Enhanced photoluminescence of MoS2–Au nanostructures: Nanotriangle and nanohole arrays

Jungeun Song; Soyeong Kwon; Eunah Kim; Bora Kim; Dong Wook Kim; Seong Yeon Lee; Ki Ju Yee

doi:10.1016/j.cap.2020.03.003

Enhanced photoluminescence of MoS₂–Au nanostructures: Nanotriangle and nanohole arrays

Jungeun Song, Soyeong Kwon, Eunah Kim, Bora Kim, Dong Wook Kim, Seong Yeon Lee, Ki Ju Yee

Department of Physics

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

We investigated the photoluminescence (PL) characteristics of MoS₂–Au hybrid nanostructures, fabricated by nanosphere lithography and wet-transfer techniques. Two kinds of Au nanostructures - such as nanotriangles (NTs) and nanoholes (NHs) - were fabricated for comparison. MoS₂ monolayers on both NT and NH arrays exhibited enhanced PL intensity, compared with those on SiO₂/Si substrates and flat Au thin films. Numerical simulations revealed clear distinction in the electric field intensity distributions in the NT and NH arrays at the PL excitation wavelength. Such difference could be attributed to the excitation of localized and propagating surface plasmon in the NT and NH arrays. This work helps us to understand how the plasmonic NT and NH arrays affect the physical properties of the MoS₂ monolayers on them.

Original language	English
Pages (from-to)	703-706
Number of pages	4
Journal	Current Applied Physics
Volume	20
Issue number	5
DOIs	https://doi.org/10.1016/j.cap.2020.03.003
State	Published - May 2020

Bibliographical note

Publisher Copyright:
© 2020 Korean Physical Society

Keywords

MoS
Nanosphere lithography
Nanostructures
Photoluminescence

Access to Document

10.1016/j.cap.2020.03.003

Cite this

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title = "Enhanced photoluminescence of MoS2–Au nanostructures: Nanotriangle and nanohole arrays",

abstract = "We investigated the photoluminescence (PL) characteristics of MoS2–Au hybrid nanostructures, fabricated by nanosphere lithography and wet-transfer techniques. Two kinds of Au nanostructures - such as nanotriangles (NTs) and nanoholes (NHs) - were fabricated for comparison. MoS2 monolayers on both NT and NH arrays exhibited enhanced PL intensity, compared with those on SiO2/Si substrates and flat Au thin films. Numerical simulations revealed clear distinction in the electric field intensity distributions in the NT and NH arrays at the PL excitation wavelength. Such difference could be attributed to the excitation of localized and propagating surface plasmon in the NT and NH arrays. This work helps us to understand how the plasmonic NT and NH arrays affect the physical properties of the MoS2 monolayers on them.",

keywords = "MoS, Nanosphere lithography, Nanostructures, Photoluminescence",

author = "Jungeun Song and Soyeong Kwon and Eunah Kim and Bora Kim and Kim, {Dong Wook} and Lee, {Seong Yeon} and Yee, {Ki Ju}",

note = "Publisher Copyright: {\textcopyright} 2020 Korean Physical Society",

year = "2020",

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doi = "10.1016/j.cap.2020.03.003",

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T1 - Enhanced photoluminescence of MoS2–Au nanostructures

T2 - Nanotriangle and nanohole arrays

AU - Song, Jungeun

AU - Kwon, Soyeong

AU - Kim, Eunah

AU - Kim, Bora

AU - Kim, Dong Wook

AU - Lee, Seong Yeon

AU - Yee, Ki Ju

PY - 2020/5

Y1 - 2020/5

N2 - We investigated the photoluminescence (PL) characteristics of MoS2–Au hybrid nanostructures, fabricated by nanosphere lithography and wet-transfer techniques. Two kinds of Au nanostructures - such as nanotriangles (NTs) and nanoholes (NHs) - were fabricated for comparison. MoS2 monolayers on both NT and NH arrays exhibited enhanced PL intensity, compared with those on SiO2/Si substrates and flat Au thin films. Numerical simulations revealed clear distinction in the electric field intensity distributions in the NT and NH arrays at the PL excitation wavelength. Such difference could be attributed to the excitation of localized and propagating surface plasmon in the NT and NH arrays. This work helps us to understand how the plasmonic NT and NH arrays affect the physical properties of the MoS2 monolayers on them.

AB - We investigated the photoluminescence (PL) characteristics of MoS2–Au hybrid nanostructures, fabricated by nanosphere lithography and wet-transfer techniques. Two kinds of Au nanostructures - such as nanotriangles (NTs) and nanoholes (NHs) - were fabricated for comparison. MoS2 monolayers on both NT and NH arrays exhibited enhanced PL intensity, compared with those on SiO2/Si substrates and flat Au thin films. Numerical simulations revealed clear distinction in the electric field intensity distributions in the NT and NH arrays at the PL excitation wavelength. Such difference could be attributed to the excitation of localized and propagating surface plasmon in the NT and NH arrays. This work helps us to understand how the plasmonic NT and NH arrays affect the physical properties of the MoS2 monolayers on them.

KW - MoS

KW - Nanosphere lithography

KW - Nanostructures

KW - Photoluminescence

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