A hot-wire chemical vapor deposition (HWCVD) method for metal oxide and their alloy nanowire arrays
| Autor: | Sreeram Vaddiraju, S. Malhotra, Jyothish Thangala, Mahendra K. Sunkara, Vidhya Chakrapani |
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| Rok vydání: | 2009 |
| Předmět: |
Materials science
Inorganic chemistry technology industry and agriculture Metals and Alloys Nucleation Nanowire Oxide chemistry.chemical_element Surfaces and Interfaces Substrate (electronics) Chemical vapor deposition Tungsten equipment and supplies Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry Chemical engineering Transition metal Molybdenum Materials Chemistry |
| Zdroj: | Thin Solid Films. 517:3600-3605 |
| ISSN: | 0040-6090 |
| DOI: | 10.1016/j.tsf.2009.01.051 |
| Popis: | A concept for synthesizing nanowire arrays of transition metal oxides and their alloys using hot wire chemical vapor deposition (HWCVD) is discussed. Here, unlike conventional HWCVD, the hot filaments act as the source of the metal for the synthesis of one dimensional nanostructures. In the present concept, the chemical vapor transport of metal oxides generated by heating the filaments in low amounts of oxygen, onto substrates maintained at lower temperatures leads to the formation of metal oxide nanowires. Experiments performed using tungsten and molybdenum filaments showed that the nucleation density of the resulting metal oxide nanowires could be varied by varying the substrate temperature. Experiments performed using a magnesium source inside the reactor, in addition to tungsten filaments, resulted in the formation of MgWO4 nanowires. This clearly indicates the possibility of either doping the metal oxide nanowires or alloying during synthesis. |
| Databáze: | OpenAIRE |
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