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首页> 外文期刊>RSC Advances >Facile synthesis of Ag-doped ZnCdS nanocrystals and transformation into Ag-doped ZnCdSSe nanocrystals with Se treatment
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Facile synthesis of Ag-doped ZnCdS nanocrystals and transformation into Ag-doped ZnCdSSe nanocrystals with Se treatment

机译：用SE处理将Ag掺杂ZnCds纳米晶体和转化成Ag掺杂ZnCdsse纳米晶体的改性

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摘要

High-quality, pure, and color-tunable Ag:ZnCdS quantum dots (d-dots) are prepared by optimization of the experimental conditions including Ag-doping concentration and Zn/Cd precursor ratio. Highly emissive Ag:ZnCdS/ZnS core/shell d-dots with photoluminescence quantum yield (PL QY) as high as 58% are constructed in situ by the growth of a ZnS shell around the crude Ag: ZnCdS solution, which is the highest PL QY reported to date for Ag-based semiconductor d-dots. The emission color of a Ag: ZnCdS d-dot can be tuned toward a larger red region by simple Se treatment at high temperature (220-260 degrees C). With Se treatment, Ag: ZnCdS alloyed d-dots are transformed into Ag:ZnCdSSe alloyed d-dots, and the corresponding optical changes of d-dots in this process are investigated systematically. This strategy provides a versatile approach for the preparation of other multinary semiconductor nanocrystals.
机译：通过优化包括Ag掺杂浓度和Zn / Cd前体比的实验条件，制备高质量，纯和颜色可调谐AG：ZnCD量子点（D点）。 高精度AG：具有光致发光量子产率（PLQY）的ZnCds / ZnS核/壳D点，高达58％，原位构建了粗糙AG周围的ZnS壳的生长：ZnCds溶液，这是最高PL QY向基于AG的半导体D-DOTS举行了迄今为止。 AG的发光颜色：通过在高温（220-260℃）下简单的SE处理可以通过简单的SE处理来调谐ZnCds D-点。 通过SE处理，AG：ZnCDS合金D点被转化为AG：ZnCdsse合金D点，并系统地研究了该过程中D点的相应光学变化。 该策略提供了一种用于制备其他多元半导体纳米晶体的多功能方法。

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  • 来源
    《RSC Advances》 |2015年第2期|共8页
  • 作者

    Zeng Ruosheng; Sun Zhiguo; Cao Sheng; Shen Rongan; Liu Zuoji; Xiong Ying; Long Jingtao; Zheng Jinju; Zhao Yunqiang; Shen Yayun; Wang Dingsheng;

  • 作者单位

    Guizhou Normal Univ Sch Chem &

    Mat Sci Key Lab Funct Mat Chem Guizhou Prov Guiyang 550001 Peoples R China;

    Guizhou Normal Univ Sch Chem &

    Mat Sci Key Lab Funct Mat Chem Guizhou Prov Guiyang 550001 Peoples R China;

    Ningbo Univ Technol Inst Mat Ningbo 315016 Zhejiang Peoples R China;

    Guizhou Normal Univ Sch Chem &

    Mat Sci Key Lab Funct Mat Chem Guizhou Prov Guiyang 550001 Peoples R China;

    Guizhou Normal Univ Sch Chem &

    Mat Sci Key Lab Funct Mat Chem Guizhou Prov Guiyang 550001 Peoples R China;

    Guizhou Normal Univ Sch Chem &

    Mat Sci Key Lab Funct Mat Chem Guizhou Prov Guiyang 550001 Peoples R China;

    Guizhou Normal Univ Sch Chem &

    Mat Sci Key Lab Funct Mat Chem Guizhou Prov Guiyang 550001 Peoples R China;

    Ningbo Univ Technol Inst Mat Ningbo 315016 Zhejiang Peoples R China;

    Guizhou Normal Univ Sch Chem &

    Mat Sci Key Lab Funct Mat Chem Guizhou Prov Guiyang 550001 Peoples R China;

    Guizhou Normal Univ Sch Chem &

    Mat Sci Key Lab Funct Mat Chem Guizhou Prov Guiyang 550001 Peoples R China;

    Tsinghua Univ Dept Chem Beijing 100084 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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