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https://hdl.handle.net/1822/16958| Título: | Structural and optical studies of CdS nanocrystals embedded in silicon dioxide films |
| Autor(es): | Rolo, Anabela G. Conde, O. Gomes, M. J. M. |
| Palavras-chave: | CdS-doped glass films II–VI semiconductor Rf-sputtering Quantum dots Optical absorption Photoluminescence |
| Data: | 15-Abr-1998 |
| Editora: | Elsevier 1 |
| Revista: | Thin Solid Films |
| Resumo(s): | Silicon dioxide films doped with nanocrystallites of CdS with a mean radius value in the range of 20 to 40 A° have been grown using the magnetron rf-sputtering technique. We have studied the combined effects of rf-power deposition, the number of semiconductor chips on the SiO2 target, and post-annealing temperature on the CdS crystal size. The optical transmission spectra display a marked blue shift of the absorption band edge of up to 400 meV which was attributed to quantum size confinement effects. The luminescence spectra show a narrow emission peak tentatively explained as being due to the recombination of electrons on shallow donor levels with confined valence band holes. |
| Tipo: | Artigo |
| Descrição: | The authors would like to thank Prof. M.I. Vasilevskiy and Prof. M.S. Belsley for helpful discussions. |
| URI: | https://hdl.handle.net/1822/16958 |
| DOI: | 10.1016/S0040-6090(97)01175-9 |
| ISSN: | 0040-6090 |
| Versão da editora: | http://www.sciencedirect.com/science/article/pii/S0040609097011759 |
| Arbitragem científica: | yes |
| Acesso: | Acesso restrito UMinho |
| Aparece nas coleções: | CDF - FMNC - Artigos/Papers (with refereeing) |
Ficheiros deste registo:
| Ficheiro | Descrição | Tamanho | Formato | |
|---|---|---|---|---|
| RoloTSF2.pdf Acesso restrito! | 233,15 kB | Adobe PDF | Ver/Abrir |
