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Nonradiative resonant energy transfer between PbS QDs in porous matrix

机译：多孔基质中PbS量子点之间的非辐射共振能量转移

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摘要

Nonradiative fluorescence resonance energy transfer (FRET) between lead sulfide quantum dots (QDs) of two different sizes embedded in porous matrix is observed by a fluorescence spectroscopy. Analysis of decays of photoluminescence from QD mixture shows that energy transfer in studied systems is determined by static quenching, specific for direct contact between QD-donor and QD-acceptor in the QDs close-packed ensembles. From steady-state spectral analysis it was found that efficiency of energy transfer depends on the molar ratio QD-donor/QD-acceptor and energy transfer from the donor to the acceptor passes by several channels.
机译：通过荧光光谱观察到嵌入多孔基质中的两种不同尺寸的硫化铅量子点（QD）之间的非辐射荧光共振能量转移（FRET）。 QD混合物的光致发光衰减分析表明，在研究的系统中，能量转移是通过静态猝灭来确定的，该猝灭特定于QD紧密堆积的集成体中QD供体与QD受体之间的直接接触。从稳态光谱分析中发现，能量转移的效率取决于QD-给体/ QD-受体的摩尔比，从供体到受体的能量转移通过多个通道。

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  • 来源
    《Nanophotonic materials X》|2013年|88070W.1-88070W.6|共6页
  • 会议地点 San Diego CA(US)
  • 作者

    Elena V. Ushakova; Aleksandr P. Litvin; Peter S. Parfenov; Anatoly V. Fedorov; Sergei A.Cherevkov; Alexander V. Baranov;

  • 作者单位

    National Research University of Information Technologies, Mechanics and Optics, 197101, 49 Kronverkskiy Pr., Saint Petersburg, Russia;

    National Research University of Information Technologies, Mechanics and Optics, 197101, 49 Kronverkskiy Pr., Saint Petersburg, Russia;

    National Research University of Information Technologies, Mechanics and Optics, 197101, 49 Kronverkskiy Pr., Saint Petersburg, Russia;

    National Research University of Information Technologies, Mechanics and Optics, 197101, 49 Kronverkskiy Pr., Saint Petersburg, Russia;

    National Research University of Information Technologies, Mechanics and Optics, 197101, 49 Kronverkskiy Pr., Saint Petersburg, Russia;

    National Research University of Information Technologies, Mechanics and Optics, 197101, 49 Kronverkskiy Pr., Saint Petersburg, Russia;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    quantum dots; FRET; PbS; absorption and PL spectroscopy; PL decay measurement;

    机译：量子点;烦恼;铅吸收和PL光谱PL衰减测量;

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