论文部分内容阅读
以稀土羧酸配合物为前驱体， 采用快速热分解方法制备了纳米Ｙ２Ｏ３∶Ｅｕ 荧光材料，进行了结构、尺寸及形貌表征． 随着Ｅｕ３＋ 掺杂浓度的提高， 样品的晶胞参数加大， 当Ｅｕ３＋掺杂量高达３０％ 时， 体系仍能保持Ｙ２Ｏ３ 基质的立方相结构； 样品的晶粒度与退火温度及配合物前驱体组成有关． 退火温度越高、前驱体中Ｒｅ３＋ 与配体的摩尔比越小， 样品的粒径越大． 随着Ｅｕ３＋ 掺杂浓度的提高， 激发光谱红移， 发射强度在掺杂浓度分别为５％ 和１０％ 时有极大值； 发射强度与Ｒｅ３＋ 和配体摩尔比及退火温度有关．
The rare earth carboxylate complexes as precursors, the rapid thermal decomposition of nano-Y2O3:Eu fluorescent materials were prepared, the structure, size and morphology were characterized. With the increase of Eu3 + doping concentration, the unit cell parameters of the sample increase. When the Eu3 + doping content is as high as 30%, the cubic phase structure of the Y2O3 matrix can be maintained. The grain size, annealing temperature and precursor Body composition. The higher the annealing temperature, the smaller the molar ratio of Re3 + to the ligand in the precursor, the larger the particle size of the sample. With the increase of Eu3 + doping concentration, the excitation spectra are red-shifted and their emission intensities are maximal at doping concentration of 5% and 10%, respectively. The emission intensity is related to Re3 + and ligand molar ratio and annealing temperature.