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Erschienen in:
28.08.2015
Luminescent characterization of Eu2+ doped BaMAl10O17 (M = Ca/Mg or both) blue nanophosphors for white light emitting applications
Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 12/2015
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Abstract
Eu2+ activated barium magnesium aluminate nanophosphors (BaMAl10O17 where M = Ca/Mg or both) were synthesized via a modified rapid gel combustion technique using borax as a flux. The morphology and phase structure of the products were characterized by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. The structural identification of products was confirmed by fourier transform infrared analysis. The photoluminescence spectra showed the broad emission peaks centered at ~453 nm after excitation at 360 nm, emitting a blue light corresponding to a 4f65d1 → 4f7 transition of the Eu2+ ion. Effect of addition of calcium and magnesium into the lattice of the BaMAl10O17:Eu2+ phosphor and their consequence on photoluminescence properties were also investigated. These prepared nanophosphors had excellent blue emissive properties that could be suitably used for the efficient white light emitting applications.