Study on Luminescence Behavior of BaAl12O19:Tb, Eu
BaAl12O19:Tb, Eu phosphors were prepared by sol–gel technique. The luminescence properties and the energy transfer between Eu2+ and Tb3+ were investigated. For BaAl12O19:Tb phosphor, the strongest excitation peak and emission peak produced from Tb3+ transition of 5D4–7F5 were at 240 nm and at 550 nm respectively, while the peak shape was narrow and peak intensity was large. The Eu2+ added in the BaAl12O19:Tb induced energy transfer to Tb3+ and different color luminescence from blue (400 nm) to green (570 nm) was obtained by changing the ratio of Tb3+/Eu2+ with excitation at 240 nm.
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Document Type: Research Article
Publication date: 2011-11-01
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