Changchun Institute of Optics,Fine Mechanics and Physics,CAS
| Solvothermal synthesis and upconversion properties of about 10nm orthorhombic LuFinf3/inf: Ybsup3+/sup, Ersup3+/sup rectangular nanocrystals | |
| Xiang, G.; J. Zhang; Z. Hao; X. Zhang; G.-H. Pan; L. Chen; Y. Luo; S. Lu and H. Zhao | |
| 2015 | |
| 发表期刊 | Journal of Colloid and Interface Science
 |
| 卷号 | 459 |
| 摘要 | The Ybsup3+/sup and Ersup3+/sup codoped orthorhombic LuFinf3/inf rectangular nanocrystals (NCs) with the size of about 10nm were synthesized by a facile and effective solvothermal process. X-ray diffraction (XRD), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), upconversion (UC) luminescence spectra and decay curves were used to characterize the resulting samples. Compared with YFinf3/inf and -NaYFinf4/inf NCs, owning the similar size and the same doping levels of Ybsup3+/sup ions and Ersup3+/sup ions as LuFinf3/inf NCs, the green UC emission of LuFinf3/inf NCs is 18.7 times and 5.1 times stronger than that of YFinf3/inf and -NaYFinf4/inf NCs respectively; the red UC emission of LuFinf3/inf NCs is 13.2 times and 0.6 times stronger than that of YFinf3/inf and -NaYFinf4/inf NCs respectively. Under 980nm wavelength excitation, the decay curves of both sup4/supSinf3/2/infsup4/supIinf15/2/inf transition and sup4/supFinf9/2/infsup4/supIinf15/2/inf transition exhibit a single exponential function, resulting from the fast energy migrations among Ybsup3+/sup ions caused by the high concentration of Ybsup3+/sup ions (20mol%). Meanwhile, at relatively low power density, the slopes of the linear plots between log(I) and log(P) for green UC and red UC are 1.7 and 1.9 respectively, which are less than 2 due to the quenching of the thermal effect, indicating a two-photon process for them. At high power density, the slopes are decreased caused by the saturation effect. In addition, we proved the existence of the thermal effect by the pump power dependence of the intensity ratio of sup2/supHinf11/2/infsup4/supIinf15/2/inf transition to sup4/supSinf3/2/infsup4/supIinf15/2/inf transition. 2015 Elsevier Inc. |
| 文章类型 | 期刊 |
| 收录类别 | EI |
| 语种 | 英语 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ciomp.ac.cn/handle/181722/55912 |
| 专题 | 中科院长春光机所知识产出 |
| 推荐引用方式 GB/T 7714 | Xiang, G.,J. Zhang,Z. Hao,et al. Solvothermal synthesis and upconversion properties of about 10nm orthorhombic LuFinf3/inf: Ybsup3+/sup, Ersup3+/sup rectangular nanocrystals[J]. Journal of Colloid and Interface Science,2015,459. |
| APA | Xiang, G..,J. Zhang.,Z. Hao.,X. Zhang.,G.-H. Pan.,...&S. Lu and H. Zhao.(2015).Solvothermal synthesis and upconversion properties of about 10nm orthorhombic LuFinf3/inf: Ybsup3+/sup, Ersup3+/sup rectangular nanocrystals.Journal of Colloid and Interface Science,459. |
| MLA | Xiang, G.,et al."Solvothermal synthesis and upconversion properties of about 10nm orthorhombic LuFinf3/inf: Ybsup3+/sup, Ersup3+/sup rectangular nanocrystals".Journal of Colloid and Interface Science 459(2015). |
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