Luminescent Properties and Mechanism of Gd1-x-yAlO3Eux,REy
-
Abstract
GAP:Eu,Re(Gd1-x-yAlO3Eux,REy, RE=Pr or Ce) powders were prepared by a nitrate--citrate process. It is found that luminescent intensity decreases when GAP:Eu is co-doped with Pr or Ce. The phenomena of spectra prove that there is a resonant energy transfer between Eu and Pr, by the absorption and emission of lower-energy phonon, and also Ce sensitizer decreases the activator energy level from host→Eu. The two factors are considered to be the main reasons for decrease of the luminescent intensity for the co-doped GAP:Eu,Re.
Article Text
-
-
-
About This Article