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A novel Ba2MgMoO6:Eu3+ orange-red phosphor: Photoluminescence properties and mechanism of charge and energy transfer

Published online by Cambridge University Press:  29 October 2013

Shaoan Zhang ,
Yihua Hu ,
Li Chen ,
Xiaojuan Wang ,
Guifang Ju  and
Yan Fan
Shaoan Zhang
Affiliation:
School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, People's Republic of China
Yihua Hu*
Affiliation:
School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, People's Republic of China
Li Chen
Affiliation:
School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, People's Republic of China
Xiaojuan Wang
Affiliation:
School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, People's Republic of China
Guifang Ju
Affiliation:
School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, People's Republic of China
Yan Fan
Affiliation:
School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, People's Republic of China
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

A novel Ba2MgMoO6:Eu3+ orange-red phosphor was synthesized by the Pechini method and characterized by x-ray diffraction. Photoluminescence properties of BaMgMoO6:Eu3+ phosphors have been represented in the excitation and emission spectra. The charge transfer (CT) band of Ba2MgMoO6 host is situated at near-ultraviolet (UV) region, whose central wave length and bandwidth are 394 and 80 nm, respectively. And it matches well the emission wave length from near-UV light emitting diodes (LEDs). The most intensive emission of 5D0 → 7F1 (598 nm) of Eu3+ in Ba2MgMoO6:Eu3+ is much narrow with a full width at half-maximum less than 2 nm under excitation with either CT band or 394 nm. And a low concentration quenching occurs in Ba2MgMoO6:Eu3+, and the optimal doping concentration is about 0.05. The mechanism of charge and energy transfer from Ba2MgMoO6 host to Eu3+ is proposed and analyzed on the basis of its crystal structure. In a word, Ba2MgMoO6:Eu3+ may be a promising orange-red component for near UV white LEDs.

Keywords

photoluminescence propertiescharge and energy transfernear-UV light excitation
Type
Articles
Information
Journal of Materials Research , Volume 28 , Issue 22 , 28 November 2013 , pp. 3130 - 3136
Copyright
Copyright © Materials Research Society 2013 

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