English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/155047
COMPARTIR / IMPACTO:
Estadísticas
logo share SHARE   Add this article to your Mendeley library MendeleyBASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Título

Tunable performance of nanostructured Eu-doped oxide and oxynitride thin films

AutorCamps, I. ; Mariscal, A. ; Serna, Rosalía
Fecha de publicación5-jun-2016
CitaciónCIMTEC (2016)
ResumenRare earth (RE) doped materials are ideal candidates for the development of reliable emitters for integrated lighting devices. Silicon oxynitrides are compatible with the current silicon technology and show excellent optical properties including high transparency in the VIS-IR, and a tunable refractive index from that of SiO2 (1.45) to that of Si3N4 (2.01). Moreover, the inclusion of Al2O3 (1.67) to form SiAlON is advantageous providing further tuning of the optical properties and decreases the maximum phonon energy, which enhances RE-light emission efficiency. Some RE doped SiAlON have been studied as phosphors, however it have been seldom produced as thin films. We report the optical properties and emission performance of both a-Al2O3 and SiAlON thin films with nanostructured Eu doping. The Eu is distributed in the films forming well-defined doping layers with different interlayer spacing. It will be demonstrated that this nanometric distribution is essential to obtain either the 2+ or 3+ Eu oxidation state. Therefore, the film emission could be tuned from a broadband white emission characteristic from the superposition of the 5d levels to the 4f levels of the Eu2+, to a narrow and well-defined emission peaks characteristic of the 4f-4f transitions of the Eu3+.
Descripción5th International Conference on "Smart and Multifunctional Materials, Structures and Systems", Perugia, Italy, June 5-9, 2016 ; Session D-3 - Phosphors, Quantum Dots and Low Dimensional Materials for Lighting and Displays ; http://2016.cimtec-congress.org/
URIhttp://hdl.handle.net/10261/155047
Aparece en las colecciones: (CFMAC-IO) Comunicaciones congresos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
accesoRestringido.pdf15,38 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.