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http://hdl.handle.net/10773/20701| Título: | Luminescence study of mixed valence Eu-doped nanocrystalline glass-ceramics |
| Autor: | Bagga, Ruchika Achanta, Venu Gopal Goel, Ashutosh Ferreira, Jose M. F. Singh, Narinder Pal Singh, Davinder Paul Contini, Vittoria Falconieri, Mauro Sharma, Gopi |
| Palavras-chave: | STRUCTURAL INVESTIGATIONS OXYFLUORIDE GLASSES FLUORIDE GLASSES TRANSPARENT PHOSPHORS IONS BLUE AIR PHOTOLUMINESCENCE SPECTROSCOPY |
| Data: | 2013 |
| Editora: | ELSEVIER SCIENCE BV |
| Resumo: | Eu-doped nanocrystalline NaAlSiO4/NaY9Si6O26 glass-ceramics have been prepared by controlled crystallization of melt quenched bulk glasses. XRD, SEM and FTIR spectroscopy techniques were employed to characterize the crystallization process and the structural properties of the precursor glass and corresponding glass-ceramics. The formation of divalent europium (Eu2+) from Eu3+ ions during high temperature synthesis under ambient atmosphere was analyzed by photoluminescence spectroscopy and is discussed using the optical basicity model. The observed luminescence properties of Eu: NaY9Si6O26 are compared with that of Eu: beta-PbF2 nanocrystals and their marked differences are discussed. (C) 2013 Elsevier B.V. All rights reserved. |
| Peer review: | yes |
| URI: | http://hdl.handle.net/10773/20701 |
| DOI: | 10.1016/j.optmat.2013.08.028 |
| ISSN: | 0925-3467 |
| Versão do Editor: | 10.1016/j.optmat.2013.08.028 |
| Aparece nas coleções: | CICECO - Artigos |
Ficheiros deste registo:
| Ficheiro | Descrição | Tamanho | Formato | |
|---|---|---|---|---|
| Luminescence study of mixed valence Eu-doped nanocrystalline glass-ceramics_10.1016j.optmat.2013.08.028.pdf | 1.01 MB | Adobe PDF |  |
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