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https://repositorio.ufba.br/handle/ri/4916
metadata.dc.type: | Artigo de Periódico |
Title: | Photoacoustic and transmission studies of SiC polytypes |
Other Titles: | Materials Research |
Authors: | Oliveira, A. C. de Freitas Junior, J. A. Moore, W. J. Silva, A. Ferreira da Pepe, Iuri Muniz Almeida, J. Souza de Braga, G. C. B. Osório-Guillen, J. M. Persson, C. Ahuja, Rajeev |
metadata.dc.creator: | Oliveira, A. C. de Freitas Junior, J. A. Moore, W. J. Silva, A. Ferreira da Pepe, Iuri Muniz Almeida, J. Souza de Braga, G. C. B. Osório-Guillen, J. M. Persson, C. Ahuja, Rajeev |
Abstract: | The optical bandgap energies (OBGE) of 3C, 15R, 6H and 4H-SiC have been investigate experimentally by transmission and photoacoustic spectroscopies. The measurements were performed on 470 mm thick wafers. The OBGE obtained from both spectroscopies for different polytypes show very good agreement. In order to have a better understanding of these materials calculations of eletronic band structure were performed by the full-potential linearized augmented plane wave (FPLAPW) method. For the OBGE the results are compared to the measurements agreeing closely over the energies of those polytypes. |
Keywords: | SiC Polytypes Optical bandgap energies Plane wave method |
URI: | http://www.repositorio.ufba.br/ri/handle/ri/4916 |
Issue Date: | 2003 |
Appears in Collections: | Artigo Publicado em Periódico (FIS) |
Files in This Item:
File | Description | Size | Format | |
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v6n1a09.pdf | 405,06 kB | Adobe PDF | View/Open |
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