Comparative Study of Fe-Doped ZnO Nanowire Bundle and Their Thin Film for NO2and CH4Gas Sensing

Autor:	Rishi Vyas, Shabana Khan, R. Divakar, Sarla Sharma, S. K. Sharma, Kanupriya Sachdev
Rok vydání:	2015
Předmět:	Spin coating Materials science Polymers and Plastics Organic Chemistry Doping Energy-dispersive X-ray spectroscopy Nanowire Nanogenerator Nanotechnology Condensed Matter Physics Chemical engineering Transmission electron microscopy Materials Chemistry Thin film Wurtzite crystal structure
Zdroj:	Macromolecular Symposia. 357:99-104
ISSN:	1022-1360
DOI:	10.1002/masy.201400195
Popis:	Summary The free standing Fe-doped ZnO nanowire bundle is synthesized by employing a typical vapor phase transport method in single step from Fe+Zn powder in O2+Ar flow. Fe-doped ZnO nanowires are characterized by Transmission Electron Microscopy (TEM) and Energy Dispersive Spectroscopy (EDS) suggesting formation of hexagonal wurtzite phase of ZnO with 7 at% Fe in ZnO with typical nanowire diameter in the range of 20 nm–70 nm. These nanowire bundles are ultrasonicated and processed into thin film using spin coating technique. Both of the Fe- doped ZnO nanowire bundle and thin films are tested for their NO2 and CH4 (20–100 ppm) sensing properties. The thin film exhibited higher operating temperature (300°C) and response time (45 sec) as compared to nanowire bundle (150°C and 15 sec).
Databáze:	OpenAIRE
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