Growth of ZnO Nanowires by Vapour Solid Mechanism
| Autor: | N. Akhiruddin, Rosnita Muhammad, Zuhairi Ibrahim, Yussof Wahab |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Materials science Inorganic chemistry Zno nanowires Nanowire chemistry.chemical_element 02 engineering and technology Zinc 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics Chemical engineering chemistry 0103 physical sciences General Materials Science Vapor–liquid–solid method 0210 nano-technology Mechanism (sociology) |
| Zdroj: | Solid State Phenomena. 268:249-253 |
| ISSN: | 1662-9779 |
| DOI: | 10.4028/www.scientific.net/ssp.268.249 |
| Popis: | The growth of zinc oxide nanowires is further investigated by thermal evaporation method and is discussed with respect to vapour-solid (V-S) growth mechanism. In this paper, ZnO nanowires were synthesized on glass substrate without the use of any catalyst with a constant flow of argon gas 1.36 psig and oxygen gas of 0.34 psig. Zinc powder of 99.99% purity is placed in a horizontal furnace and exposed to temperature of 600°C for 90 minutes. The surface morphology of the deposited zinc oxide is investigated by the atomic force microscopy (AFM) images and it was found that the deposited ZnO has a rough surface while field-emission scanning electron microscopy (FESEM) confirms the morphology of the ZnO nanowires. Photoluminescence (PL) spectra indicate that the optical quality of the deposited structure is potentially excellent with high energy excitonic emission close to the band edge which is assigned to the surface exciton in ZnO at 3.4eV. |
| Databáze: | OpenAIRE |
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