用微波高温固相法合成了Er3+单掺Lu2O3, Li+与Er3+共掺Lu2O3及Li+, Zn2+, Mg2+掺杂Lu2O3∶Er3+的荧光粉。实验表明金属离子Li+、Zn2+、Mg2+、Er3+掺杂Lu2O3, 不影响Lu2O3的立方晶相。扫描电子显微镜测量表明, Li+掺杂可以有效改善粉体的分散性和形貌, Li+, Zn2+, Mg2+共掺杂获得的粉体颗粒分布更加均匀, 粒径范围为80~100 nm。379 nm激发下, Li+与Er3+共掺样品发光较单掺Er3+样品在565 nm处的发光增强了45倍, 而Li+、Zn2+、Mg2+与Er3+共掺样品较其发光增强53倍。980 nm激发下, Li+与Er3+共掺样品, Li+、Zn2+、Mg2+与Er3+共掺样品的发光分别比单掺Er3+样品在565 nm处发光增强23倍与39倍, 在662 nm处发光强度分别增强20倍与43倍。379 nm激发下, 较单掺Er3+的样品, 掺杂Li+的样品和Li+, Zn2+, Mg2+和Er3+共掺的样品荧光寿命均有所增加, 而Zn2+、Er3+共掺及Mg2+、Er3+共掺样品的荧光寿命则有所缩短。

Li+, Zn2+, Mg2+, Er3+ doped Lu2O3 phosphors were synthesized using the microwave heating high temperature solid state method. The experimental results indicate that doping with Li+, Zn2+, Mg2+ and Er3+ will not affect the cubic phase of Lu2O3. SEM measurements show that Li+ doping can effectively improve the dispersibility and morphology of the sample powder, and the powder particle size distribution obtained by the co-doping of Li+, Zn2+ and Mg2+ are more uniform with a particle size of 80-100 nm. The excitation spectra, emission spectra and the fluorescence lifetime of the samples were detected and analyzed using a fluorescence spectrophotometer. The results showed that under 379 nm excitation, the luminescence intensities of samples doped with 5%Li+ and 2%Er3+, and that of samples doped with 5%Li+, 25%Zn2+, 25%Mg2+ and 2%Er3+ increased by 45 and 53 times than that of the sample only doped with Er3+ ions at 565 nm. Under 980 nm excitation, the up-conversion luminescence intensities of samples doped with 5%Li+ and 2%Er3+, and that of samples doped with 5%Li+, 25%Zn2+, 25%Mg2+ and 2%Er3+ increased by 23 and 39 times than that of samples doped only with Er3+ ions at 565 nm. This increased by 20 and 43 times at 662 nm. Under 379 nm excitation, the lifetime of the samples doped with Li+ was longer than that without Li+. The lifetime of the samples co-doped with Li+, Zn2+, Mg2+ and Er3+ increased, while the lifetime of the samples co-doping of Zn2+, Er3+ and Mg2+, Er3+ decreased.