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Investigation on luminescence properties of Eu 2+ ‐doped Ba 3 Al 2 O 5 Cl 2 phosphor for near‐UV‐excited white LEDs
Author(s) -
Pawade V. B.,
Dhoble S. J.
Publication year - 2012
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.1372
Subject(s) - phosphor , excited state , luminescence , doping , analytical chemistry (journal) , materials science , ion , emission spectrum , chemistry , spectral line , optoelectronics , physics , atomic physics , organic chemistry , chromatography , astronomy
Ba 3 Al 2 O 5 Cl 2 :Eu 2+ phosphor was prepared by combustion synthesis (CS). The prepared phosphor was excited at 329 nm; the phosphors shows an efficient bluish‐green wide‐band emission centred at 490 nm, which originates from the 4f 6 d 1 → 4f 7 transition of Eu 2+ ions. The excitation spectra of the phosphors have a band centred at 329 nm. It was also characterized by XRD, FT–IR for confirmation of phase purity, and FT–IR analysis indicated the vibrations of metal–oxygen (M–O) groups. SEM shows the morphology of the phosphor at the submicron scale. The results indicate that Ba 3 Al 2 O 5 Cl 2 :Eu 2+ phosphor may be applicable for solid‐state lighting purposes. Copyright © 2012 John Wiley & Sons, Ltd.