Luminescent Properties and Mechanism of Co-Doped GdAlO3 :RE

doi:10.7517/j.issn.1674-0475.2005.01.1

Imaging Science and Photochemistry ›› 2005, Vol. 23 ›› Issue (1): 1-5.DOI: 10.7517/j.issn.1674-0475.2005.01.1

Luminescent Properties and Mechanism of Co-Doped GdAlO₃ :RE

LUO Lan¹, LIU Qing-feng², LIU Qian²

1. School of Material Science and Engineering, Nanchang University, Nanchang 330047, Jiangxi, P. R. China;
2. State Key Lab of High Perf ormance Ceramics and Superfine Microstructure, Shang Chinese A cademy of Sciences, Shanghai 200050, P. R. China

Received:2004-06-21 Revised:2004-09-03 Online:2005-01-23 Published:2005-01-23

Abstract

Abstract: GdAlO₃:RE powder was prepared by nitric-citric process. Luminescent intensity of GdAlO₃:Eu decreased when it was co-doped with Pr, and GdAlO₃:Tb co-doped with Ce showed the same phenomenon. The results from excitation spectra indicated that there are the resonant energy transfer between Eu and Pr, Tb and Ce, by the absorption and emission of lower energy phonon. The resonant energy transfer between different RE species is one of main reasons why luminesent intensity decreasing.

Key words: gadolinium-aluminum perovskite, luminescence, energy transmission, citrate-nitrate combustion

CLC Number:

TB332

LUO Lan, LIU Qing-feng, LIU Qian. Luminescent Properties and Mechanism of Co-Doped GdAlO₃ :RE[J]. Imaging Science and Photochemistry, 2005, 23(1): 1-5.

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Luminescent Properties and Mechanism of Co-Doped GdAlO₃ :RE

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