Broadband Enhancement of Spontaneous Emission in Two-Dimensional Semiconductors Using Photonic Hypercrystals

Tal Galfsky; Zheng Sun; Christopher R. Considine; Cheng Tse Chou; Wei Chun Ko; Yi Hsien Lee; Evgenii E. Narimanov; Vinod M. Menon

doi:10.1021/acs.nanolett.6b01558

Broadband Enhancement of Spontaneous Emission in Two-Dimensional Semiconductors Using Photonic Hypercrystals

Tal Galfsky
, Zheng Sun
, Christopher R. Considine
, Cheng Tse Chou
, Wei Chun Ko
, Yi Hsien Lee^*
, Evgenii E. Narimanov
, Vinod M. Menon

^*Corresponding author for this work

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

102 Scopus citations

Abstract

The low quantum yield observed in two-dimensional semiconductors of transition metal dichalcogenides (TMDs) has motivated the quest for approaches that can enhance the light emission from these systems. Here, we demonstrate broadband enhancement of spontaneous emission and increase in Raman signature from archetype two-dimensional semiconductors: molybdenum disulfide (MoS₂) and tungsten disulfide (WS₂) by placing the monolayers in the near field of a photonic hypercrystal having hyperbolic dispersion. Hypercrystals are characterized by a large broadband photonic density of states due to hyperbolic dispersion while having enhanced light in/out coupling by a subwavelength photonic crystal lattice. This dual advantage is exploited here to enhance the light emission from the 2D TMDs and can be utilized for developing light emitters and solar cells using two-dimensional semiconductors.

Original language	English
Pages (from-to)	4940-4945
Number of pages	6
Journal	Nano Letters
Volume	16
Issue number	8
DOIs	https://doi.org/10.1021/acs.nanolett.6b01558
State	Published - 10 Aug 2016
Externally published	Yes

Keywords

2D materials
Hyperbolic metamaterials
photonic hyper crystal
plasmonics
purcell enhancement
transition metal dichalcogenides

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10.1021/acs.nanolett.6b01558

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@article{1cce66a9078a44ecaa0ccaf7e5efe8a7,

title = "Broadband Enhancement of Spontaneous Emission in Two-Dimensional Semiconductors Using Photonic Hypercrystals",

abstract = "The low quantum yield observed in two-dimensional semiconductors of transition metal dichalcogenides (TMDs) has motivated the quest for approaches that can enhance the light emission from these systems. Here, we demonstrate broadband enhancement of spontaneous emission and increase in Raman signature from archetype two-dimensional semiconductors: molybdenum disulfide (MoS2) and tungsten disulfide (WS2) by placing the monolayers in the near field of a photonic hypercrystal having hyperbolic dispersion. Hypercrystals are characterized by a large broadband photonic density of states due to hyperbolic dispersion while having enhanced light in/out coupling by a subwavelength photonic crystal lattice. This dual advantage is exploited here to enhance the light emission from the 2D TMDs and can be utilized for developing light emitters and solar cells using two-dimensional semiconductors.",

keywords = "2D materials, Hyperbolic metamaterials, photonic hyper crystal, plasmonics, purcell enhancement, transition metal dichalcogenides",

author = "Tal Galfsky and Zheng Sun and Considine, \{Christopher R.\} and Chou, \{Cheng Tse\} and Ko, \{Wei Chun\} and Lee, \{Yi Hsien\} and Narimanov, \{Evgenii E.\} and Menon, \{Vinod M.\}",

note = "Publisher Copyright: {\textcopyright} 2016 American Chemical Society.",

year = "2016",

month = aug,

day = "10",

doi = "10.1021/acs.nanolett.6b01558",

language = "英语",

volume = "16",

pages = "4940--4945",

journal = "Nano Letters",

issn = "1530-6984",

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T1 - Broadband Enhancement of Spontaneous Emission in Two-Dimensional Semiconductors Using Photonic Hypercrystals

AU - Galfsky, Tal

AU - Sun, Zheng

AU - Considine, Christopher R.

AU - Chou, Cheng Tse

AU - Ko, Wei Chun

AU - Lee, Yi Hsien

AU - Narimanov, Evgenii E.

AU - Menon, Vinod M.

PY - 2016/8/10

Y1 - 2016/8/10

N2 - The low quantum yield observed in two-dimensional semiconductors of transition metal dichalcogenides (TMDs) has motivated the quest for approaches that can enhance the light emission from these systems. Here, we demonstrate broadband enhancement of spontaneous emission and increase in Raman signature from archetype two-dimensional semiconductors: molybdenum disulfide (MoS2) and tungsten disulfide (WS2) by placing the monolayers in the near field of a photonic hypercrystal having hyperbolic dispersion. Hypercrystals are characterized by a large broadband photonic density of states due to hyperbolic dispersion while having enhanced light in/out coupling by a subwavelength photonic crystal lattice. This dual advantage is exploited here to enhance the light emission from the 2D TMDs and can be utilized for developing light emitters and solar cells using two-dimensional semiconductors.

AB - The low quantum yield observed in two-dimensional semiconductors of transition metal dichalcogenides (TMDs) has motivated the quest for approaches that can enhance the light emission from these systems. Here, we demonstrate broadband enhancement of spontaneous emission and increase in Raman signature from archetype two-dimensional semiconductors: molybdenum disulfide (MoS2) and tungsten disulfide (WS2) by placing the monolayers in the near field of a photonic hypercrystal having hyperbolic dispersion. Hypercrystals are characterized by a large broadband photonic density of states due to hyperbolic dispersion while having enhanced light in/out coupling by a subwavelength photonic crystal lattice. This dual advantage is exploited here to enhance the light emission from the 2D TMDs and can be utilized for developing light emitters and solar cells using two-dimensional semiconductors.

KW - 2D materials

KW - Hyperbolic metamaterials

KW - photonic hyper crystal

KW - plasmonics

KW - purcell enhancement

KW - transition metal dichalcogenides

UR - https://www.scopus.com/pages/publications/84981295765

U2 - 10.1021/acs.nanolett.6b01558

DO - 10.1021/acs.nanolett.6b01558

M3 - 文章

AN - SCOPUS:84981295765

SN - 1530-6984

VL - 16

SP - 4940

EP - 4945

JO - Nano Letters

JF - Nano Letters

IS - 8

ER -

Broadband Enhancement of Spontaneous Emission in Two-Dimensional Semiconductors Using Photonic Hypercrystals

Abstract

Keywords

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