人工晶体学报2011，Vol.40Issue(6)：1440-1445,6.
水热法合成Gd2O3∶Dy3+纳米棒及发光性能
Synthesis and Luminescent Properties of Gd2O3∶ Dy3+ Nanorods by Hydrothermal Method
摘要
Abstract
Gd2O3: Dy3+ nanorods were synthesized by hydrothermal method using sodium hydroxide as precipitation agent. The phase structure and micrographs of the precursor and the target product were characterized by FTIR, SEM and XRD. The luminescent properties of the phosphors were investigated by fluorescence spectrophotometer. The results show that the obtained precursor is hexagonal phase gadolinium (dysprosium) hydroxide. GdjOj: Dy3+ with pure cubic phase could be obtained after the precursors were calcined at 900 °C. The Gd2O3: Dy3 +samples are nanorods with a diameter about 100 ran and a length about 500 nm ~ 1 jjun. The excitation spectrum is composed of a series of peaks located at 239 ran, 279 nm, 314 nm and 353 nm, respectively, and the strongest peak is at 279 ran. The emission spectrum mainly consists of two parts, the blue emitting peaks (band) in the range of 460-500 nm and the yellow-green emitting peaks (band) in the range of 560-590 nm. All the peaks (bands) are ascribed to the characteristic emission of Dy3+. The intensity of the latter emitting peaks (band) was much stronger than that of the former; therefore, the samples show yellow-light emitting under the excitation of ultraviolet light.关键词
Gd2O3∶Dy3+/纳米棒/水热合成/光致发光Key words
Gd2O3: Dy3 + / nanorods/ hydrothermal synthesis/ photoluminescence分类
化学化工引用本文复制引用
翟永清,刘亚红,游志江,邢瑞思,艾肖..水热法合成Gd2O3∶Dy3+纳米棒及发光性能[J].人工晶体学报,2011,40(6):1440-1445,6.基金项目
国家自然科学基金(20675023)资助项目 （20675023）
