Ammonia gas sensing with tin oxide thin film sensor and coplanar microheater

A simple process of gas sensing is represented here using Ce doped tin oxide nanomaterial based thin film sensor. A novel flow metric gas chamber has been designed and utilized for gas sensing. Doping plays a vital role in enhancing the sensing properties of nanomaterials. Ce doped tin oxide was prepared by hydrothermal method and the same has been used to fabricate a thin film for sensing. The microstructure and morphology of the prepared materials were analysed by SEM, XRD, and FTIR analysis. The SEM images clearly show that doping can clamp down the growth of the large crystallites and can lead to large agglomeration spheres. Thin film gas sensors were formed from undoped pure SnO2and Ce doped SnO2. The sensors were exposed to ammonia and ethanol gases. The responses of the sensors to different concentrations (50–500 ppm) of ammonia and ethanol at different operating temperatures (225°C–500°C) were studied. Results show that a good sensitivity towards ammonia was obtained with Ce doped SnO2thin film sensor at an optimal operating temperature of 325°C. The Ce doped sensor also showed good selectivity towards ammonia when compared with ethanol. Pure SnO2showed good sensitivity with ethanol when compared with Ce doped SnO2thin film sensor. Response time of the sensor and its stability were also studied.

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A simple and cost-effective zinc oxide thin film sensor for propane gas detection

Materials Letters ◽

10.1016/j.matlet.2015.05.065 ◽

2015 ◽

Vol 157 ◽

pp. 169-171 ◽

Cited By ~ 37

Author(s):

Vinoth Kumar Jayaraman ◽

Arturo Maldonado Álvarez ◽

María de la Luz Olvera Amador

Keyword(s):

Thin Film ◽

Zinc Oxide ◽

Cost Effective ◽

Gas Detection ◽

Oxide Thin Film ◽

Zinc Oxide Thin Film ◽

Film Sensor ◽

Thin Film Sensor

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Dataset of N-doped CuO:NiO mixed oxide thin film sensor for glucose oxidation

Data in Brief ◽

10.1016/j.dib.2020.106408 ◽

2020 ◽

Vol 33 ◽

pp. 106408

Author(s):

Maghmood Palmer ◽

Milua Masikini ◽

Li-Wen Jiang ◽

Jian-Jun Wang ◽

Franscious Cummings ◽

...

Keyword(s):

Thin Film ◽

Mixed Oxide ◽

Glucose Oxidation ◽

Oxide Thin Film ◽

Film Sensor ◽

Thin Film Sensor

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Comparative Study of Unmodified WO3-ZnO and Au-Modified WO3-ZnO Based Thin Film Sensor Fabrication for Enhanced CH4 Gas Sensing Performance

2018 IEEE Electron Devices Kolkata Conference (EDKCON) ◽

10.1109/edkcon.2018.8770222 ◽

2018 ◽

Author(s):

Anup Dey ◽

Bikram Biswas ◽

Subir Kumar Sarkar

Keyword(s):

Thin Film ◽

Comparative Study ◽

Gas Sensing ◽

Film Sensor ◽

Thin Film Sensor ◽

Sensor Fabrication ◽

Sensing Performance

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Liquid-Phase Co-Exfoliated Graphene/MoS2 Nanocomposite for Methanol Gas Sensing

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2015.11254 ◽

2015 ◽

Vol 15 (10) ◽

pp. 8004-8009 ◽

Cited By ~ 13

Author(s):

Shao-Lin Zhang ◽

Hongyan Yue ◽

Xishuang Liang ◽

Woo-Chul Yang

Keyword(s):

Thin Film ◽

Gas Sensing ◽

Synergetic Effect ◽

Film Sensor ◽

Thin Film Sensor ◽

Sensor Material ◽

Enhanced Sensitivity ◽

Distinct Structure ◽

Nanocomposite Sensor ◽

Sensing Performance

We developed an efficient method to co-exfoliate graphite and MoS2 to fabricate graphene/MoS2 nanocomposite. The size, morphology, and crystal structure of the graphene/MoS2 nanocomposite were carefully examined. The as-prepared graphene/MoS2 nanocomposite was fabricated into thin film sensor by a facile drop casting method and tested with methanol gas in various concentrations. The sensitivity, response time, and repeatability of the graphene/MoS2 nanocomposite sensor towards methanol gas were systematically investigated. A pure MoS2− based thin film sensor was also prepared and compared with the nanocomposite sensor to better understand the synergetic effect in the sensing performance. Our research demonstrated that compositing MoS2 with graphene could overcome the shortcoming of MoS2 as a sensor material and bring in a promising gas-sensing performance with a quicker response/recovery time and an enhanced sensitivity. Moreover, this composited material with a distinct structure and an excellent electronic property is expected to have potential application in various fields, such as optoelectronic.

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