Large-scale fabrication of highly sensitive SnO2 nanowire network gas sensors by single step vapor phase growth
Large-scale fabrication of highly sensitive SnO2 nanowire network gas sensors by single step vapor phase growth
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DOI：
10.1016/j.snb.2012.02.022
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发表时间：
2012-04-01
影响因子：
8.4
通讯作者：
Lee, Jong-Heun
中科院分区：
文献类型：
--
作者：
Hwang, In-Sung;Kim, Sun-Jung;Lee, Jong-Heun
在激光刻划的Al 2 O3基片上用气相反应法生长了SnO 2纳米线网络，并研究了其气敏特性。该传感器在141 ℃的传感器温度下对5 ppm NO2显示出高响应（R-g/R-a = 1909，R-g：气体中的电阻，R-a：空气中的电阻），在240 ℃和296 ℃下对100 ppm C2 H5 OH显示出高选择性响应（R-a/R-g= 301.8-326.4）。这表明，高性能的SnO 2纳米线网络气体传感器可以通过一种简单和成本有效的途径大规模制造。(C)2012爱思唯尔有限公司版权所有。
The SnO2 nanowire networks were grown on a laser-scribed Al2O3 substrate containing 16 sensor elements with Au electrodes and Pt heaters via a single step vapor phase reaction, and their gas sensing characteristics were studied. The sensor showed a high response to 5 ppm NO2 (R-g/R-a = 1909, R-g: resistance in gas, R-a: resistance in air) at the sensor temperature of 141 degrees C and high and selective responses to 100 ppm C2H5OH (R-a/R-g= 301.8-326.4) at 240 and 296 degrees C. which demonstrated that high performance SnO2 nanowire network gas sensors can be fabricated on a large scale through a facile and cost-effective route. (C) 2012 Elsevier B.V. All rights reserved.