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Search for new red phosphors under NUV/blue excitation - the stimulating future for solid state lighting
Published in
2008
Volume: 8
   
Pages: 1350 - 1352
Abstract
Research on down conversion phosphor materials is the key for the development of solid state lighting (SSL). Especially finding alternative red phosphor for white LEDs based on Blue or NUV LEDs are important research task. In this view, we have synthesized a series of Eu substituted La 2W2-xMoxO9 (x = 0 - 2, insteps of 0.1) red phosphor and characterized by X-ray diffraction (XRD) and photoluminescence. XRD results reveal a phase transition from triclinic to cubic structure for x >= 0. All the compositions show broad charge transfer band due to oxygen to tungsten/molybdenum and red emission due to Eu3+ ions. Select compositions show high red emission intensity compare to the commercial red phosphor under NUV/blue ray excitation. Hence, this candidate can be possible red phosphors for white LEDs.
About the journal
JournalProceedings of International Meeting on Information Display
ISSN17387558