• Journal of the Korea Institute of Information and Communication Engineering
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• v.11 no.4
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• pp.754-759
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• 2007

Field emission displays (FED) are currently being explored as a potential flat panel display technology. Specifically, the optimization pf efficient bin emitting phosphors in the $Y_2O_3-Nb_2O_5$ system and influence of particle size of phosphors on the luminescent properties was studied. Under 254 nm excitation, Bi activated $YNbO_4$ phosphors showed a strong and relatively narrow blue omission band, peaking at about 420-450 nm. Especially 0.4 wt% Bi doped yttrium phosphors showed the maximum emission intensity which is almost three times as much as that of $Y_2SiO_5:Ce$ phosphors. Finally, Ce doped $Y_2SiO_5$ phosphors exhibited strong and broad blue emission band, centered at 390-420 nm and maximum emission intensity at the doping concentration of 0.02-0.03 mol.