PENG Zhen-kang, et al. Study on gas-sensing property of Au-doped SnO₂ toluene sensor[J]. 2009, 28(2): 42-44+47. DOI： 10.13873/j.1000-97872009.02.009.

摘要

SnO2掺杂Au

WO3

La制备了纳米材料

采用丝网印刷方法获得平面厚膜型甲苯气敏元件

通过测量材料的气敏特性和复阻抗谱

探讨了掺杂对元件的灵敏度、选择性和响应速度的影响。结果表明:Au掺杂能极大地提高元件对甲苯的灵敏度

在体积分数为100×10-6甲苯气氛中灵敏度达35

元件的响应时间约为20 s

恢复时间约为10 s

对乙醇、甲醛、丙酮和苯气氛有良好的选择性。复阻抗分析说明对甲苯气氛的灵敏度来源于晶界电阻和晶界电容的变化。灵敏度提高与掺Au有效地改善了界面的氧吸附效应有关。

Abstract

SnO2 nano-powders mixed with Au

WO3 and La are prepared.Thick films to1uene sensors are fabricated in a planar structure by silk-screen printing.The effects of additives on the properties of SnO2 gas-sensors such as sensitivity

selectivity and response properties are researched according to electronic measuring and complex-impedance spectra.The results show that doping of Au can obviously improve the sensitivity of the sensor to toluene

when volume fraction of toluene is 100×10-6

the sensitivity is 35.The response time and the recover time of sensor is 20 s and 10 s respectively

the selectivity to alcohol

formaldehyde

acetone and benzene gases is good.The complex impedance analysis means that the sensitivity to toluene comes from the change of SnO2 grain-boundary resistance and grain-boundary capacitance.That is relational to the adsorption and desorption of surface oxygen-ion improved by the doping of Au.

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references

SnO 2 基甲苯传感器的研制 [J]. 刘如征,何月华,王彪,刘凤敏,陈丽华,全宝富. 传感技术学报 . 2007(02)

基于多壁纳米碳管的传感器对甲苯的气敏性研究 [J]. 陈金霞,郭淼,陈文菊,李昱,李婷,张孝彬,陈裕泉. 传感技术学报 . 2005(01)

SnO 2 气敏元件灵敏度及选择性的复阻抗分析 [J]. 傅刚,陈志雄,张进修. 无机材料学报 . 2000(03)

电子陶瓷物理[M]. 华中理工大学出版社 , 李标荣,张绪礼编著, 1991

半导体陶瓷及应用[M]. 华中理工大学出版社 , 周东社, 1991

半导体物理学[M]. 国防工业出版社 , 刘恩科等编著, 1989

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Study on gas-sensing property of Au-doped SnO2 toluene sensor

DOI：10.13873/j.1000-97872009.02.009

摘要

Abstract

关键词

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references

Study on gas-sensing property of Au-doped SnO₂ toluene sensor