关键词: 溶胶-凝胶法, 蓝色荧光粉, 发光特性, 稀土, 柠檬酸

Abstract: The Eu²⁺-doped BaMgAl10O17 blue-emitting phosphors were prepared by sol-gel technique using citric acid as a complextant. FT-IR, TG-DSC and X-ray diffraction (XRD) were used to characterize the composition of dry gel, the pyrogenic characteristic and relevant crystallization behavior. The luminescent effect of the phosphor was discussed by way of excitation and emission spectral analysis. The results revealed that BaMgAl10O17:Eu²⁺ is crystallized well when the dry gel was sintered at 1200°C, which the temperature of phosphors can be prepared lower 200°C than by way of solid-state method. When the phosphor is excited within UV waveband, wavelengths of maximum excitation and emission are 340 nm, 454 nm, and those are 160 nm and 453 nm within VUV waveband, respectively.