Hydrothermal Preparation and Luminescence Properties of NaGd(MoO4)2: Dy3+,Eu3+ White-light Phosphors

doi:10.7503/cjcu20120662

Abstract

Abstract:

Dy, Eu co-doped NaGd(MoO₄)₂ white-light phosphors were prepared by a simple glutamic acid-assisted hydrothermal method. X-Ray diffraction(XRD) patterns show that the samples are tetragonal phase NaGd(MoO₄)₂. Scanning electron microscopy(SEM) images show that the as-prepared particles have an octagonal shape with each side length of about 2 μm. In the fluorescence spectra of NaGd(MoO₄)₂: Dy,Eu, it is found that the emission intensity of Eu³⁺ increased and the emission intensity of Dy³⁺ decreased with increasing the amount of Eu³⁺ and maintaining the concentration of Dy³⁺. The energy transmission of Dy³⁺-Eu³⁺ is observed. From Commission Internationale de L'Eclairage(CIE) chromaticity diagram, it is noted that white light can be achieved in NaGd(MoO₄)₂: 4%Dy³⁺,0.9%Eu³⁺ phosphor, the CIE color coordinates(0.338, 0.281) are near to the standard color coordinates(0.33, 0.33).

Key words: NaGd(MoO₄)₂: Dy³⁺,Eu³⁺, Luminescent material, White light, Hydrothermal preparation

CLC Number:

O614.33

TrendMD:

JIANG Ying-Ying, LIU Gui-Xia, WANG Jin-Xian, DONG Xiang-Ting, YU Wen-Sheng. Hydrothermal Preparation and Luminescence Properties of NaGd(MoO₄)₂: Dy³⁺,Eu³⁺ White-light Phosphors[J]. Chem. J. Chinese Universities, 2013, 34(4): 794.

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Hydrothermal Preparation and Luminescence Properties of NaGd(MoO₄)₂: Dy³⁺,Eu³⁺ White-light Phosphors

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