Metal ion-doped SnO2 ordered porous films and their strong gas sensing selectivity

被引：41

作者：

Jia, Lichao ^{[1
]}

Cai, Weiping ^{[1
]}

Wang, Hongqiang ^{[1
]}

机构：

[1] Chinese Acad Sci, Key Lab Mat Phys, Anhui Key Lab Nanomat & Nanotechnol, Inst Solid State Phys, Hefei 230031, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 10期

基金：

安徽省自然科学基金;

关键词：

ZNO NANOTUBES; SENSORS; ETHANOL; CO;

D O I：

10.1063/1.3358389

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Based on a sol-gel technique and the colloidal monolayer template, ion-doped SnO2 ordered porous films were fabricated, and the corresponding gas-sensing properties were studied. The sensitivity to the given test gases strongly depends on the doping species and doping amount. Importantly, when the doping amount is 1% M, the Cr+3 and Pd+2 doped porous films demonstrate a greatly enhanced sensitivity and strong selectivity to ethanol and ammonia, respectively. The improved sensing properties are attributed to the doping-induced surface modification of the films. Such ion-doped porous films are expected to bring new opportunities for application of future porous film-based gas sensors. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3358389]

引用

页数：3