Journal
NANO LETTERS
Volume 18, Issue 6, Pages 3335-3343Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.7b04847
Keywords
Surface plasmon; strong light-matter interaction; microcavity; polariton; perovskite; nanowire
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Funding
- Ministry of Science and Technology [2017YFAO205700, 2017YFA0304600, 2016YFA0200700, 2017YFA0205004]
- Natural Science Foundation of China [61774003]
- open research fund program of the state key laboratory of low dimensional quantum physics [KF201604]
- National Natural Science Foundation of China [21673054]
- Key Research Program of Frontier Science, CAS [QYZDB-SSW-SYS031]
- Singapore National Research Foundation through the NRF Investigatorship Award [NRF-NRFI2015-03]
- Singapore National Research Foundation through the Competitive Research Programme [NRF-CRP14-2014-03]
- Singapore Ministry of Education via AcRF Tier 2 grants [MOE2015-T2-1-047, MOE2017-T2-1-040]
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Manipulating strong light-matter interaction in semiconductor microcavities is crucial for developing high-performance exciton polariton devices with great potential 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 anticrossing behaviors, indicating a Rabi splitting energy up to similar to 564 meV, are observed near exciton resonance in hybrid perovskite nanowire/SiO2/Ag cavity at room temperature. The exciton-photon coupling strength is enhanced by similar to 35% on average, which is mainly attributed to surface plasmon induced localized excitation field redistribution. Further, systematic studies on SiO2 thickness and nanowire 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 ultralow threshold small lasers.
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