Influence of Ag particle size on ethanol sensing of SnO1.8:Ag nanoparticle films:: A method to develop parts per billion level gas sensors

被引：54

作者：

Joshi, Rakesh K. ^{[1
]}

Kruis, F. Einar ^{[1
]}

机构：

[1] Univ Duisburg Essen, Fak Ingn Wissensch, Abt Elektrotech & Informat Tech, Fachgebiet Nanostruct Tech, D-47057 Duisburg, Germany

来源：

APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 15期

关键词：

D O I：

10.1063/1.2360245

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The influence of Ag particle size on ethanol sensing of SnO1.8:Ag films composed of size-selected nanoparticles with independently controlled size and concentration of Ag is reported in the present study. The study shows that Ag nanoparticles are acting as catalyst for chemical sensitization through a spillover effect. The catalyst particles are observed to be more active on decreasing their size, resulting into an improved sensor response. A response time of 2 s for 1000 ppm ethanol has been achieved. Detection of 100 ppb ethanol in air has been demonstrated using this well-defined technique. (c) 2006 American Institute of Physics.

引用

页数：3

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