volume 146, issue 1-3, P84-88 2008
DOI: 10.1016/j.mseb.2007.07.048
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Abstract: The effects of the firing conditions, a flux, and doping concentrations on the phase transformations of CaO-Al 2 O 3 -Eu 2 O 3 systems and luminescent properties were investigated. Depending on the amount of H 3 BO 3 and firing conditions, three phases of Ca 12 Al 14 O 33 , CaAl 2 O 4 , and CaAl 4 O 7 were observed. Both Ca 12 Al 14 O 33 and CaAl 4 O 7 phases did not contributed to the emissions. A single phase CaAl 2 O 4 showed a blue emission at 440 nm with 330 nm excitation. Europium concentrations more th…

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