Issue 30, 2012
From the journal:

Journal of Materials Chemistry

Ca2Al3O6F:Eu2+: a green-emitting oxyfluoride phosphor for white light-emitting diodes

Zhiguo Xia,*a   Ru-Shi Liu,*b   Kuan-Wei Huangb  and  Vadym Drozdbc  

* Corresponding authors

a School of Materials Sciences and Technology, China University of Geosciences, Beijing 100083, China
E-mail: xiazg426@yahoo.com.cn

b Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
E-mail: rsliu@ntu.edu.tw

c Center for the Study of Matter at Extreme Conditions, Florida International University, Miami, FL 33199, USA

Abstract

A novel green-emitting phosphor Ca2Al3O6F:Eu2+ was synthesized and its photoluminescence (PL) properties were investigated for application in white light-emitting diodes (w-LEDs). This phosphor shows good absorption ranging from the ultraviolet to the blue region and a broad green emission band centered at 502 nm. The concentration quenching mechanism and fluorescence lifetime of Eu2+ emission in the Ca2Al3O6F:Eu2+ phosphors have been investigated. The key parameters for the fabrication of w-LED lamps, such as the temperature-dependent photoluminescence, microstructure and morphology, CIE value and quantum efficiency of Ca2Al3O6F:Eu2+ phosphors, have also been studied. The above results indicate that Ca2Al3O6F:Eu2+ is a good candidate as a green component for near UV-excited w-LEDs.

Graphical abstract: Ca2Al3O6F:Eu2+: a green-emitting oxyfluoride phosphor for white light-emitting diodes

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Article information

DOI
https://doi.org/10.1039/C2JM32733C
Article type
Paper
Submitted
01 May 2012
Accepted
31 May 2012
First published
01 Jun 2012

J. Mater. Chem., 2012,22, 15183-15189

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Ca2Al3O6F:Eu2+: a green-emitting oxyfluoride phosphor for white light-emitting diodes

Z. Xia, R. Liu, K. Huang and V. Drozd, J. Mater. Chem., 2012, 22, 15183 DOI: 10.1039/C2JM32733C

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