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Blue-emitting phosphor M(2)B(5)O(9)Cl Eu(2+) (M=Sr, Ca) for white LEDs

Author:
Guo, Chongfeng  Xu, Yan  Ding, Xu  Li, Ming  Yu, Jie  Ren, Zhaoyu  Bai, Jintao  


Journal:
JOURNAL OF ALLOYS AND COMPOUNDS


Issue Date:
2011


Abstract(summary):

Eu(2+) doped M(2)B(5)O(9)Cl(M=Ca Sr) phosphors were prepared by a solid-state reaction method Luminescent properties of as-synthesized phosphors were investigated under the excitation of near-ultraviolet (n-UV) light Photoluminescence (PL) spectra revealed a blue emission band and the emission band shifted to a longer wavelength region as Ca(2+) substituted Sr(2+) The photoluminescence excitation (PLE) spectra of M(2)B(5)O(9)Cl Eu(2+) (M=Ca Sr) showed broadband absorptions in the n-UV region Moreover the as-prepared phosphors were also compared with commercial BaMgAl(10)O(17) Eu(2+) (BAM) blue phosphor The present phosphors showed a narrower full width at half-maximum and higher PL intensity than the reference BAM under the n-UV light excitation (C) 2010 Elsevier B V All rights reserved


Page:
L38---L41


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