Size dependence of Eu–O charge transfer process on luminescence characteristics of YBO_3:Eu^3+ nanocrystals (original) (raw)
Well crystallized pure hexagonal phase YBO 3 :Eu 3+ nanoparticles were prepared by reverse micelles method. The vacuum ultraviolet photoluminescence (VUVPL) spectroscopy showed size dependent nonlinear luminescence enhancement with remarkably improved chromaticity (0.62, 0.34), as compared to the commercial bulk YBO 3 :Eu 3+ phosphor (0.56, 0.39). The quenching concentration of Eu 3+ doping and the ratio of red (5 D 0 7 F 2) to orange (5 D 0 7 F 1) emission was found significantly enhanced
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