Institutional Repository of Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui 230031, China
Sc2O3:Nd,Sc2O3:Yb纳米粉体的制备和光致发光 | |
其他题名 | Synthesis and Photoluminescence Properties of Nanocrystalline Sc2O3:Nd and Sc2O3:Yb Powders |
肖进; 张庆礼; 邵淑芳; 刘文鹏; 丁丽华; 殷绍唐 | |
2009 | |
发表期刊 | 人工晶体学报 |
ISSN | 1000-985X |
摘要 | 以反滴定共沉淀方法制备了Sc2O3:Nd、Sc2O3:Yb纳米粉体,用热重、差热分析、X射线衍射对前驱体相变及粉体结构进行了研究,并研究了其光致发光。Sc2O3:Nd、Sc2O3:Yb前躯体的热重和差热曲线分别在73℃、77℃与434℃、436℃出现了明显的热失重和吸热峰,结合XRD表明约在450℃,前驱体粉体经γ-ScOOH相转变为立方Sc2O3相。Reitveld方法精修给出Sc、O的原子坐标。结果表明,掺杂离子导致了晶格畸变。在825nm光激发下,粉体Sc2O3:Nd的1084nm主荧光峰为Nd^3+的4^F3/2→4^I11/2跃迁;在937nm光激发下,粉体Sc2O3:Yb的1044nm主荧光峰为Yb^3+的2^F5/2→2^F7/2跃迁。Sc2O3:Nd、Sc2O3:Yb的发光光谱表明激活离子处于较强晶场中,Stark能级分裂大,有利于降低Yb^3+的激光阈值、提高激光热稳定性。 |
合作性质 | 国内 |
其他摘要 | Nanocrystalline Sc2O3:Nd and Sc2O3:Yb powders were prepared by reverse-striking co-precipitation method. The phase transition and the structure of the precipitant precursor were analyzed by TG-DTA and the X-ray diffraction. Meanwhile, the photoluminescence of Sc2O3:Nd and Sc2O3:Yb powders were also studied. The results of TG-DTA show that obvious weight loss and endothermic peaks appear at 73 ℃, 434 ℃ for Sc2O3:Yb and 77 ℃, 436 ℃ for Sc2O3:Nd, respectively. According to the X-ray diffraction, it can be deduced that the precursor transforms from γ-ScOOH phase into cubic Sc2O3 phase at about 450 ℃. The atom coordinates of Sc and O are obtained by Rietveld refinement method. The doped ions lead to the distortion of lattice .The photoluminescence peak of the Sc2O3:Nd under 825 nm excitation locates at 1084 nm, which is from 4^F3/2→4^I11/2 transition of Nd^3+, and the strongest emission peak of the Sc2O3:Yb under 937 nm excitation is at 1044 nm, which is attributed to 2^F5/2→2^F7/2 transition of Yb^3+. The emission spectra indicate that active ions are located in a relatively strong crystal field, which leads to a large splitting of the active ions energy levels. It is beneficial to decrease the laser threshold of Yb^3+ and improve the thermal stability of laser. |
关键词 | Sc2O3:Nd Sc2O3:Yb 反滴定法 光致发光 |
学科领域 | 激光技术与应用 ; 纳米材料与技术 |
收录类别 | 其他 |
语种 | 中文 |
CSCD记录号 | CSCD:3620161 |
文献类型 | 期刊论文 |
条目标识符 | http://ir.hfcas.ac.cn:8080/handle/334002/204 |
专题 | 中科院安徽光学精密机械研究所 |
推荐引用方式 GB/T 7714 | 肖进,张庆礼,邵淑芳,等. Sc2O3:Nd,Sc2O3:Yb纳米粉体的制备和光致发光[J]. 人工晶体学报,2009,038(2). |
APA | 肖进,张庆礼,邵淑芳,刘文鹏,丁丽华,&殷绍唐.(2009).Sc2O3:Nd,Sc2O3:Yb纳米粉体的制备和光致发光.人工晶体学报,038(2). |
MLA | 肖进,et al."Sc2O3:Nd,Sc2O3:Yb纳米粉体的制备和光致发光".人工晶体学报 038.2(2009). |
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