Cerium-europium double activated terbium aluminum garnet phosphor for led application

Cerium-europium double activated terbium aluminum garnet phosphor for led application

Y3Al5O12:Ce3 (YAG:Ce) and Tb3Al5O12:Ce3 (TAG:Ce) both show the typical Ce3 ion luminescence of the allowed Ce3 d–f transition. Eu3 codoping, however, reveals different results for both matrices: in YAG:Ce, Eu only the luminescence of the Ce3 ion occurs by excitation within the Ce3 a...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autor principal: Nazarov, Mihail
Formato: article
Lenguaje:EN
Publicado: D.Ghitu Institute of Electronic Engineering and Nanotechnologies 2006
Materias:
Physics
QC1-999
Electronics
TK7800-8360
Acceso en línea:https://doaj.org/article/637680aed37d4ffe80cb696f2ae62faa
Etiquetas: Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
id oai:doaj.org-article:637680aed37d4ffe80cb696f2ae62faa
record_format dspace
spelling oai:doaj.org-article:637680aed37d4ffe80cb696f2ae62faa2021-11-21T12:09:15ZCerium-europium double activated terbium aluminum garnet phosphor for led application 2537-63651810-648Xhttps://doaj.org/article/637680aed37d4ffe80cb696f2ae62faa2006-12-01T00:00:00Zhttps://mjps.nanotech.md/archive/2006/article/3606https://doaj.org/toc/1810-648Xhttps://doaj.org/toc/2537-6365Y3Al5O12:Ce3 (YAG:Ce) and Tb3Al5O12:Ce3 (TAG:Ce) both show the typical Ce3 ion luminescence of the allowed Ce3 d–f transition. Eu3 codoping, however, reveals different results for both matrices: in YAG:Ce, Eu only the luminescence of the Ce3 ion occurs by excitation within the Ce3 absorption bands, because the Eu3 luminescence cannot be sensitized by the Ce3 ion. In TAG:Ce, Eu, both Ce3 and Eu3 luminescence was measured at different Ce and Eu activator concentrations. It is not surprising as an energy transfer from Tb3 to Ce3 and Eu3 is well known in literature. In addition, an excitation in the lowest 5d level of Ce 3 delivers Eu3 luminescence at room temperature. This means that the Ce3 ion can be used as a sensitizer in the TAG lattice that transfers its energy via the Tb sublattice to the activator Eu3 . Application of TAG:Ce, Eu with improved CRI in LED device is demonstrated. Nazarov, MihailD.Ghitu Institute of Electronic Engineering and NanotechnologiesarticlePhysicsQC1-999ElectronicsTK7800-8360ENMoldavian Journal of the Physical Sciences, Vol 5, Iss 3-4, Pp 366-372 (2006)
institution DOAJ
collection DOAJ
language EN
topic Physics
QC1-999
Electronics
TK7800-8360
spellingShingle Physics
QC1-999
Electronics
TK7800-8360
Nazarov, Mihail
Cerium-europium double activated terbium aluminum garnet phosphor for led application
description Y3Al5O12:Ce3 (YAG:Ce) and Tb3Al5O12:Ce3 (TAG:Ce) both show the typical Ce3 ion luminescence of the allowed Ce3 d–f transition. Eu3 codoping, however, reveals different results for both matrices: in YAG:Ce, Eu only the luminescence of the Ce3 ion occurs by excitation within the Ce3 absorption bands, because the Eu3 luminescence cannot be sensitized by the Ce3 ion. In TAG:Ce, Eu, both Ce3 and Eu3 luminescence was measured at different Ce and Eu activator concentrations. It is not surprising as an energy transfer from Tb3 to Ce3 and Eu3 is well known in literature. In addition, an excitation in the lowest 5d level of Ce 3 delivers Eu3 luminescence at room temperature. This means that the Ce3 ion can be used as a sensitizer in the TAG lattice that transfers its energy via the Tb sublattice to the activator Eu3 . Application of TAG:Ce, Eu with improved CRI in LED device is demonstrated.
format article
author Nazarov, Mihail
author_facet Nazarov, Mihail
author_sort Nazarov, Mihail
title Cerium-europium double activated terbium aluminum garnet phosphor for led application
title_short Cerium-europium double activated terbium aluminum garnet phosphor for led application
title_full Cerium-europium double activated terbium aluminum garnet phosphor for led application
title_fullStr Cerium-europium double activated terbium aluminum garnet phosphor for led application
title_full_unstemmed Cerium-europium double activated terbium aluminum garnet phosphor for led application
title_sort cerium-europium double activated terbium aluminum garnet phosphor for led application
publisher D.Ghitu Institute of Electronic Engineering and Nanotechnologies
publishDate 2006
url https://doaj.org/article/637680aed37d4ffe80cb696f2ae62faa
work_keys_str_mv AT nazarovmihail ceriumeuropiumdoubleactivatedterbiumaluminumgarnetphosphorforledapplication
_version_ 1718419189385920512

Ejemplares similares