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arXiv · 1711.05061

Surface Plasmon Enhanced Strong Exciton-Photon Coupling in Hybrid Inorganic-Organic Perovskites Nanowires

Qiuyu Shang·Shuai Zhang·Jie Chen·Pengfei Yang·Wei Li·Yanfeng Zhang·Qihua Xiong·Xinfeng Liu·Qing Zhang
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Abstract

Manipulating strong light-matter interaction in semiconductor microcavities is crucial for developing high-performance exciton polariton devices with great potentials in next-generation all-solid state quantum technologies. In this work, we report surface plasmon enhanced strong exciton-photon interaction in CH3NH3PbBr3 perovskite nanowires. Characteristic anti-crossing behaviors, indicating Rabi splitting energy up to ~ 560 meV, are observed near exciton resonance in hybrid semiconductor-insulator-metallic waveguide cavity at room temperature. An exciton-photon coupling strength enhancement factor of ~ 1.4 times is evaluated, which is mainly attributed to surface plasmon induced localized excitation field redistribution. Further, systematic studies on nanowires and insulator dimension dependence of exciton-photon interaction are presented. These results provide new avenues to achieve extremely high coupling strengths and push forward the development of electrically pumped and ultra-low threshold small lasers.

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Qiuyu Shang, Shuai Zhang, Jie Chen, Pengfei Yang, Wei Li, Yanfeng Zhang, Qihua Xiong, Xinfeng Liu, Qing Zhang. 2017-11-14. Surface Plasmon Enhanced Strong Exciton-Photon Coupling in Hybrid Inorganic-Organic Perovskites Nanowires. https://doi.org/10.1021/acs.nanolett.7b04847

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