Upconversion luminescence in Er-doped γ -AlON ceramic phosphors

γ -AlON : Er 3 + phosphors with different Er 3 + concentration for upconversion luminescence were prepared by a combination of carbothermal reduction and nitridation and solid-state synthesis methods. The effect of Er 3 + content on emission spectra was investigated. Under the excitation of 980 nm d...

Full description

Saved in:
Bibliographic Details
Published in:Journal of applied physics 2009-05, Vol.105 (9), p.093542-093542-4
Main Authors: Zhang, F., Wang, S. W., Liu, X. J., An, L. Q., Yuan, X. Y.
Format: Article
Language:English
Subjects:
ALUMINIUM COMPOUNDS
CERAMICS
CHARGED PARTICLES
CHEMICAL REACTIONS
DOPED MATERIALS
ELEMENTS
EMISSION
EMISSION SPECTRA
ENERGY-LEVEL TRANSITIONS
ERBIUM
ERBIUM IONS
EXCITATION
IONS
LASERS
LUMINESCENCE
MATERIALS
MATERIALS SCIENCE
METALS
MULTI-PHOTON PROCESSES
NITRIDATION
PHOSPHORS
PHOTOLUMINESCENCE
PHOTON EMISSION
RARE EARTHS
SPECTRA
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:γ -AlON : Er 3 + phosphors with different Er 3 + concentration for upconversion luminescence were prepared by a combination of carbothermal reduction and nitridation and solid-state synthesis methods. The effect of Er 3 + content on emission spectra was investigated. Under the excitation of 980 nm diode laser, green emission centered at 548 nm and red emission centered at 666 nm were observed, which are ascribed to the transition of S 4 3 / 2 / H 2 11 / 2 → I 4 15 / 2 and F 4 9 / 2 → I 4 15 / 2 of Er 3 + ions, respectively. The pump power dependence indicates a two-photon process involved in the upconversion luminescence. The ratio of red emission relative to green emission was enhanced with the increase in Er 3 + concentration. The possible mechanisms were discussed.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.3125516