Energy and charge transfer effects in two-dimensional van der Waals hybrid nanostructures on periodic gold nanopost array

Jun Young Kim, Sun Gyu Kim, Jong Won Youn, Yongjun Lee, Jeongyong Kim, Jinsoo Joo

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Two-dimensional (2D) semiconducting MoS2 and WSe2 flakes grown by chemical vapor deposition were mechanically hybridized. A hexagonal boron nitride (h-BN) dielectric flake was inserted between MoS2 and WSe2 flakes to investigate the nanoscale optical properties of 2D van der Waals hybrid nanostructures. The fabricated MoS2/WSe2 and MoS2/h-BN/WSe2 van der Waals hybrid nanostructures were loaded on a periodic gold nanopost (Au-NPo) array to study energy and charge transfer effects at the surface plasmon resonance (SPR) condition. Nanoscale photoluminescence (PL) spectra of the 2D hybrid nanostructures were measured using a high-resolution laser confocal microscope (LCM). A shift of the LCM PL peak of the MoS2/WSe2 n-p hybrid nanostructures was observed owing to the charge transfer. In contrast, the shift of the LCM PL peak of the MoS2/h-BN/WSe2 n-insulator-p hybrid nanostructure was not considerable, as the inserted h-BN dielectric layer prevented the charge transfer. The intensity of the LCM PL peak of the MoS2/h-BN/WSe2 hybrid nanostructure considerably increased once the nanostructure was loaded on the Au-NPo array, owing to the energy transfer between the 2D materials and the Au-NPo array at the SPR condition, which was confirmed by the increase in the LCM Raman intensity.

Original languageEnglish
Article number193101
JournalApplied Physics Letters
Volume112
Issue number19
DOIs
Publication statusPublished - 2018 May 7

Fingerprint

boron nitrides
energy transfer
microscopes
charge transfer
gold
flakes
photoluminescence
lasers
surface plasmon resonance
shift
insulators
vapor deposition
optical properties
high resolution

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Energy and charge transfer effects in two-dimensional van der Waals hybrid nanostructures on periodic gold nanopost array. / Kim, Jun Young; Kim, Sun Gyu; Youn, Jong Won; Lee, Yongjun; Kim, Jeongyong; Joo, Jinsoo.

In: Applied Physics Letters, Vol. 112, No. 19, 193101, 07.05.2018.

Research output: Contribution to journalArticle

Kim, Jun Young ; Kim, Sun Gyu ; Youn, Jong Won ; Lee, Yongjun ; Kim, Jeongyong ; Joo, Jinsoo. / Energy and charge transfer effects in two-dimensional van der Waals hybrid nanostructures on periodic gold nanopost array. In: Applied Physics Letters. 2018 ; Vol. 112, No. 19.
@article{c0181c1247e249daa554bcd34cad3eec,
title = "Energy and charge transfer effects in two-dimensional van der Waals hybrid nanostructures on periodic gold nanopost array",
abstract = "Two-dimensional (2D) semiconducting MoS2 and WSe2 flakes grown by chemical vapor deposition were mechanically hybridized. A hexagonal boron nitride (h-BN) dielectric flake was inserted between MoS2 and WSe2 flakes to investigate the nanoscale optical properties of 2D van der Waals hybrid nanostructures. The fabricated MoS2/WSe2 and MoS2/h-BN/WSe2 van der Waals hybrid nanostructures were loaded on a periodic gold nanopost (Au-NPo) array to study energy and charge transfer effects at the surface plasmon resonance (SPR) condition. Nanoscale photoluminescence (PL) spectra of the 2D hybrid nanostructures were measured using a high-resolution laser confocal microscope (LCM). A shift of the LCM PL peak of the MoS2/WSe2 n-p hybrid nanostructures was observed owing to the charge transfer. In contrast, the shift of the LCM PL peak of the MoS2/h-BN/WSe2 n-insulator-p hybrid nanostructure was not considerable, as the inserted h-BN dielectric layer prevented the charge transfer. The intensity of the LCM PL peak of the MoS2/h-BN/WSe2 hybrid nanostructure considerably increased once the nanostructure was loaded on the Au-NPo array, owing to the energy transfer between the 2D materials and the Au-NPo array at the SPR condition, which was confirmed by the increase in the LCM Raman intensity.",
author = "Kim, {Jun Young} and Kim, {Sun Gyu} and Youn, {Jong Won} and Yongjun Lee and Jeongyong Kim and Jinsoo Joo",
year = "2018",
month = "5",
day = "7",
doi = "10.1063/1.5023997",
language = "English",
volume = "112",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics Publising LLC",
number = "19",

