1. 毕业设计（论文）的内容和要求
本课题为达到有效抑制纳米颗粒因表面缺陷导致的发光猝灭，采用CaF2对NaMgF3: 2.5%Yb3 , 0.5%Er3 纳米颗粒进行包覆处理。
研究表面包覆层的制备工艺的变化对NaMgF3: 2.5%Yb3 , 0.5%Er3 核壳上转换发光性能的影响。
通过XRD测试对制备样品的晶体结构进行物相组成的分析；通过SEM和TEM进行表面形貌和显微结构的分析；通过荧光光谱仪对样品进行上转换光谱测试（UPL），采用980nm激光器作为激发光源，测得样品的发光强度、发光颜色等性能；采用ColorCoordinate软件对样品的上转换光谱进行分析，计算样品的色度坐标。
2. 参考文献
根据毕业要求指点10.3，毕设期间要进行研究现状调查与总结，要求在开题报告及毕业设计（论文）中涉及的中英文文献不少于30篇，其中英文文献不少于5篇，1篇英文文献要翻译为中文。
以下是与本课题相关的部分文献列表：（提供适当参考文献，学生自己按需补充）[1] 谢暖. 稀土(Eu3 、Eu2 、Tb3 )掺杂白光LED用三基色荧光粉的发光性能研究 [D]. 苏州: 苏州大学, 2012.[2] 洪广言. 稀土发光材料[M]. 北京：科学出版社, 2011.[3] 丁莎. Mn2 掺杂钙钛矿三氟化物结构调控及其发光性能研究 [D]. 广州: 华南理工大学, 2016.[4] 伍洪标. 材料色度的测定与解析计算法[J]. 玻璃, 2003, 30(4): 25-27.[5] Guanying C., Jie S., Ohulchanskyy T. Y., et al. (α-NaYbF4:Tm3 )/CaF2 core/shell nanoparticles with efficient near-infrared to near-infrared upconversion for high-contrast deep tissue bioimaging[J]. Acs Nano, 2012, 6(9): 8280-8287.[6] Li Y., Gu Y., Yuan W., et al. CoreShellShell NaYbF4: Tm@ CaF2@ NaDyF4 Nanocomposites for Upconversion/T2-Weighted MRI/Computed Tomography Lymphatic Imaging[J]. ACS applied materials interfaces, 2016, 8(30): 19208-19216.[7] Chen B., Wang F. NaYbF4@CaF2 CoreSatellite Upconversion Nanoparticles: One-Pot Synthesis and Sensitive Detection of Glutathione[J]. Nanoscale, 2018, 10(42): 19898-19905.[8] 杨建虎, 戴世勋, 姜中宏. 稀土离子的上转换发光及研究进展[J]. 物理学进展, 2003, 23(3): 284-298.[9] Chen X, Peng D, Ju Q, et al. Photon upconversion in coreshell nanoparticles[J]. Chemical Society Reviews, 2015, 44(6): 1318-1330.[10] Nadort A, Zhao J, Goldys E M. Lanthanide upconversion luminescence at the nanoscale: fundamentals and optical properties[J]. Nanoscale, 2016, 8(27): 13099-13130.[11] Tian Y, Tian B, Huang P, et al. Size-dependent upconversion luminescence and temperature sensing behavior of spherical Gd2O3: Yb3 /Er3 phosphor[J]. Rsc Advances, 2015, 5(19): 14123-14128.[12] Tian Y, Tian Y, Huang P, et al. Effect of Yb3 concentration on upconversion luminescence and temperature sensing behavior in Yb3 /Er3 co-doped YNbO4 nanoparticles prepared via molten salt route[J]. Chemical Engineering Journal, 2016, 2(97): 26-34.[13] Huang X. Dual-model upconversion luminescence from NaGdF4: Nd/Yb/Tm@ NaGdF4: Eu/Tb coreshell nanoparticles[J]. Journal of Alloys and Compounds, 2015, 6(28): 240-244.[14] Tang J, Chen L, Li J, et al. Selectively enhanced red upconversion luminescence and phase/size manipulation via Fe3 doping in NaYF4: Yb, Er nanocrystals[J]. Nanoscale, 2015, 7(35): 14752-14759.[15] Ding M, Ni Y, Song Y, et al. Li ions doping coreshell nanostructures: an approach to significantly enhance upconversion luminescence of lanthanide-doped nanocrystals[J]. Journal of Alloys and Compounds, 2015, 6(23): 42-48.[16] Cheng X, Yang K, Wang J, et al. Up-conversion luminescence and optical temperature sensing behaviour of Yb3 /Er3 codoped CaWO4 material[J]. Optical Materials, 2016, 58: 449-453.[17] Bhiri N M, Dammak M, Aguil M, et al. Stokes and anti-Stokes operating conditions dependent luminescence thermometric performance of Er3 -doped and Er3 , Yb3 co-doped GdVO4 microparticles in the non-saturation regime[J]. Journal of Alloys and Compounds, 2020, 814: 152197.[18] Fu J, Hu X, Luan F, et al. Optimum synthesis and properties of NaBiF4: Yb/Er upconversion nanoparticles[J]. Ceramics International, 2019, 45(18): 24365-24374.
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