High-Resolution Raman and Luminescence Spectroscopy of Isotope-Pure 28Si12C, Natural and 13C – Enriched 4H-SiC
| Autor: | Milan Yazdanfar, Jr Tai Chen, Erik Janzén, Bjorn Lundqvist, Rickard Liljedahl, Nguyen Tien Son, Olle Kordina, Joel W. Ager, Ivan Gueorguiev Ivanov, Pontus Stenberg, Jawad ul Hassan |
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| Rok vydání: | 2014 |
| Předmět: |
Materials science
Photoluminescence Phonon Mechanical Engineering Analytical chemistry Physics::Optics Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Brillouin zone Condensed Matter::Materials Science symbols.namesake Mechanics of Materials symbols General Materials Science Spectroscopy Raman spectroscopy Luminescence Excitation Tunable laser |
| Zdroj: | Materials Science Forum. :471-474 |
| ISSN: | 1662-9752 |
| DOI: | 10.4028/www.scientific.net/msf.778-780.471 |
| Popis: | The optical properties of isotope-pure28Si12C, natural SiC and enriched with13C isotope samples of the 4H polytype are studied by means of Raman and photoluminescence spectroscopies. The phonon energies of the Raman active phonons at the Γ point and the phonons at the M point of the Brillouin zone are experimentally determined. The excitonic bandgaps of the samples are accurately derived using tunable laser excitation and the phonon energies obtained from the photoluminescence spectra. Qualitative comparison with previously reported results on isotope-manipulated Si is presented. |
| Databáze: | OpenAIRE |
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