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Ag@SiO2核壳纳米颗粒对Eu-PMMA薄膜的发光增强效应

龙江迷 陈晓波 赵国营 李永良 郭敬华 王杰亮 李崧 刘泉林

龙江迷, 陈晓波, 赵国营, 李永良, 郭敬华, 王杰亮, 李崧, 刘泉林. Ag@SiO2核壳纳米颗粒对Eu-PMMA薄膜的发光增强效应[J]. 中国光学. doi: 10.37188/CO.2021-0013
引用本文: 龙江迷, 陈晓波, 赵国营, 李永良, 郭敬华, 王杰亮, 李崧, 刘泉林. Ag@SiO2核壳纳米颗粒对Eu-PMMA薄膜的发光增强效应[J]. 中国光学. doi: 10.37188/CO.2021-0013
LONG Jiang-mi, CHEN Xiao-bo, ZHAO Guo-ying, LI Yong-liang, GUO Jing-hua, WANG Jie-liang, LI Song, LIU Quan-lin. Luminescence enhancement effect of Ag@SiO2 coreshell nanoparticles on Eu-PMMA films[J]. Chinese Optics. doi: 10.37188/CO.2021-0013
Citation: LONG Jiang-mi, CHEN Xiao-bo, ZHAO Guo-ying, LI Yong-liang, GUO Jing-hua, WANG Jie-liang, LI Song, LIU Quan-lin. Luminescence enhancement effect of Ag@SiO2 coreshell nanoparticles on Eu-PMMA films[J]. Chinese Optics. doi: 10.37188/CO.2021-0013

Ag@SiO2核壳纳米颗粒对Eu-PMMA薄膜的发光增强效应

doi: 10.37188/CO.2021-0013
基金项目: 国家自然科学基金项目(No. 51972020与No. 51472028);中央高校基本科研业务费专项资金(No. 017TZ01)
详细信息
    作者简介:

    龙江迷(1994—),女,贵州黔南人,硕士,北京师范大学物理学系硕士在读,主要从事稀土离子发光学方面的研究。E-mail:ljiangmi@163.com;Tel:18813091656

    陈晓波(1963—),男,福建福州人,博士,教授,博士生导师,1992年获北京大学博士学位,主要从事发光学与光学研究方向等方面的研究。E-mail:chen78xb@sina.com;Tel:13521815726

    赵国营(1986—),男,山东人,博士,副教授,2013年博士毕业于中国科学院上海光学精密机械研究所,主要从事光电功能材料等方面研究。E-mail:zhaogy135@sit.edu.cn

    李永良(1963—),男,浙江嘉兴人,硕士,副研究员,1988年07月硕士毕业于北京科技大学金属物理专业,主要从事凝聚态物理方向等方面的研究。E-mail:liyongliang@bnu.edu.cn

    郭敬华(1977—),女,辽宁人,博士,高工,2004年在北京师范大学获博士学位。主要从事材料分析研究等方面的研究。E-mail:gjh@bnu.edu.cn

    王杰亮(1978—),男,山西人,博士,工程师,2008年北京师范大学数学系博士毕业,主要从事计算物理学方向的研究。E-mail:wangjieliang@bnu.edu.cn

    李 崧(1973—),男,河南人,博士,教授级高工,1998年北京师范大学物理系博士毕业,主要从事计算物理学方向的研究。E-mail:kjlis@bnu.edu.cn

    刘泉林(1970—),男,山东人,博士,教授,1998年毕业于中国科学院物理研究所,主要从事光功能材料与器件方面的研究。E-mail:qlliu@ustb.edu.cn

  • 中图分类号: O433.1

Luminescence enhancement effect of Ag@SiO2 coreshell nanoparticles on Eu-PMMA films

Funds: Project supported by the National Natural Science Foundation of China (No. 51972020 and No. 51472028); the Fundamental Research Funds for the Central Universities of China (No. 2017TZ01)
More Information
  • 摘要: 为了提高稀土离子的发光性能,在稀土发光材料中引入了贵金属纳米颗粒。金属等离子体共振可以产生局域电场,作用于稀土离子的发光过程,能达到发光增强的效果。Ag@SiO2核壳结构纳米颗粒可以有效控制金属Ag与稀土离子之间的距离,既能达到等离子体共振增强的效果,又可以避免与发光中心距离过近时产生非辐射能量传递导致的荧光淬灭。首先,用滴铸法先将不同浓度的Ag@SiO2纳米颗粒滴在石英片上,接着,将Eu(dbm)3phen:PMMA: 二氯甲烷混合溶液通过旋涂制备得到Eu-PMMA复合薄膜。对样品进行形貌表征和发光测量,发现Ag@SiO2纳米颗粒的引入使薄膜的发光强度得到增强,测量的激发光谱的最大增强因子为2.50倍,发射光谱的最大增强因子为2.15倍。对样品进行荧光寿命测量,含有Ag@SiO2纳米颗粒的薄膜样品的发光寿命也得到延长。引入Ag@SiO2纳米颗粒增强发光展现了良好的增强效果,且实验方法可操作性强,是一种具有良好应用潜力的增强稀土发光材料的发光强度的方法。
  • 图  1  (a)核壳Ag@SiO2纳米颗粒的TEM图像,(b)滴铸有Ag@SiO2纳米颗粒的石英片的SEM图像

    Figure  1.  (a) TEM image of core-shellAg@SiO2 nanoparticles; (b) SEM image of quartz flakes dripping with Ag@SiO2 nanoparticles

    图  2  Ag@SiO2纳米颗粒的吸收光谱

    Figure  2.  Absorption spectra of Ag@SiO2 nanoparticles

    图  3  Eu-PMMA复合薄膜的吸收光谱图

    Figure  3.  Absorption spectra of Eu-PMMA composite films

    图  4  Ag@SiO2:Eu-PMMA发光薄膜的能级结构和表面等离子体增强发光过程示意图:蓝线、红线和绿线分别代表吸收、发光和共振散射增强过程

    Figure  4.  Schematic diagram of the energy level structure and surface Plasmon enhanced luminescence process of Ag@SiO2:Eu-PMMA films:The blue, red and green lines represent absorption, luminescence and resonance scattering enhancement respectively

    图  5  不同Ag@SiO2纳米颗粒浓度的Eu-PMMA复合薄膜的激发光谱

    Figure  5.  Excitation spectra of Eu-PMMA films with different concentrations of Ag@SiO2 nanoparticles

    图  6  不同Ag@SiO2纳米颗粒浓度的Eu-PMMA复合薄膜的荧光光谱

    Figure  6.  Fluorescence spectra of Eu-PMMA films with different concentrations of Ag@SiO2 nanoparticles

    图  7  随着Ag@SiO2纳米颗粒浓度的增加:A(黑线)为薄膜的激发增强因子,B(红线)为薄膜在612 nm处的发光增强因子

    Figure  7.  With the increasing of Ag@SiO2 nanoparticle concentration: A (black) was the enhancement factor of excitation of films, and B (red) was the enhancement factor of luminescence at 612 nm of films

    图  8  薄膜样品的发光衰减曲线

    Figure  8.  Luminescence decay curves of film sample

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  • 网络出版日期:  2021-05-15

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