Document Details
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Document Type |
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Article In Journal |
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Document Title |
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Control of ZnO Nanostructures via Vapor Transport Control of ZnO Nanostructures via Vapor Transport |
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Document Language |
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English |
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Abstract |
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An adapted form of vapor transport is used for the preparation of zinc oxide (ZnO) nanostructures. Control of substrate, partial pressure, temperature, and deposition time enable the synthesis of seven ZnO samples, each with different morphology. Characterization by X-ray diffraction (XRD), photoluminescence spectroscopy (PLS), and scanning electron microscopy (SEM) shows ZnO forms with a wide range of microstructures such as nano-stars, nano-caterpillars, urchin-like structures, and vertically aligned forests of hexagonal nanorods. Adopting a systematic approach of varying a single parameter from the standard experimental method, enables an understanding of why the resultant morphologies are obtained. In particular, a growth mechanism is proposed whereby hexagonal crystals grow from the catalytic substrate consisting of gold droplets, close to, or at, the melting temperature, supersaturated with zinc and oxygen, allowing propagation of hexagonal parent pillars. Parent pillars then form daughter rods which propagate sideways from the faces with angles tending towards 60 degrees from each other. |
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ISSN |
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0948-1907 |
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Journal Name |
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CHEMICAL VAPOR DEPOSITION |
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Volume |
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18 |
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Issue Number |
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10-12 |
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Publishing Year |
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1433 AH
2012 AD |
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Article Type |
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Article |
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Added Date |
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Monday, July 10, 2017 |
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Researchers
| D Modeshia | Modeshia, D | Researcher | | |
| C Dunnill | Dunnill, C | Researcher | | |
| y Suzuki | Suzuki, y | Researcher | | |
| A Al-Ghamdi | Al-Ghamdi, A | Researcher | | |
| e El-Mossalamy | El-Mossalamy, e | Researcher | | |
| S Basahel | Basahel, S | Researcher | | |
| A Alyoubi, | Alyoubi,, A | Researcher | | |
| i Parkin | Parkin, i | Researcher | | |
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