Development of microstructure CO sensor based on hierarchically porous ZnO nanosheet thin films
| Autor: | Weitao T. Zheng, Yifei F. Bing, Tong Zhang, Liang Qiao, Guangtian T. Zou, Mao Wen, Bo Zou, Yi Zeng |
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| Rok vydání: | 2012 |
| Předmět: |
Materials science
Nanostructure Metals and Alloys Nanoparticle Nanotechnology Substrate (electronics) Condensed Matter Physics Microstructure Surfaces Coatings and Films Electronic Optical and Magnetic Materials Electrode Materials Chemistry Electrical and Electronic Engineering Thin film Porosity Instrumentation Nanosheet |
| Zdroj: | Sensors and Actuators B: Chemical. 173:897-902 |
| ISSN: | 0925-4005 |
| DOI: | 10.1016/j.snb.2012.05.090 |
| Popis: | A microstructure sensor based on hierarchically porous ZnO nanosheet (NS) thin films has been achieved by using a facile two-step solution phase method. The transparent ZnO seed-layer covered on both the conducting electrodes and the insulating SiO 2 spacer regions acts as lattice-matched template, on which the assembly of ZnO NS thin films has been subsequently completed via a facile solvothermal process. The phase purity, morphology, and structure of the as-prepared NSs are investigated, and the results reveal that ZnO NSs, grown vertically on the substrate, exhibit hierarchically porous nanostructure with subunits of nanoparticles. The gas-sensing properties exhibit not only high response to CO with the response time of 25 s, but also low cross response to common interference gases at the operating temperature of 300 °C. |
| Databáze: | OpenAIRE |
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