}

TY - JOUR

T1 - Energy and charge transfer effects in two-dimensional van der Waals hybrid nanostructures on periodic gold nanopost array

AU - Kim, Jun Young

AU - Kim, Sun Gyu

AU - Youn, Jong Won

AU - Lee, Yongjun

AU - Kim, Jeongyong

AU - Joo, Jinsoo

PY - 2018/5/7

Y1 - 2018/5/7

N2 - Two-dimensional (2D) semiconducting MoS2 and WSe2 flakes grown by chemical vapor deposition were mechanically hybridized. A hexagonal boron nitride (h-BN) dielectric flake was inserted between MoS2 and WSe2 flakes to investigate the nanoscale optical properties of 2D van der Waals hybrid nanostructures. The fabricated MoS2/WSe2 and MoS2/h-BN/WSe2 van der Waals hybrid nanostructures were loaded on a periodic gold nanopost (Au-NPo) array to study energy and charge transfer effects at the surface plasmon resonance (SPR) condition. Nanoscale photoluminescence (PL) spectra of the 2D hybrid nanostructures were measured using a high-resolution laser confocal microscope (LCM). A shift of the LCM PL peak of the MoS2/WSe2 n-p hybrid nanostructures was observed owing to the charge transfer. In contrast, the shift of the LCM PL peak of the MoS2/h-BN/WSe2 n-insulator-p hybrid nanostructure was not considerable, as the inserted h-BN dielectric layer prevented the charge transfer. The intensity of the LCM PL peak of the MoS2/h-BN/WSe2 hybrid nanostructure considerably increased once the nanostructure was loaded on the Au-NPo array, owing to the energy transfer between the 2D materials and the Au-NPo array at the SPR condition, which was confirmed by the increase in the LCM Raman intensity.

AB - Two-dimensional (2D) semiconducting MoS2 and WSe2 flakes grown by chemical vapor deposition were mechanically hybridized. A hexagonal boron nitride (h-BN) dielectric flake was inserted between MoS2 and WSe2 flakes to investigate the nanoscale optical properties of 2D van der Waals hybrid nanostructures. The fabricated MoS2/WSe2 and MoS2/h-BN/WSe2 van der Waals hybrid nanostructures were loaded on a periodic gold nanopost (Au-NPo) array to study energy and charge transfer effects at the surface plasmon resonance (SPR) condition. Nanoscale photoluminescence (PL) spectra of the 2D hybrid nanostructures were measured using a high-resolution laser confocal microscope (LCM). A shift of the LCM PL peak of the MoS2/WSe2 n-p hybrid nanostructures was observed owing to the charge transfer. In contrast, the shift of the LCM PL peak of the MoS2/h-BN/WSe2 n-insulator-p hybrid nanostructure was not considerable, as the inserted h-BN dielectric layer prevented the charge transfer. The intensity of the LCM PL peak of the MoS2/h-BN/WSe2 hybrid nanostructure considerably increased once the nanostructure was loaded on the Au-NPo array, owing to the energy transfer between the 2D materials and the Au-NPo array at the SPR condition, which was confirmed by the increase in the LCM Raman intensity.

UR - http://www.scopus.com/inward/record.url?scp=85046888264&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85046888264&partnerID=8YFLogxK

U2 - 10.1063/1.5023997

DO - 10.1063/1.5023997

M3 - Article

AN - SCOPUS:85046888264

VL - 112

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

IS - 19

M1 - 193101

ER -