The fabrication and gas-sensing characteristics of the formaldehyde gas sensors with high sensitivity
The fabrication and gas-sensing characteristics of the formaldehyde gas sensors with high sensitivity
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DOI：
10.1016/j.snb.2007.11.025
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发表时间：
2008-04-14
影响因子：
8.4
通讯作者：
Wang, Y. D.
中科院分区：
文献类型：
--
作者：
Chen, T.;Liu, Q. J.;Wang, Y. D.
研究了cdo -混合In(2)O(3)对甲醛的气敏特性。利用该敏感材料制备了间接加热型气体传感器。通过x射线衍射（XRD）和扫描电镜（SEM）分别对煅烧前后材料的物相和传感层的形貌进行了表征。研究了工作温度对传感器响应的影响以及CdO - In(2)O(3)传感器响应随气体浓度的变化特性。结果表明，该传感器在低工作温度下对甲醛气体具有良好的响应性能，有望成为甲醛气体的实用探测器。(c) 2007 Elsevier B.V.版权所有
Gas-sensing characteristics of CdO-mixed In(2)O(3) to formaldehyde were investigated. Gas sensors of indirect heating type were fabricated by the sensitive materials. The phases in the resulting materials and the morphologies of the sensing layers were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively, before and after calcination. The effects of operating temperature on the sensor response and the response versus gas concentration properties of the CdO - In(2)O(3) sensors were investigated. It was shown that the sensors exhibited good response properties to formaldehyde gas at low operating temperature, making them to be promising candidates for practical detectors to formaldehyde gas. (c) 2007 Elsevier B.V. All rights reserved.