1. 毕业设计（论文）的内容和要求
本课题选用NaBiF4做基质，利用其优异的发光的特点，研究这种基质的发光性能，期望得到具有良好发光性能的发光材料, Yb3 - Er3 是上转换发光中最为有效的离子体系。
利用此离子体系，制备出所需的上转换发光纳米材料。
而Li的掺入能够加强绿色发光峰的强度，从而获得能够更高发光强度的样品。
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] Suyver J, Grimm J, Veen M. v.; Biner, D.; Krmer, KW; Gdel, HU [J]. J. Lumin, 2006, 117(1).[2] Wang F, Han Y, Lim C S, et al. Simultaneous phase and size control of upconversion nanocrystals through lanthanide doping [J]. nature, 2010, 463(7284): 1061.[3] Fran Ois A. Upconversion and anti-Stokes processes with f and d ions in solids [J]. Cheminform, 2004, 35(16): 139.[4] Niedbala R S, Feindt H, Kardos K, et al. Detection of analytes by immunoassay using up-converting phosphor technology [J]. Analytical biochemistry, 2001, 293(1): 22-30.[5] Fan W, Wang Y, Hou X, et al. Picosecond infrared laser stimulation of luminescence in CaS: Eu, Sm [J]. Journal of applied physics, 1999, 85(1): 451-454.[6] Lindmayer J. A new erasable optical memory [J]. Solid State Technol., 1988.[7] Gapontsev V, Matitsin S, Isineev A, et al. Erbium glass lasers and their applications [J]. Optics Laser Technology, 1982, 14(4): 189-196.[8] Feng W, Xiaogang L. Upconversion multicolor fine-tuning: visible to near-infrared emission from lanthanide-doped NaYF4 nanoparticles [J]. Journal of the American Chemical Society, 2008, 130(17): 5642-5643.[9] Li Z, Zhang Y, Jiang S. Multicolor core/shell-structured upconversion fluorescent nanoparticles [J]. Advanced Materials, 2008, 20(24): 4765-4769.[10] Chatterjee D K, Rufaihah A J, Zhang Y. Upconversion fluorescence imaging of cells and small animals using lanthanide doped nanocrystals [J]. Biomaterials, 2008, 29(7): 937-943.[11] Jing Z, Zhuang L, Li F. ChemInform Abstract: Upconversion Nanophosphors for Small-Animal Imaging [J]. Cheminform, 2012, 43(17).[12] Shen J, Sun L D, Yan C H. Luminescent rare earth nanomaterials for bioprobe applications [J]. Dalton Trans, 2008, 42(42): 5687-5697.[13] Su Y, Liu X, Lei P, et al. Core-shell-shell heterostructures of α-NaLuF4:Yb/Er @ NaLuF4:Yb @ MF2 (M = Ca, Sr, Ba) with remarkably enhanced upconversion luminescence [J]. Dalton Transactions, 2016, 45(27): 11129.[14] Kraemer K W, Biner D, Frei G, et al. Hexagonal Sodium Yttrium Fluoride Based Green and Blue Emitting Upconversion Phosphors [J]. Cheminform, 2010, 35(26): 1244-1251.[15] Zhao J, Sun Y, Kong X, et al. Controlled synthesis, formation mechanism, and great enhancement of red upconversion luminescence of NaYF4: Yb3 , Er3 nanocrystals/submicroplates at low doping level [J]. The Journal of Physical Chemistry B, 2008, 112(49): 15666-15672.[16] Du P, Luo L, Huang X, et al. Ultrafast synthesis of bifunctional Er3 /Yb3 -codoped NaBiF4 upconverting nanoparticles for nanothermometer and optical heater [J]. J Colloid Interface Sci, 2018, 514: 172-181.[17] Chen X P, Zhang Q Y, Yang C H, et al. Comparative investigation on structure and luminescence properties of fluoride phosphors codoped with Er/Yb [J]. Spectrochimica Acta Part A Molecular Biomolecular Spectroscopy, 2009, 74(2): 441-445.[18] Liu Y, Tu D, Zhu H, et al. A strategy to achieve efficient dual-mode luminescence of Eu3 in lanthanides doped multifunctional NaGdF4 nanocrystals [J]. Advanced Materials, 2010, 22(30): 3266-3271.[19] Zhang K, Zhao Y, He F, et al. Piezoelectricity of ZnO Films Prepared by Sol-Gel Method [J]. Chinese Journal of Chemical Physics, 2007, 20(6): 721-726.[20] Feng W, Yu H, Chin Seong L, et al. Simultaneous phase and size control of upconversion nanocrystals through lanthanide doping[J]. Nature, 2010, 463(7284): 1061-1065.[21] Tian G, Gu Z, Zhou L, et al. Mn2 dopant‐controlled synthesis of NaYF4: Yb/Er upconversion nanoparticles for in vivo imaging and drug delivery [J]. Advanced materials, 2012, 24(9): 1226-1231.[22] Hao L, Xu D, Li A, et al. Simultaneous realization of structure manipulation and emission enhancement in NaLuF4 upconversion crystals [J]. Journal of Materials Chemistry C, 2015, 3(44): 11754-11765.[23] Lei P, An R, Yao S, et al. Ultrafast synthesis of novel hexagonal phase NaBiF4 upconversion nanoparticles at room temperature[J]. Advanced Materials, 2017, 29(22): 1700505.[24] Peng D, Luo L, Park H K, et al. Citric-assisted sol-gel based Er3 /Yb3 -codoped Na0.5Gd0.5MoO4: A novel highly-efficient infrared-to-visible upconversion material for optical temperature sensors and optical heaters [J]. Chemical Engineering Journal, 2016, 306: 840-848.[25] Huang X, Liang J, Xu Q, et al. Low-temperature molten-salt synthesis and upconversion of novel hexagonal NaBiF4:Er3 /Yb3 micro-/nanocrystals [J]. Rsc Advances, 2017, 7(65): 41190-41203.[26] Wu X, Xu L, Ma W, et al. Propeller-like nanorod-upconversion nanoparticle assemblies with intense chiroptical activity and luminescence enhancement in aqueous phase [J]. Advanced Materials, 2016, 28(28): 5907-5915.[27] Yu Y, Wu Z, Zhang S. Concentration effects of Er3 ion in YAG:Er laser crystals [J]. Journal of Alloys Compounds, 2000, 302(1): 204-208.
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