Issue 23, 2013
From the journal:

RSC Advances

Single-phased white-light-emitting KCaGd(PO4)2:Eu2+,Tb3+,Mn2+ phosphors for LED applications†

Wei-Ren Liu,*a   Chien-Hao Huang,b   Chiao-Wen Yeh,c   Yi-Chen Chiu,b   Yao-Tsung Yehb  and  Ru-Shi Liuc  

* Corresponding authors

a Department of Chemical Engineering, Chung Yuan Christian University, R&D Center for Membrane Technology, Chung Li, Taiwan, R.O.C
E-mail: WRLiu1203@gmail.com
Fax: +886-3-2654199
Tel: +886-3-2654140

b Material and Chemical Research Laboratories, ITRI, Hsichu, Taiwan 30011, R.O.C

c Department of Chemistry, National Taiwan University, Taipei 106, Taiwan, R.O.C

Abstract

Single-phased white light-emitting KCaGd(PO4)2:Eu2+,Tb3+,Mn2+ phosphors were synthesized by a solid state reaction. By changing the doping contents of Eu2+, Tb3+ and Mn2+, the emission hue could be precisely controlled via the energy transfer mechanism. The structure refinement, luminescence properties as well as their thermal quenching and energy transfer mechanism were firstly investigated. The mechanism of transferring energy between Eu2+, Mn2+ and Tb3+ ions was also discussed in this study. The optimal-composition for white-light is K(Ca0.89Eu0.01Mn0.1)(Gd0.9Tb0.1)(PO4)2, which gives the CIE coordinates of (0.2984, 0.3171). These results indicate that the KCaGd(PO4)2:Eu2+,Mn2+,Tb3+ phosphor could be a promising single-composition phosphor for applications involving white-light NUV LEDs.

Graphical abstract: Single-phased white-light-emitting KCaGd(PO4)2:Eu2+,Tb3+,Mn2+ phosphors for LED applications

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Article information

DOI
https://doi.org/10.1039/C3RA40471D
Article type
Paper
Submitted
26 Jan 2013
Accepted
02 Apr 2013
First published
04 Apr 2013

RSC Adv., 2013,3, 9023-9028

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Single-phased white-light-emitting KCaGd(PO4)2:Eu2+,Tb3+,Mn2+ phosphors for LED applications

W. Liu, C. Huang, C. Yeh, Y. Chiu, Y. Yeh and R. Liu, RSC Adv., 2013, 3, 9023 DOI: 10.1039/C3RA40471D

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