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Advances in Quantum-Confined Perovskite Nanocrystals for Optoelectronics

机译：量子限制的钙钛矿光电子纳米晶体的研究进展

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摘要

Metal halide perovskites have emerged as a promising new class of layered semiconductor material for light-emitting and photovoltaic applications owing to their outstanding optical and optoelectronic properties. In nanocrystalline form, these layered perovskites exhibit extremely high photoluminescence quantum yields (PLQYs) and show quantum confinement effects analogous to conventional semiconductors when their dimensions are reduced to sizes comparable to their respective exciton Bohr radii. The reduction in size leads to strongly blueshifted photoluminescence and large exciton binding energies up to several hundreds of meV. This not only makes them interesting for optoelectronic devices, but also enables complex architectures based on cascaded energy transfer. Here, an overview of the current state-of-the-art of quantum confinement effects in perovskite nanocrystals is provided, with a focus on synthetic strategies and resulting optical properties, characterization methods, and emerging applications.
机译：金属卤化物钙钛矿由于其出色的光学和光电特性，已成为一种有前途的新型发光半导体层状半导体材料。这些层状钙钛矿以纳米晶形式显示出极高的光致发光量子产率（PLQYs），并且当它们的尺寸减小到与其各自的激子玻尔半径相当的尺寸时，表现出类似于常规半导体的量子约束效应。尺寸的减小导致强烈的蓝移光致发光和高达数百meV的大的激子结合能。这不仅使它们对于光电器件很有趣，而且使基于级联能量传输的复杂体系结构成为可能。在此，概述了钙钛矿纳米晶体中当前的最新量子限制效应，重点是合成策略和所得的光学性质，表征方法和新兴应用。

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  • 来源
    《Advanced energy materials》 |2017年第16期|1700267.1-1700267.9|共9页
  • 作者

    Polavarapu Lakshminarayana; Nickel Bert; Feldmann Jochen; Urban Alexander S.;

  • 作者单位

    Ludwig Maximilians Univ Munchen, Dept Phys, Chair Photon & Optoelect, Amalienstr 54, D-80799 Munich, Germany|Ludwig Maximilians Univ Munchen, Dept Phys, Ctr Nanosci CeNS, Amalienstr 54, D-80799 Munich, Germany|Nanosyst Initiat Munich, Schellingstr 4, D-80799 Munich, Germany;

    Ludwig Maximilians Univ Munchen, Dept Phys, Soft Condensed Matter Grp, Geschwister Scholl Pl 1, D-80539 Munich, Germany|Ludwig Maximilians Univ Munchen, Dept Phys, Ctr Nanosci CeNS, Geschwister Scholl Pl 1, D-80539 Munich, Germany|Nanosyst Initiat Munich, Schellingstr 4, D-80799 Munich, Germany;

    Ludwig Maximilians Univ Munchen, Dept Phys, Chair Photon & Optoelect, Amalienstr 54, D-80799 Munich, Germany|Ludwig Maximilians Univ Munchen, Dept Phys, Ctr Nanosci CeNS, Amalienstr 54, D-80799 Munich, Germany|Nanosyst Initiat Munich, Schellingstr 4, D-80799 Munich, Germany;

    Ludwig Maximilians Univ Munchen, Dept Phys, Chair Photon & Optoelect, Amalienstr 54, D-80799 Munich, Germany|Ludwig Maximilians Univ Munchen, Dept Phys, Ctr Nanosci CeNS, Amalienstr 54, D-80799 Munich, Germany|Nanosyst Initiat Munich, Schellingstr 4, D-80799 Munich, Germany;

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  • 正文语种 eng
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  • 关键词

    nanocrystals; perovskite; photoluminescence; quantum confinement;

    机译：纳米晶体;钙钛矿;光致发光;量子约束;

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