Yu Hongquan, Zheng Hui, Li Yue, Wang Hongdan, Wu Yanbo, Li Peng
J Nanosci Nanotechnol. 2014 May;14(5):3648-52. doi: 10.1166/jnn.2014.8031.
Y2O3:Eu3+ nanocrystals were prepared by ultrasonic chemistry and characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The resulting nanocrystals were found to be nanoparticles with size distribution in the range of 50-80 nm. The phase of all the samples was cubic. The luminescence properties of the samples were systematically studied and show significant change with concentration of surfactant and annealing temperature. The results show that the intensity of the excitation and emission spectra of Y2O3:Eu3+ nanocrytals increases gradually with increasing P123 concentration and annealing temperature. The fluorescence lifetime of 5D0 level Eu3+ decreases with increasing P123 concentration and increases with annealing temperature. The photoluminescence stability of Y2O3:Eu3+ nanocrytals becomes worse with increasing P123 concentration and annealing temperature.
采用超声化学法制备了Y2O3:Eu3+纳米晶体，并通过扫描电子显微镜（SEM）和X射线衍射（XRD）对其进行了表征。结果发现，所得纳米晶体为尺寸分布在50-80nm范围内的纳米颗粒。所有样品的相均为立方相。系统研究了样品的发光性能，结果表明，其随表面活性剂浓度和退火温度的变化而有显著变化。结果表明，Y2O3:Eu3+纳米晶体的激发光谱和发射光谱强度随P123浓度和退火温度的升高而逐渐增加。Eu3+的5D0能级荧光寿命随P123浓度的增加而降低，随退火温度的升高而增加。Y2O3:Eu3+纳米晶体的光致发光稳定性随P123浓度和退火温度的升高而变差。
