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BaAl12O19:Tb,Ce phosphors were prepared by sol-gel technique,the crystalline structures of samples characterized by XRD,and the luminescence properties and energy transfer between Ce3+ and Tb3+ were investigated.The results indicated that the emission intensity and the excitation wavelength range of Tb3+ increased when Ce3+ was doped.It demonstrated that the Ce3+ added in the BaAl12O19:Tb could deliver energy to Tb3+,and Ce3+ was not luminous by itself.The relative emission intensity of Tb3+ at wavelength of 548 nm was the strongest by Tb3+/Ce3+ ratio of 2:1,when excited at 310 nm,which was the characteristic adsorption wavelength of Ce3+.
BaAl12O19: Tb, Ce phosphors were prepared by sol-gel technique, the crystalline structures of samples characterized by XRD, and the luminescence properties and energy transfer between Ce3 + and Tb3 + were investigated. The results indicated that the emission intensity and the excitation wavelength range of Tb3 + increased when Ce3 + was doped. If the Ce3 + added in the BaAl12O19: Tb could deliver energy to Tb3 +, and Ce3 + was not luminous by itself. The relative emission intensity of Tb3 + at 548 nm was the strongest by Tb3 + / Ce3 + ratio of 2: 1, when excited at 310 nm, which was the characteristic adsorption wavelength of Ce3 +.