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- W2393074006 abstract "The green-emitting phosphor12∶Tb are usually used for projection TV, but the degradation of the phosphors under the high-power electron-beam irradiation is too rapid resulted in short lifetime. For this reason, Y3(Al,Ga)5·O12∶Tb phosphors containing a trace of Eu3+or Yb3+ions were prepared by solid-state reaction. The raw materials mixture obtained by wet method was fired many times at 1 300—1 600 ℃ and annealed to room temperature at reducing atmosphere. An introduction of Eu or Yb ions to Y3(Al,Ga)5O12∶Tb phosphors is found to be an effective means to prevent the degradation of the phosphor under the high-power electron-beam irradiation. The analyses on the result indicates that trap states formed by the doping compete with intrinsic lattice defects in capturing free electrons, resulting in the decrease in number of the electrons trapped in the color centers. An introduction of Eu ions is more effective than that of Yb ions. The effective means to prevent the degradation of the phosphor are reported." @default.
- W2393074006 created "2016-06-24" @default.
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- W2393074006 date "2004-01-01" @default.
- W2393074006 modified "2023-09-24" @default.
- W2393074006 title "STUDY ON ANTI-AGEING OF Y_3(Al,Ga)_5O_(12):Tb GREEN PHOSPHOR MATERIAL FOR PROJECTION TELEVISION" @default.
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