Nanowire dimer optical antenna brightens the surface defects of silicon-Reference-Cited by-同舟云学术

Nanowire dimer optical antenna brightens the surface defects of silicon

Published:2023-03-15 Issue:9 Volume:12 Page:1723-1731
ISSN:2192-8614
Container-title:Nanophotonics
language:en
Short-container-title:

Author:

Li Ze¹²,You Qingzhang¹,Wang Hui¹,Zhang Lisheng¹^ORCID,Zhang Duan¹³,Jia Shangtong⁴,Fang Yan¹,Wang Peijie¹^ORCID

Affiliation:

1. The Beijing Key Laboratory for Nano-Photonics and Nano-Structure, Department of Physics , Capital Normal University , Beijing 100048 , China

2. Key Laboratory of Semiconductor Photovoltaic Technology of Inner Mongolia Autonomous Region, School of Physical Science and Technology , Inner Mongolia University , Hohhot 010021 , China

3. Elementary Educational College , Capital Normal University , Beijing 100048 , China

4. State Key Laboratory for Mesoscopic Physics School of Physics , Peking University , Beijing 100871 , China

Abstract

Abstract Plasmonic hot spots located between metallic dimer nanostructures have been utilized comprehensively to achieve efficient light emission. However, different from the enhancement occurred in the plasmonic hot spot, the investigation of light emission off the hot spot on submicron scale remains challenge. In this work, we have constructed a plasmonic nanowire dimer (NWD) system to brighten the light emission of the surface defects of silicon off the hot spot on the submicron scale. The NWD can trap light through plasmonic gap, then, the excited emitter on the submicron scale can radiate light efficiently by coupling with the dipole gap plasmonic mode. Furthermore, the coupling of dipole plasmonic mode with the emitters can be tuned by changing the gap size, and then photoluminescence emission was drastically enhanced up to 126 folds. Theoretical simulations reveal the photoluminescence enhancement arises from the combination of the NWD’s high radiation efficiency, Purcell enhancement, efficient redirection of the emitted photoluminescence and the excitation enhancement. In this study, the photoluminescence signal can be effectively enhanced by placing nano-antenna patch on the detected low-quantum-efficiency emitters, which may open up a pathway toward controlling plasmonic gap mode enhanced light emission off the hot spot on submicron scale.

Funder

National Natural Science Foundation of China

The Inner Mongolia University

Publisher

Walter de Gruyter GmbH

Subject

Electrical and Electronic Engineering,Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials,Biotechnology

Link

https://www.degruyter.com/document/doi/10.1515/nanoph-2022-0742/pdf

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