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Spontaneous emission enhancement of colloidal perovskite nanocrystals by a photonic crystal cavity

机译:光子晶体腔自发增强胶体钙钛矿纳米晶体的发射

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摘要

We demonstrate coupling of lead halide perovskite nanocrystals to a nanophotonic cavity. From photoluminescence measurements, we observe a factor of 10 enhancement in brightness from the cavity mode emission. We perform room temperature time-resolved lifetime measurements that demonstrate an average spontaneous emission rate enhancement of 2.9 for perovskite nanocrystals within the cavity as compared to those located on the unpatterned surfaces. Our method provides a way towards realizing efficient light emitters and low-threshold lasers, as well as fast nonlinear optical devices, using solution processable materials.
机译:我们演示了耦合到纳米光子腔卤化钙钛矿纳米晶体。通过光致发光测量,我们观察到腔模式发射的亮度提高了10倍。我们进行了室温时间分辨的寿命测量,结果表明,与未图案化表面上的钙钛矿纳米晶体相比,空腔内钙钛矿纳米晶体的平均自发发射率提高了2.9。我们的方法提供了一种使用可溶液处理的材料实现高效发光器和低阈值激光器以及快速非线性光学器件的方法。

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  • 来源
    《Applied Physics Letters》 |2017年第22期|221104.1-221104.4|共4页
  • 作者单位

    Department of Electrical Engineering and Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, Maryland 20742, USA;

    Department of Physics, University of Maryland, Baltimore County, Baltimore, Maryland 21250, USA;

    Institute of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zuerich, Vladimir Prelog Weg 1, CH-8093 Zuerich, Switzerland,Laboratory for Thin Films and Photovoltaics, Empa-Swiss Federal Laboratories for Materials Science and Technology, UEberlandstrasse 129, CH-8600 Duebendorf, Switzerland;

    Institute of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zuerich, Vladimir Prelog Weg 1, CH-8093 Zuerich, Switzerland,Laboratory for Thin Films and Photovoltaics, Empa-Swiss Federal Laboratories for Materials Science and Technology, UEberlandstrasse 129, CH-8600 Duebendorf, Switzerland;

    Department of Electrical Engineering and Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, Maryland 20742, USA,Joint Quantum Institute, University of Maryland and National Institute of Standards and Technology, College Park, Maryland 20742, USA;

  • 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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