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A significant enhancement emission of Sm~(3+)-Ag~+ codoped silicate glasses under UV excitation

机译：紫外激发下Sm〜（3 +）-Ag〜+共掺杂硅酸盐玻璃的显着增强发射

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摘要

In this paper, Sm3+-doped silicate glasses containing AgNO3 were obtained by the common melting quenching method. Influence of AgNO3 concentration on the absorption and emission characteristics of Sm3+ were systematically investigated. With the increase of AgNO3 content from 0 to 3.0 wt%, the ultraviolet region absorption edge shows a slight blue-shift from 275 to 260 nm. Exciting by 255 nm, the visible emission intensity of Sm3+-doped silicate glass containing 0.5 wt% AgNO3 was about 31 times stronger than that of Sm3+ singly doped silicate glass. Fluorescence decay curves for the visible emission followed double exponential decay. Two fluorescence lifetimes were obtained, one was about 7-20 mu s which was comparable with the lifetimes of 350 nm emission which derived from Ag+, another was about 2 ms which was comparable with that of the visible emission from Sm3+ excited by 401 nm. Thus, the significant enhancement visible emission of Sm3+ excited by 255 nm can be ascribed to the energy transfer from Ag+ to Sm3+.
机译：本文采用普通的熔融淬火法制备了含AgNO3的Sm3 +掺杂硅酸盐玻璃。系统研究了AgNO3浓度对Sm3 +吸收和发射特性的影响。随着AgNO3含量从0到3.0 wt％的增加，紫外区吸收边缘显示出从275 nm到260 nm的轻微蓝移。在255 nm的激发下，含0.5 wt％AgNO3的Sm3 +掺杂硅酸盐玻璃的可见发射强度是Sm3 +掺杂硅酸盐玻璃的约31倍。可见光发射的荧光衰减曲线遵循双指数衰减。获得了两个荧光寿命，一个约为7-20μs，这与源自Ag +的350 nm发射的寿命相当，另一个约为2 ms，与被401 nm激发的Sm3 +的可见光相当。因此，由255 nm激发的Sm3 +的显着增强的可见光发射可归因于从Ag +到Sm3 +的能量转移。

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  • 来源
    《Journal of Materials Research》 |2018年第16期|2434-2439|共6页
  • 作者

    Zhang Liaolin; Xia Yu; Shen Xiao; Wei Wei;

  • 作者单位

    Jiangxi Univ Sci & Technol, Sch Mat Sci & Engn, Lanzhou 341000, Jiangxi, Peoples R China;

    Nanjing Univ Posts & Telecommun, Sch Optoelect Engn, Nanjing 210023, Jiangsu, Peoples R China;

    Nanjing Univ Posts & Telecommun, Sch Optoelect Engn, Nanjing 210023, Jiangsu, Peoples R China;

    Nanjing Univ Posts & Telecommun, Sch Optoelect Engn, Nanjing 210023, Jiangsu, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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