کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1787756 | 1023452 | 2011 | 5 صفحه PDF | دانلود رایگان |
Tb3+-doped porous LiAl5O8 nanophosphors were successfully synthesized using a single step combustion method. Structural characterization of the luminescent material was carried out with X-ray diffraction (XRD) analysis and high resolution transmission electron microscopy (HRTEM). Surface composition was estimated from X-ray photoelectron and Auger spectroscopic techniques. The average particle size was estimated as 37 ± 3 nm. Luminescence properties were studied by the photoluminescence spectroscopy. The phosphor showed intense luminescence in the green region due to the magnetic dipole transition of 5D4→7F5 of the Tb3+ ion at 543 nm under 241 nm excitation. The intense 4f–4f transitions of Tb3+ outshine the luminescence from host which would otherwise deteriorate the color quality of the display device under operation.
Journal: Current Applied Physics - Volume 11, Issue 3, May 2011, Pages 341–345