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8376136 
Journal Article 
Cathodoluminescence properties of Tb3+-doped Na3YSi2O7 phosphors 
Zhao, W; An, S; Fan, Bin; Li, S; , 
2013 
Yes 
Applied Physics A
ISSN: 0947-8396
EISSN: 1432-0630 
SPRINGER 
NEW YORK 
601-604 
WOS:000319064800038 
Tb3+-doped Na3YSi2O7 phosphors were prepared by the sol-gel method and then characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy, and cathodoluminescence spectroscopy. The XRD results reveal that the Tb3+ ions have been introduced as dopants into the Na3YSi2O7 host lattice. Under low-voltage electron beam excitation, the phosphors exhibit the characteristic emissions of Tb3+ (D-5(3,4) -> F-7(J), J = 3-6 transitions). The luminescence color of the phosphors can be tuned from greenish-blue to bluish-green and to green by controlling the Tb3+ concentration within the 0.0005-0.15 (x value). The optimum Tb3+ doping concentration is 10 mol%, and the "dead voltage" is approximately 1.35 kV. All results indicate that the sample is a phosphor candidate for field-emission displays.