| Texto completo | |
| Autor(es): |
Freiria, Gabriela S.
;
Ribeiro, Amanda L.
;
Verelst, Marc
;
Nassar, Eduardo J.
;
Rocha, Lucas A.
Número total de Autores: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Journal of the Brazilian Chemical Society; v. 29, n. 3, p. 8-pg., 2018-03-01. |
| Resumo | |
In this study, Dy3+-doped LaNbO4 phosphors with a blue to white emission that can be tuned by varying the activator concentration were prepared by one-step spray pyrolysis process. According to the powder X-ray diffraction results, increasing Dy3+ concentration favored the tetragonal phase. Slight changes were observed in the recorded Raman spectra as a function of Dy3+ concentrations while SEM (scanning electron microscopy) micrographs presented similar profiles regardless the Dy3+ amount. Investigation of Dy3+ emission data in the visible range showed that rising the Dy3+ concentration progressively shifted the emission towards the white color. All samples presented a wide excitation range from 254 to 475 nm. (AU) | |
| Processo FAPESP: | 14/24658-8 - Obtenção de luminóforos RGB pelo processo de pirólise de aerossol |
| Beneficiário: | Gabriela Simões Freiria |
| Modalidade de apoio: | Bolsas no Brasil - Mestrado |
| Processo FAPESP: | 11/51858-0 - Estudo e caracterização de sistemas à base de óxido de nióbio a partir dos processos: sol-gel não-hidrolítico e pirólise de aerossol |
| Beneficiário: | Eduardo José Nassar |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 15/20298-0 - Obtenção de matrizes luminescentes de LaNbO4:Ln (Ln = Dy, TM, er e Yb) pelo processo de pirólise de aerossol |
| Beneficiário: | Lucas Alonso Rocha |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |