水热法促进EuVO4@YVO4核壳结构纳米颗粒中Eu3+的扩散及其对发光性能的影响

谢蒂旎; 彭洪尚; 黄世华; 由芳田; 王小卉

doi:10.7498/aps.63.147801

摘要

采用共沉淀法制备了EuVO4@YVO4核壳结构纳米颗粒，然后用聚电解质聚苯乙烯磺酸钠对其进行包覆和保护，并在200 ℃下对样品水热处理0–48 h. 在水热处理48 h后，样品的发光强度增强了约5倍，平均发光寿命由0.410 ms延长至0.579 ms. 对样品的发光衰减曲线的拟合、分析为Eu3+的扩散提供了有力的证据. 这种自内而外的扩散降低了样品核心中Eu3+的局域浓度，削弱了浓度猝灭效应，同时又能够避免表面猝灭效应的发生，从而使得样品的发光寿命变长、发光效率迅速提升.

关键词:

Abstract

EuVO4@YVO4 core-shell nanoparticles (NPs) are synthesized, coated by poly(sodium 4-styrenesulfonate) and hydrothermally treated at 200 ℃ for 0-48 h. The photoluminescence (PL) intensity of as-prepared sample is enhanced by about 5 times after 48-hour hydrothermal treatment, and the average lifetime is raised up from 0.410 ms to 0.579 ms. Further studies of hydrothermal time-dependent PL decay curves provide evidence for the diffusion of Eu3+ in core-shell NPs, which could reduce the concentration quenching in particle core and hence enhance the PL efficiency. This thermal diffusion strategy based on ion-doped core-shell NPs could be used to prepare luminescent NPs with high efficiency if designed elaborately.

Keywords:

作者及机构信息

1.
北京交通大学, 发光与光信息技术教育部重点实验室, 北京交通大学光电子技术研究所, 北京 100044

基金项目: 国家自然科学基金（批准号：61078069，10979009）、教育部新世纪优秀人才支持计划（批准号：12-0177）和中央高校基本科研业务费专项资金（批准号：2010JBZ006，2013YJS090）资助的课题.

Authors and contacts

1.
Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing 100044, China

Funds: Project supported by the National Natural Science Foundation of China (Grants Nos. 61078069, 10979009), Program for New Century Excellent Talents in University of Ministry of Education of China (Grant No. 12-0771), and the Fundamental Research Funds for the Central Universities, China (Grant Nos. 2010JBZ006, 2013YJS090).

参考文献

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施引文献

[1]	Alivisatos A P 1996 Science 271 933
[2]	Vollath D 2013 Nanomaterials: An Introduction to Synthesis, Properties and Applications (Weinheim: Wiley-VCH)
[3]	Jiang H, Wang G, Zhang W, Liu X, Ye Z, Jin D, Yuan J, Liu Z 2010 J. Fluoresce. 20 321
[4]	Chen X Y, Liu Y S, Tu D T 2014 Lanthanide-Doped Luminescent Nanomaterials (Berlin: Springer)
[5]	Thanh N T K, Green L A W 2010 Nano Today 5 213
[6]	Tian L J, Sun Y J, Yu Y, Kong X G, Zhang H 2008 Chem. Phys. Lett. 452 188
[7]	Gao C C, Huang S H, You F T, Kang K, Feng Y 2008 Chin. Phys. Lett. 25 698
[8]	Huang S H, You F T 2009 J. Lumin. 129 1692
[9]	Xie D N, Peng H S, Huang S H, You F T 2013 J. Nanomater. 2013 891515
[10]	Li C X, Liu X M, Yang P P, Zhang C M, Lian H Z, Lin J 2008 J. Phys. Chem. C 112 2904
[11]	Ghosh P, Kar A, Patra A 2010 J. Appl. Phys. 108 113506
[12]	Ge W, Zhang X R, Liu M, Lei Z W, Knize R J, Lu Y L 2013 Theranostics 3 282
[13]	Jiang D X, Cao L X, Su G, Liu W, Qu H, Sun Y G, Dong B H 2009 Mater. Chem. Phys. 115 795
[14]	Li X M, Shen D K, Yang J P, Yao C, Che R C, Zhang F, Zhao D Y 2012 Chem. Mater. 25 106
[15]	DiMaio J, Kokuoz B, James T, Harkey T, Monofsky D, Ballato J 2008 Opt. Express 16 11769
[16]	Zheng J J, Ji W Y, Wang X Y, Ikezawa M, Jig P T, Liu X Y, Li H B, Zhao J L, Masumoto Y 2010 J. Phys. Chem. C 114 15331
[17]	Huignard A, Buissette V, Laurent G, Gacoin T, Boilot JP 2002 Chem. Mater. 14 2264
[18]	Yu J G, Li C, Liu S W 2008 J. Colloid Interf. Sci. 326 433
[19]	Li Y H, Hong G Y 2005 J. Solid State Chem. 178 645
[20]	Huignard A, Buissette V, Franville A C, Gacoin T, Boilot J P 2003 J. Phys. Chem. B 107 6754
[21]	Blasse G 1967 J. Chem. Phys. 46 2583
[22]	Blasse G, Kiliaan H, Vries A 1988 J. Lumin. 40 639
[23]	Yu C L, Dai S X, Zhou G, Zhang J J, Hu L L, Jiang Z H 2005 Acta Phys. Sin. 54 3894 (in Chinese) [于春雷, 戴世勋, 周刚, 张军杰, 胡丽丽, 姜中宏 2005 物理学报 54 3894]
[24]	Han L, Song F, Zou C G, Su J, Yan L H, Tian J G, Zhang G Y 2007 Acta Phys. Sin. 56 4187 (in Chinese) [韩琳, 宋峰, 邹昌光, 苏静, 闫立华, 田建国, 张光寅 2007 物理学报 56 4187]
[25]	Tang S, Huang M L, Wang J L, Yu F D, Shang G L, Wu J H 2012 J. Alloys Compd. 513 474
[26]	Murakami S, Herren M, Rau D, Morita M 2000 Inorg. Chim. Acta 300 1014
[27]	Fujii T, Kodaira K, Kawauchi O 1997 J. Phys. Chem. B 101 10631

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