Atomic-Scale Imaging and Spectroscopy of Electroluminescence at Molecular Interfaces,Chemical Reviews

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Atomic-Scale Imaging and Spectroscopy of Electroluminescence at Molecular Interfaces
Chemical Reviews ( IF 51.4 ) Pub Date : 2017-03-15 00:00:00 , DOI: 10.1021/acs.chemrev.6b00645
Klaus Kuhnke ₁ , Christoph Große ₁ , Pablo Merino ₁ , Klaus Kern _{1,

2}

Affiliation

The conversion of electric power to light is an important scientific and technological challenge. Advanced experimental methods have provided access to explore the relevant microscopic processes at the nanometer scale. Here, we review state-of-the-art studies of electroluminescence induced on the molecular scale by scanning tunneling microscopy. We discuss the generation of excited electronic states and electron–hole pairs (excitons) at molecular interfaces and address interactions between electronic states, local electromagnetic fields (tip-induced plasmons), and molecular vibrations. The combination of electronic and optical spectroscopies with atomic-scale spatial resolution is able to provide a comprehensive picture of energy conversion at the molecular level. A recently developed aspect is the characterization of electroluminescence emitters as quantum light sources, which can be studied with high time resolution, thus providing access to picosecond dynamics at the atomic scale.

中文翻译：

分子界面电致发光的原子尺度成像和光谱学

电力到光的转换是一项重要的科学技术挑战。先进的实验方法为探索纳米级的相关微观过程提供了途径。在这里，我们回顾了通过扫描隧道显微镜在分子尺度上诱导的电致发光的最新研究。我们讨论了在分子界面处激发电子态和电子-空穴对（激子）的产生，并讨论了电子态，局部电磁场（尖端感应等离子体激元）和分子振动之间的相互作用。电子和光学光谱学与原子尺度空间分辨率的结合能够在分子水平上提供能量转换的全面情况。

更新日期：2017-03-15

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