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Ag@SiO2纳米核壳结构对铒碲发光玻璃的发光增强机制

陈晓波 李崧 赵国营 刘洪珍 郭敬华 马瑜 王克志 耿珠峰

陈晓波, 李崧, 赵国营, 刘洪珍, 郭敬华, 马瑜, 王克志, 耿珠峰. Ag@SiO2纳米核壳结构对铒碲发光玻璃的发光增强机制[J]. 中国光学(中英文), 2022, 15(2): 224-232. doi: 10.37188/CO.2021-0142
引用本文: 陈晓波, 李崧, 赵国营, 刘洪珍, 郭敬华, 马瑜, 王克志, 耿珠峰. Ag@SiO2纳米核壳结构对铒碲发光玻璃的发光增强机制[J]. 中国光学(中英文), 2022, 15(2): 224-232. doi: 10.37188/CO.2021-0142
CHEN Xiao-bo, LI Song, ZHAO Guo-ying, LIU Hong-Zhen, GUO Jing-hua, MA Yu, WANG Ke-zhi, GENG Zhu-feng. Luminescence enhancement mechanism of Er3+ ions by Ag@SiO2 core-shell nanostructure in tellurite glass[J]. Chinese Optics, 2022, 15(2): 224-232. doi: 10.37188/CO.2021-0142
Citation: CHEN Xiao-bo, LI Song, ZHAO Guo-ying, LIU Hong-Zhen, GUO Jing-hua, MA Yu, WANG Ke-zhi, GENG Zhu-feng. Luminescence enhancement mechanism of Er3+ ions by Ag@SiO2 core-shell nanostructure in tellurite glass[J]. Chinese Optics, 2022, 15(2): 224-232. doi: 10.37188/CO.2021-0142

Ag@SiO2纳米核壳结构对铒碲发光玻璃的发光增强机制

基金项目: 国家自然科学基金项目(No. 51972020,No. 51472028); 中央高校基本科研业务费专项资金(No. 2017TZ01)
详细信息
    作者简介:

    陈晓波(1963—),男,福建福州人,博士,北京师范大学应用光学北京重点实验室的教授、博士生导师 ,1983年、1986年与 1992年于北京大学光学专业分别获得学士、硕士和博士学位。作为项目主持人已主持完成国家级和省部级课题项目 18 项,作为第一作者在 Scientific Reports、Optics Express、Optics Letters 等发表论文上百篇,其中SCI收录77篇,被引达五百多次。已获授权第一作者国家发明专利 4 项。入选 1997 年国家自然科学基金委员会国家教育部国家财政部等七部委的首批全国“国家百千万工程”第一、二层次人才和 1995 年国家教育部“跨世纪优秀人才”等奖励或荣誉十项。E-mail: chen78xb@sina.com

  • 中图分类号: O433.1

Luminescence enhancement mechanism of Er3+ ions by Ag@SiO2 core-shell nanostructure in tellurite glass

Funds: Supported by the National Natural Science Foundation of China (No. 51972020, No. 51472028);the Fundamental Research Funds of Central Universities of China (No. 2017TZ01)
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  • 摘要: 本研究首次把预先制备好的Ag@SiO2纳米核壳结构成功地引进到碲化物发光玻璃70TeO2-25ZnO-5La2O3-0.5Er2O3体内,发现(A) Ag(1.6×10−6 mol /L)@SiO2(40 nm) @Er3+(0.5%):铒碲发光玻璃相对于样品(B) Er3+(0.5%):铒碲发光玻璃的可见光与红外光的激发光谱强度的最大增强依次为149.0%与161.5%,可见光与红外光的发光光谱强度则依次最大增强了155.2%与151.6%,同时还发现样品(A)相对于样品(B)的寿命显著变长。由于Ag@SiO2的表面等离子体吸收峰恰好位于546.0 nm,它与铒离子的发光峰546.0 nm完全共振,因此,Ag@SiO2对铒碲发光玻璃的发光共振增强作用显著。由于银的纳米核壳结构与玻璃的制作具有分步实现的优点,它既能成功控制Ag@SiO2的尺寸,而且在Ag@SiO2@Er: 铒碲发光玻璃的制作过程中还具有可操作性强的优点,同时价格也更加便宜。在保证银不被氧化的前提下,还可控制稀土离子发光中心与银的表面等离子体之间的距离,因此能够成功地减少背向能量反传递。上述优点促成了Ag@SiO2纳米核壳结构表面等离子体有效加强了Ag@SiO2@Er3+:铒碲发光玻璃的常规光致发光强度。

     

  • 图 1  Ag@SiO2水溶液的样品透射电镜形貌图

    Figure 1.  TEM morphology of Ag@SiO2 aqueous solution

    图 2  270~1800 nm波长范围内(A) Ag(1.6×10−6 mol /L) @SiO2(40 nm)@Er3+(0.5%): 铒碲发光玻璃样品(A蓝线)与(B) Er3+(0.5%): 铒碲发光玻璃样品(B红线)的吸收光谱

