Morphological and Optical Stability in Growth of Fluorescent SiC on Low Off-Axis Substrates
| Autor: | Mikael Syväjärvi, Peter J. Wellmann, Philip Hens, Valdas Jokubavicius, Rickard Liljedahl, Rositza Yakimova, Michl Kaiser |
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| Rok vydání: | 2013 |
| Předmět: |
Materials science
Photoluminescence Dopant Mechanical Engineering Tantalum chemistry.chemical_element Nanotechnology Condensed Matter Physics Fluorescence law.invention chemistry.chemical_compound Chemical engineering Magazine chemistry Mechanics of Materials law Silicon carbide General Materials Science Sublimation (phase transition) FOIL method |
| Zdroj: | Materials Science Forum. :19-22 |
| ISSN: | 1662-9752 |
| DOI: | 10.4028/www.scientific.net/msf.740-742.19 |
| Popis: | Fluorescent silicon carbide was grown using the fast sublimation growth process on low off-axis 6H-SiC substrates. In this case, the morphology of the epilayer and the incorporation of dopants are influenced by the Si/C ratio. Differently converted tantalum foils were introduced into the growth cell in order to change vapor phase stochiometry during the growth. Fluorescent SiC grown using fresh and fully converted tantalum foils contained morphological instabilities leading to lower room temperature photoluminescence intensity while an improved morphology and optical stability was achieved with partly converted tantalum foil. This work reflects the importance of considering the use of Ta foil in sublimation epitaxy regarding the morphological and optical stability in fluorescent silicon carbide. |
| Databáze: | OpenAIRE |
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