Luminescent Properties and Mechanism of Gd1-x-yAlO3Eux,REy
LUO Lan1,2, LIU Qing-Feng2, LIU Qian2
1School of Material Science and Engineering, Nanchang University, Nanchang 330047
2State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050
Luminescent Properties and Mechanism of Gd1-x-yAlO3Eux,REy
LUO Lan1,2;LIU Qing-Feng2;LIU Qian2
1School of Material Science and Engineering, Nanchang University, Nanchang 330047
2State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050
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.
LUO Lan;LIU Qing-Feng;LIU Qian. Luminescent Properties and Mechanism of Gd1-x-yAlO3Eux,REy[J]. 中国物理快报, 2005, 22(1): 131-134.
LUO Lan, LIU Qing-Feng, LIU Qian. Luminescent Properties and Mechanism of Gd1-x-yAlO3Eux,REy. Chin. Phys. Lett., 2005, 22(1): 131-134.
2005, Vol. 22 
