کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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846526 | 909207 | 2016 | 5 صفحه PDF | دانلود رایگان |
Novel blue and green emitting BaAl2SiO6 phosphors doped with Eu2+, Ce3+ and Tb3+ has been synthesized via combustion method at 550 °C. BaAl2SiO6:Eu2+ phosphor shows emission band at 450 nm, under 337 nm excitation wavelengths. Whereas BaAl2SiO6:Ce3+ phosphor shows emission at 426 nm, keeping excitation constant at 325 nm. The broad band emission of Eu2+ and Ce3+ ions was observed due to 5d–4f transition of rare earth ions. Tb3+ activated BaAl2SiO6 phosphors shows emission bands at 544 nm, 551 nm under mercury excitation at 240 nm respectively. The excitation bands extend from 220 to 270 nm which is assigned to the interconfiguration 4f8–4f75d1 transition of Tb3+ ion. XRD and SEM characterization were carried out to study phase purity and surface morphology of the phosphor powder.
Journal: Optik - International Journal for Light and Electron Optics - Volume 127, Issue 4, February 2016, Pages 1703–1707