Journal ArticleDOI
Sputter deposited p-NiO/n-SnO2 porous thin film heterojunction based NO2 sensor with high selectivity and fast response
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In this paper, the authors report fabrication and characterization of porous, single layer n-SnO2, p-NiO and bilayer thin film heterojunction devices developed using pulsed DC magnetron sputtering for NO2 detection.Abstract:
In this work, we report fabrication and characterization of porous, single layer n-SnO2, p-NiO and bilayer thin film heterojunction devices developed using pulsed DC magnetron sputtering for NO2 detection. Template-free, NiO/SnO2 heterojunction devices were deposited both in top-bottom and in-plane electrode configurations. All the devices showed an optimum sensing temperature of 200 °C. Systematic comparison of the fabricated devices revealed that the heterojunction devices with top-bottom electrodes improved performance. Electrical characterization confirmed the formation of heterojunction across the interface. The response values of the heterojunction sensor ranged from 57 to 144 % for the NO2 concentration range of 2–10 ppm. The heterojunction device showed high selectivity against CO and NH3 with selectivity coefficients of 90 and 26, respectively. The heterojunction sensor exhibited fast response and recovery times of 37 and 98 s, respectively. The device showed excellent stability withread more
Citations
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Journal ArticleDOI
Metal Oxide Gas Sensors For Detecting NO2 in Industrial Exhaust Gas: Recent Developments
TL;DR: In this paper , the hazards of NO2 and the major disadvantages of chemiresistive sensors based on metal oxides were discussed and different sensitive materials of chemical resistance sensors were discussed, including conductive polymers and carbon-based materials.
Journal ArticleDOI
Highly sensitive NO2 response and abnormal P-N sensing transition with ultrathin Mo-doped SnS2 nanosheets
Jianhong Zhou,Ke Xue,Yaoda Liu,Tingting Liang,Pengfei Zhang,Xu Zhang,Wentao Zhang,Zhengfei Dai,Zhengfei Dai +8 more
TL;DR: In this article, two-dimensional ultrathin n-type SnS2 nanosheets with Mo doping have been synthesized via a simple single-step solvothermal method and exploited for NO2 sensing application.
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Microwave-assisted hydrothermal synthesis of copper oxide-based gas-sensitive nanostructures
TL;DR: In this paper, the principle, mechanism and recent development of CuO nanostructures obtained by microwave-assisted hydrothermal synthesis (MWHS) process is briefly introduced and discussed the relation between endopathic factors of material and its gas-sensitive performance.
Journal ArticleDOI
Fast-response MEMS xylene gas sensor based on CuO/WO3 hierarchical structure
Mengmeng Guo,Jiaqiang Xu,Na Luo,T. S. Batrachenko,Yang Chen,Yu Fan,Xiaohong Wang,Jiaqiang Xu +7 more
TL;DR: In this paper, the sensing performance of Micro-Electro-Mechanical System (MEMS) xylene gas sensor based on CuO/WO3 hierarchical structure were evaluated.
Journal ArticleDOI
Gold-loaded tellurium nanobelts gas sensor for ppt-level NO2 detection at room temperature
TL;DR: In this paper , the gold-loaded tellurium ([email protected]) nanobelts are synthesized through a one-pot hydrothermal process, and the formation of gold-like gold nanoparticles with a typical thickness of 18 nm is confirmed.
References
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Book
The Materials Science of Thin Films
TL;DR: A review of materials science can be found in this paper, where the authors describe the properties of thin-film materials and their applications in the following categories: electrical and magnetic properties, optical properties, and material properties.
Book ChapterDOI
Relations between the Concentrations of Imperfections in Crystalline Solids
F.A. Kröger,H.J. Vink +1 more
TL;DR: In this paper, a study on relations between the concentrations of imperfections in crystalline solids is presented, and a new treatment of these problems by making use of a graphical representation is presented.