Low Temperature Operated NO2 Gas Sensor Based on SnO2-ZnO Nanocomposite Thin Film

被引：23
|
作者：
Sonker, Rakesh Kumar [1 ]
Sharma, Anjali [2 ]
Tomar, Monika [3 ]
Gupta, Vinay [2 ]
Yadav, B. C. [1 ]
机构：
[1] Babasaheb Bhimrao Ambedkar Univ, Dept Appl Phys, Lucknow, Uttar Pradesh, India
[2] Univ Delhi, Dept Phys & Astrophys, Delhi 110007, India
[3] Univ Delhi, Dept Phys, Delhi 110007, India
来源：
ADVANCED SCIENCE LETTERS | 2014年 / 20卷 / 5-6期
关键词：
Zinc Oxide; NO2 Gas Sensor; Characterization; Nanocomposite; SENSING PROPERTIES; INHALED ALLERGEN; NITROGEN-DIOXIDE; ROOM-TEMPERATURE; EXPOSURE;
D O I：
10.1166/asl.2014.5461
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Nanocrystalline composite thin films of Zinc oxide and Tin oxide (ZSO) have been synthesized using chemical route for the efficient trace level (20 ppm) detection of NO2 gas at lower operating temperature. The prepared ZSO sensor structure showed a high sensing response of about 1.578 x 10(3) towards 20 ppm of NO2 gas at a lower operating temperature of 70 degrees C with an average response and recovery time of 3.91 min. and 6.91 min. respectively. The structural, optical and surface morphological properties of the ZSO composite thin film have been studied by X-ray diffraction (XRD), UV-Visible spectroscopy, Atomic Force microscopy (AFM) images and have also been correlated with the observed enhancement in gas sensing properties of prepared sensor structure.
引用
收藏
页码：911 / 916
页数：6
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