Synthesis and photoluminescence properties of new NaAlSiO4:Eu2+ phosphors for near-UV white LED applications

A new NaAlSiO4: 0.1Eu2+ phosphors were synthesized at different temperatures using a liquid phase precursor (LPP) technique. The XRD patterns indicate the presence of hexagonal nepheline phase for all the samples. The synthesized phosphors can be excited efficiently in the broad near-UV region. The...

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Bibliographic Details
Published in:Optical materials 2012-02, Vol.34 (4), p.696-699
Main Authors: Jo, Deok Su, Luo, YuanYuan, Senthil, Karuppanan, Toda, Kenji, Kim, Bong Sung, Masaki, Takaki, Yoon, Dae Ho
Format: Article
Language:English
Subjects:
Emission
Emission spectra
Nepheline
Phosphors
Precursors
Synthesis
YAG
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Summary:A new NaAlSiO4: 0.1Eu2+ phosphors were synthesized at different temperatures using a liquid phase precursor (LPP) technique. The XRD patterns indicate the presence of hexagonal nepheline phase for all the samples. The synthesized phosphors can be excited efficiently in the broad near-UV region. The PL emission spectra showed a broad emission peak at around 551 nm corresponding to 5d arrow right 4f transition of Eu2+ ions. The synthesized phosphors showed better thermal stability when compared with the standard YAG: Ce3+ phosphor.
ISSN:0925-3467
DOI:10.1016/j.optmat.2011.10.004