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White light emission from quantum well structured quantum dots

机译:量子结构良好的量子点发出的白光

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摘要

Four-layer quantum well quantum dots (QWQPs) with structure of CdS/ZnS/CdS/ZnS were synthesized using a reverse micelle process. White light emission can be achieved by this type of QWQD, as the blue and green/orange emission components were originated from CdS core and ZnS inner shell, respectively. The emission spectra of QWQDs can be adjusted by varying the water-to-surfactant ratios in the reverse micelle process which controls the particle size and core/shell nanostructure of QWQDs. Efficient luminescence with PL quantum yield up to 30% can be achieved, due to the effective suppression of non-radiative relaxations from the Auger recombination with the quantum well structure.
机译:采用逆胶束法合成了具有CdS / ZnS / CdS / ZnS结构的四层量子阱量子点(QWQPs)。通过这种类型的QWQD可以实现白光发射,因为蓝色和绿色/橙色发射分量分别来自CdS内核和ZnS内壳。可以通过在反胶束过程中改变水与表面活性剂的比例来调节QWQD的发射光谱,该过程控制QWQD的粒径和核/壳纳米结构。由于有效地抑制了俄歇复合体与量子阱结构产生的非辐射弛豫,可以实现PL量子产率高达30%的高效发光。

著录项

  • 来源
    《Materials Science and Engineering》 |2015年第3期|1-3|共3页
  • 作者单位

    Key Lab for Special Functional Materials of Ministry of Education, Henan University, Kaifeng 475004, PR China;

    Key Lab for Special Functional Materials of Ministry of Education, Henan University, Kaifeng 475004, PR China;

    Key Lab for Special Functional Materials of Ministry of Education, Henan University, Kaifeng 475004, PR China;

    Key Lab for Special Functional Materials of Ministry of Education, Henan University, Kaifeng 475004, PR China;

    Key Lab for Special Functional Materials of Ministry of Education, Henan University, Kaifeng 475004, PR China;

    School of Optoelectonics, Beijing Institute of Technology, Beijing 100081, PR China;

    School of Optoelectonics, Beijing Institute of Technology, Beijing 100081, PR China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Nanoparticle; Luminescence; Optical materials and properties;

    机译:纳米粒子发光;光学材料和性能;

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