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Surface-passivation effects on the photoluminescence enhancement in ZnS:Mn nanoparticles by ultraviolet irradiation with oxygen bubbling

机译:表面钝化对氧气鼓泡紫外线照射下ZnS:Mn纳米粒子光致发光增强的影响

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摘要

This study examined the effects of surface-passivation on the photoluminescence (PL) properties of ZnS:Mn nanoparticles treated by ultraviolet (UV) irradiation with oxygen bubbling. Compared to the pristine Mn-doped zinc-sulfide nanocrystals (quantum efficiency: -16%), the UV-irradiated ZnS:Mn showed significantly enhanced luminescence properties (quantum efficiency: ~35%). The photoinduced surface passivation was characterized by x-ray diffraction, x-ray photoelectron spectroscopy, and time-resolved PL. The optimum thickness of the passivation layer for the quantum efficiency was examined considering the nanocrystal size, local strain, and radiativeonradiative recombination rates.
机译:这项研究检查了表面钝化对用氧气起泡的紫外线(UV)辐射处理的ZnS:Mn纳米颗粒的光致发光(PL)性能的影响。与原始锰掺杂的硫化锌纳米晶体相比(量子效率:-16%),紫外线辐射的ZnS:Mn表现出显着增强的发光性能(量子效率:〜35%)。通过X射线衍射,X射线光电子能谱和时间分辨的PL来表征光诱导的表面钝化。考虑到纳米晶体的尺寸,局部应变以及辐射/非辐射复合速率,研究了用于量子效率的钝化层的最佳厚度。

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  • 来源
    《Applied Physicsletters》 |2010年第21期|P.211908.1-211908.3|共3页
  • 作者单位

    Department of Materials Science and Engineering and Research Center for Energy Conversion and Storage, Seoul National University, Seoul 151-744, Republic of Korea;

    rnDepartment of Materials Science and Engineering and Research Center for Energy Conversion and Storage, Seoul National University, Seoul 151-744, Republic of Korea;

    rnDepartment of Materials Science and Engineering and Research Center for Energy Conversion and Storage, Seoul National University, Seoul 151-744, Republic of Korea;

  • 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);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

  • 入库时间 2022-08-18 03:18:50

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