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1. 吉林大学电子科学与工程学院 集成光电子学国家重点联合实验室,吉林 长春,130012
2. 长春工业大学 化学与生命科学学院,吉林 长春,130012
3. 长春工业大学 基础科学学院,吉林 长春,130012
4. 长春工业大学 材料科学高等研究院,吉林 长春,130012
纸质出版日期:2015-1-3,
收稿日期:2014-9-22,
修回日期:2014-10-17,
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李大光, 刘世虎, 兰民等. Ca<sup>2+</sup>掺杂对NaYF<sub>4</sub>:Yb,Er微米晶上转换发光性能的影响[J]. 发光学报, 2015,36(1): 45-49
LI Da-guang, LIU Shi-hu, LAN Min etc. Effect of Ca<sup>2+</sup> Doping on The Upconversion Luminescence of Hexagonal NaYF<sub>4</sub>:Yb,Er Microcrystals[J]. Chinese Journal of Luminescence, 2015,36(1): 45-49
李大光, 刘世虎, 兰民等. Ca<sup>2+</sup>掺杂对NaYF<sub>4</sub>:Yb,Er微米晶上转换发光性能的影响[J]. 发光学报, 2015,36(1): 45-49 DOI: 10.3788/fgxb20153601.0045.
LI Da-guang, LIU Shi-hu, LAN Min etc. Effect of Ca<sup>2+</sup> Doping on The Upconversion Luminescence of Hexagonal NaYF<sub>4</sub>:Yb,Er Microcrystals[J]. Chinese Journal of Luminescence, 2015,36(1): 45-49 DOI: 10.3788/fgxb20153601.0045.
采用柠檬酸钠辅助的水热方法制备了一系列不同Ca
2+
含量的Ca
2+
/Yb
3+
/Er
3+
共掺的NaYF
4
微米片。利用透射电子显微镜(TEM)、X射线衍射分析(XRD)、发光光谱等测量手段对样品进行了形貌、晶相、发光性质的表征。样品在980 nm激光泵浦下
可以观察到强的上转换绿色荧光。在Ca
2+
的摩尔分数从0增加到8%的过程中
紫外到可见的上转换发光随着Ca
2+
浓度的增加而显著增强。这是由于Ca
2+
的掺杂导致了晶体内部的不对称性
同时也提高了晶体的结晶性。
Hexagonal NaYF
4
:Yb/Er microcrystals were prepared by a facile trisodium citrate-assisted hydrothermal method. The microparticles were characterized by TEM
X-ray diffraction (XRD)
and luminescent spectra. Intense green upconversion luminescence was observed under 980 nm excitation. By introducing Ca
2+
dopants into the grain lattices
the upconversion luminescence intensity of NaYF
4
:Yb/Er microcrystal was improved significantly. The enhancement is proposed to originate from a modification of the crystal structure and an improvement in the crystallinity of NaYF
4
:Yb/Er microcrystals.
Ca2+掺杂NaYF4上转换发光
Ca2+ impurity dopingNaYF4upconversion luminescence
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Wang Y, Gai S L, Niu N, et al. Synthesis of NaYF4 microcrystals with different morphologies and enhanced up-conversion luminescence properties [J]. Phys. Chem. Chem. Phys., 2013, 15(39):16795-16805.
Lei L, Chen D Q, Xu J, et al. Highly intensified upconversion luminescence of Ca2+-doped Yb/Er:NaGdF4 nanocrystals prepared by a solvothermal route [J]. Chem. Asian J., 2014, 9(3):728-733.
Zhao Q, Shao B Q, L W, et al. Doping alkaline-earth: A strategy of stabilizing hexagonal GdF3 at room temperature [J]. Dalton. Trans., 2013, 42(43):15482-15488.
Auzel F. Upconversion and anti-Stokes processes with f and d ions in solids [J]. Chem. Rev., 2004, 104(1):139-174.
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Lei L, Chen D, Huang P, et al. Modifying the size and uniformity of upconversion Yb/Er:NaGdF4 nanocrystals through alkaline-earth doping [J]. Nanoscale, 2013, 5(22):11298-11305.
Zhao C Z, Kong X G, Liu X M, et al. Li+ ion doping: An approach for improving the crystallinity and upconversion emissions of NaYF4:Yb3+,Tm3+ nanoparticles [J]. Nanoscale, 2013, 5(17):8084-8089.
Wang M, Mi C C, Wang W X, et al. Immunolabeling and NIR-excited fluorescent imaging of HeLa cells by using NaYF4:Yb,Er upconversion nanoparticles [J]. ACS Nano, 2009, 3(6):1580-1586.
Haase M, Schfer H. Upconverting nanoparticles [J]. Angew. Chem. Int. Ed., 2011, 50(26):5808-5829.
Wang F, Han Y, Lim C, et al. Simultaneous phase and size control of upconversion nanocrystals through lanthanide doping [J]. Nature, 2010, 463(7284):1061-1065.
Chen D Q, Huang P. Highly intense upconversion luminescence in Yb/Er:NaGdF4@NaYF4 core-shell nanocrystals with complete shell enclosure on core [J]. Dalton Trans., 2014, 43:11299-11304.
Chen D Q, Chen Y, Lu H W, et al. A bifunctional Cr/Yb/Tm:Ca3Ga2Ge3O12 phosphor with near-infrared long-lasting phosphorescence and upconversion luminescence [J]. Inorg. Chem., 2014, 53(16):8638-8645.
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