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

被引：144

作者：

Shang, Qiuyu ^{[1
,2
]}

Zhang, Shuai ^{[3
]}

Liu, Zhen ^{[1
]}

Chen, Jie ^{[1
,3
]}

Yang, Pengfei ^{[1
]}

Li, Chun ^{[1
]}

Li, Wei ^{[4
]}

Zhang, Yanfeng ^{[1
]}

Xiong, Qihua ^{[5
]}

Liu, Xinfeng ^{[3
]}

Zhang, Qing ^{[1
,2
]}

机构：

[1] Peking Univ, Coll Engn, Dept Mat Sci & Engn, Beijing 100871, Peoples R China

[2] Peking Univ, Res Ctr Wide Gap Semicond, Beijing 100871, Peoples R China

[3] Natl Ctr Nanosci & Technol, CAS Ctr Excellence Nanosci, CAS Key Lab Standardizat & Measurement Nanotechno, Beijing 100190, Peoples R China

[4] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China

[5] Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, Singapore 637371, Singapore

来源：

NANO LETTERS | 2018年 / 18卷 / 06期

基金：

新加坡国家研究基金会; 中国国家自然科学基金;

关键词：

Surface plasmon; strong light-matter interaction; microcavity; polariton; perovskite; nanowire; OPTICAL-PROPERTIES; ROOM-TEMPERATURE; SEMICONDUCTOR MICROCAVITY; CH3NH3PBBR3; PEROVSKITE; SINGLE-CRYSTALS; SOLAR-CELLS; THIN-FILMS; WAVE-GUIDE; EMISSION; POLARITONS;

D O I：

10.1021/acs.nanolett.7b04847

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：3335 / 3343

页数：9

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