采用溶胶凝胶法合成了CaY_1-x-yAlO₄∶xCe ³⁺, yTb ³⁺荧光粉,探讨了稀土离子Ce ³⁺、Tb ³⁺单掺及共掺对样品发光性能的影响。研究结果表明,合成的样品为四方晶系的纯相。在368 nm光激发下,CaY_1-xAlO₄∶xCe ³⁺发射蓝光,发射峰位于445 nm附近;在246 nm光激发下,CaY_1-yAlO₄∶yTb ³⁺发射绿光,发射峰位于418,440,491,548,589,625 nm附近。在Ce ³⁺/Tb ³⁺共掺荧光粉中,Ce ³⁺的能量可传递给Tb ³⁺,使Tb ³⁺的发光增强;当用368 nm或378 nm光激发共掺荧光粉时,Tb ³⁺呈现强烈的绿光发射。调整Ce ³⁺与Tb ³⁺的掺杂浓度可以调整对应的蓝光与绿光的发射强度。

CaY1-x-yAlO4∶xCe 3+, yTb 3+ phosphors are synthesized by the sol-gel method. The effects of single-doped Ce 3+ or Tb 3+ rare earth ions and their co-doping on the luminescence properties of the phosphors are discussed. The results show that the synthesized phosphors are pure samples with the tetragonal structure. The CaY1-xAlO4∶xCe 3+ phosphors emit blue light peaking at around 445 nm under an excitation wavelength of 368 nm. The CaY1-yAlO4∶yTb 3+ phosphors emit green light peaking at 418, 440, 491, 548, 589, and 625 nm under an excitation wavelength of 246 nm. In Ce 3+/Tb 3+ co-doped phosphors, the energy transfers from Ce 3+ to Tb 3+, which makes the luminescence of Tb 3+ enhanced. When the Ce 3+ and Tb 3+ co-doped phosphors are under an excitation wavelength of 368 nm or 378 nm, Tb 3+ emits a strong green light. The intensities of blue and green lights can be tuned by adjusting the doping concentrations of Ce 3+ and Tb 3+.