Carbide-free one-zone sulfurization method grows thin MoS2 layers on polycrystalline CVD diamond
| Autor: | Gabriel Vanko, Peter Siffalovic, Martin Hulman, Tibor Ižák, Alexander Kromka, Oleg Babchenko, M. Sojková, Nada Mrkyvkova, Jakub Hagara, Edmund Dobročka, Eva Majkova |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
Materials science chemistry.chemical_element lcsh:Medicine Chemical vapor deposition engineering.material Article 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine X-ray photoelectron spectroscopy Specific surface area lcsh:Science Molybdenum disulfide Multidisciplinary lcsh:R Diamond 030104 developmental biology chemistry Chemical engineering Molybdenum engineering lcsh:Q Crystallite Layer (electronics) 030217 neurology & neurosurgery |
| Zdroj: | Scientific Reports, Vol 9, Iss 1, Pp 1-11 (2019) Scientific Reports |
| ISSN: | 2045-2322 |
| Popis: | The last few decades faced on the fabrication of advanced engineering materials involving also different composites. Here, we report on the fabrication of few-layer molybdenum disulfide on top of thin polycrystalline diamond substrates with a high specific surface area. In the method, pre-deposited molybdenum coatings were sulfurized in a one-zone furnace at ambient pressure. As-prepared MoS2 layers were characterized by several techniques including grazing-incidence wide-angle X-ray scattering, atomic force microscopy, scanning electron microscopy, Raman spectroscopy and X-ray photoelectron spectroscopy. We found out that the initial thickness of Mo films determined the final c-axis crystallographic orientation of MoS2 layer as previously observed on other substrates. Even though it is well-known that Mo diffuses into diamond at elevated temperatures, the competing sulfurization applied effectively suppressed the diffusion and a chemical reaction between molybdenum and diamond. In particular, a Mo2C layer does not form at the interface between the Mo film and diamond substrate. The combination of diamond high specific surface area along with a controllable layer orientation might be attractive for applications, such as water splitting or water disinfection. |
| Databáze: | OpenAIRE |
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