    Figure 2.  Absorption spectrum of (A) Ag(1.6×10−6 mol/L)@SiO2(40 nm) @Er3+(0.5%):TeZnLa glass (blue line A) and (B) Er(0.5%):TeZnLa glass (red line B) when measured from 270 nm to 1800 nm

    图 3  290~800 nm波长范围内Ag(1.50×10−3 mol/L)@SiO2(40 nm)水溶液样品的吸收谱

    Figure 3.  Absorption spectrum of the Ag(1.50×10−3 mol/L)@SiO2(40 nm) solution sample when measured from 290 nm to 800 nm

    图 4  Er3+Ag0: TeZnLa样品的能级结构与表面等离子体增强发光过程的示意图。蓝线、红线与绿线依次代表吸收、发光与共振散射增强过程。

    Figure 4.  Schematic diagram of the energy level structure and luminescence enhancement process induced by the surface plasmon of the Er3+Ag0: TeZnLa sample. The blue line, red line and green lines represent the absorption, luminescence and resonant scatter enhancement process respectively.

    图 5  (A) Ag(1.6×10−6 mol /L)@SiO2(40 nm)@Er3+(0.5%): 铒碲发光玻璃样品(A蓝线)与(B) Er(0.5%): 铒碲发光玻璃样品(B红线)在280~538 nm波长范围内可见激发光谱(接收荧光波长为550 nm)

    Figure 5.  The visible excitation spectra of (A) Ag(1.6×10−6 mol/L)@SiO2(40 nm)@Er3+(0.5%):TeZnLa glass (blue line A) and (B) Er(0.5%):TeZnLa glass (red line B) from 280 nm to 538 nm when monitored at 550 nm

    图 6  (A) Ag(1.6×10−6 mol/L)@SiO2(40 nm)@Er3+(0.5%):铒碲发光玻璃样品(A 蓝线)与(B) Er(0.5%):铒碲发光玻璃样品(B 红线)在280~850 nm波长范围内红外激发光谱(接收荧光波长为1531 mm)

    Figure 6.  The infrared excitation spectra of (A) Ag(1.6×10−6 mol/L)@SiO2(40 nm)@Er3+(0.5%):TeZnLa glass ((blue line A) and (B) Er(0.5%):TeZnLa glass (red line B) from 280 nm to 850 nm when monitored at 1531 nm

    图 7  (A) Ag(1.6×10−6 mol /L)@SiO2(40 nm)@Er3+(0.5%): 铒碲发光玻璃样品(A 蓝线)与(B) Er3+(0.5%):铒碲发光玻璃样品(B 红线)在395 nm到718 nm波长范围内可见发光光谱(激发波长为378.0 nm)

    Figure 7.  The visible luminescence spectra of (A) Ag(1.6×10−6 mol/L)@SiO2(40 nm)@Er3+(0.5%):TeZnLa glass (blue line A) and (B) Er(0.5%):TeZnLa sample (red line B) from 395 nm to 718 nm when excited by 378.0 nm

    图 8  (A)Ag(1.6×10−6 mol/L)@SiO2(40 nm)@Er3+(0.5%): 铒碲发光玻璃样品(A 蓝线)与(B) Er3+(0.5%): 铒碲发光玻璃样品(B 红线)的918 nm到1680 nm波长范围的红外发光光谱(激发波长为378.0 nm)

    Figure 8.  The infrared luminescence spectra of (A) Ag(1.6×10−6 mol/L)@SiO2(40 nm)@Er3+(0.5%):TeZnLa glass (blue line A) and (B) Er(0.5%):TeZnLa glass (red line B) from 918 nm to 1680 nm when excited by 378.0 nm

    图 9  (A) Ag(1.6×10−6 mol /L)@SiO2(40 nm)@Er3+(0.5%): 铒碲发光玻璃样品(A 蓝点)与(B) Er3+(0.5%): 铒碲发光玻璃样品(B 红点)在550.0 nm波长下的荧光寿命(激发波长为 378 nm)

    Figure 9.  The fluorescence lifetime of (A) Ag(1.6×10−6 mol /L)@SiO2(40 nm)@Er3+(0.5%):TeZnLa glass (blue dots A) and (B) Er(0.5%):TeZnLa glass (red dots B) at 550 nm luminescent wavelength were measured using a 378.0 nm pulsed xenon lamp as the pump source

    表  1  样品A与样品B的可见光与红外光的发光强度与增强倍数

    Table  1.   The luminescence intensity and the enhancement factor of the visible and infrared luminescence of sample A and sample B

    激发波长/nm发光强度×105增强数
    样品A样品B546.0 nm546.0 nm
    546.0 nm1531.0 nm546.0 nm1531.0 nm
    378.02.26158.221.50138.80150.6%150.1%
    406.50.2220.143155.2%
    520.52.09051.491.37633.96151.9%151.6%
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  • 收稿日期:  2021-07-17
  • 修回日期:  2021-08-09
  • 录用日期:  2021-11-18
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