Issue 1, 2012
From the journal:

New Journal of Chemistry

A tunable warm-white-light Sr3Gd(PO4)3:Eu2+,Mn2+ phosphor system for LED-based solid-state lighting†

Ning Guo,ab   Yuhua Zheng,ab   Yongchao Jia,ab   Hui Qiaoab  and  Hongpeng You*a  

* Corresponding authors

a State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
E-mail: hpyou@ciac.jl.cn

b Graduate University of the Chinese Academy of Sciences, Beijing 100049, P. R. China

Abstract

A novel tunable full-color-emitting Sr3Gd(PO4)3:Eu2+,Mn2+ phosphor system was successfully developed. Its excitation wavelength ranging from 230 to 450 nm fits well with the characteristic emission of UV light-emitting diode (LED) chips. The color emission of these phosphors can be tuned across almost the entire visible light spectrum resulting in white light emission with varied hue and correlated color temperature (CCT) by varying the molar ratios of Eu2+ and Mn2+. Moreover, the efficient energy transfer from Eu2+ to Mn2+ was demonstrated via a dipole–quadrupole mechanism by the luminescence spectra and the fluorescence decay dynamics based on the Inokuti–Hirayama theoretical model. These results indicate that the developed phosphor may be promising as a single-component white-light-emitting phosphor for white LEDs.

Graphical abstract: A tunable warm-white-light Sr3Gd(PO4)3:Eu2+,Mn2+ phosphor system for LED-based solid-state lighting

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Article information

DOI
https://doi.org/10.1039/C1NJ20532C
Article type
Paper
Submitted
17 Jun 2011
Accepted
03 Nov 2011
First published
17 Nov 2011

New J. Chem., 2012,36, 168-172

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A tunable warm-white-light Sr3Gd(PO4)3:Eu2+,Mn2+ phosphor system for LED-based solid-state lighting

N. Guo, Y. Zheng, Y. Jia, H. Qiao and H. You, New J. Chem., 2012, 36, 168 DOI: 10.1039/C1NJ20532C

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