Catalyst-Free Growth of Tin Oxide One-Dimensional Nanostructures on Silicon Nitride Substrates
| Autor: | S.H. Shim, Hyoun Woo Kim, C. Lee, D.J. Chung, S.G. Park, S.G. Lee, B.H. O, J. Kim, S.P. Chang, S.H. Lee |
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| Rok vydání: | 2007 |
| Předmět: |
Materials science
Scanning electron microscope Mechanical Engineering Nanotechnology Substrate (electronics) Nitride Condensed Matter Physics Tin oxide Nanomaterials chemistry.chemical_compound Silicon nitride chemistry Chemical engineering Mechanics of Materials Transmission electron microscopy General Materials Science Nanorod |
| Zdroj: | Materials Science Forum. 555:297-302 |
| ISSN: | 1662-9752 |
| Popis: | We have obtained one-dimensional (1D) nanomaterials of tin oxide (SnO2) on silicon nitride (Si3N4)-coated Si substrates by carrying out the thermal evaporation of solid Sn powders and varying the substrate temperature in an Ar/O2 ambient gas. We analyzed the samples with scanning electron microscopy, X-ray diffraction, transmission electron microscopy and photoluminescence (PL). Reactions at a lower substrate temperature gave rise to thinner 1D structures. The obtained 1D nanomaterials were single crystalline with a tetragonal rutile structure. We proposed a vapor-solid process as the growth mechanism for SnO2 nanorods. The PL spectrum exhibited visible light emission. |
| Databáze: | OpenAIRE |
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