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Title: Leveraging Nanocavity Harmonics for Control of Optical Processes in 2D Semiconductors

Optical cavities with multiple tunable resonances have the potential to provide unique electromagnetic environments at two or more distinct wavelengths–critical for control of optical processes such as nonlinear generation, entangled photon generation, or photoluminescence (PL) enhancement. Here, we show a plasmonic nanocavity based on a nanopatch antenna design that has two tunable resonant modes in the visible spectrum separated by 350 nm and with line widths of ~60 nm. The importance of utilizing two resonances simultaneously is demonstrated by integrating monolayer MoS 2, a two-dimensional semiconductor, into the colloidally synthesized nanocavities. Here, we observe a 2000-fold enhancement in the PL intensity of MoS 2– which has intrinsically low absorption and small quantum yield–at room temperature, enabled by the combination of tailored absorption enhancement at the first harmonic and PL quantum-yield enhancement at the fundamental resonance.
Authors:
 [1] ;  [2] ;  [3] ;  [1] ;  [2] ;  [2] ;  [1] ;  [2] ;  [1]
  1. Duke Univ., Durham, NC (United States)
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  3. Duke Univ., Durham, NC (United States); Univ. of Nebraska-Lincoln, Lincoln, NE (United States)
Publication Date:
Grant/Contract Number:
SC0001088
Type:
Published Article
Journal Name:
Nano Letters
Additional Journal Information:
Journal Volume: 15; Journal Issue: 5; Related Information: CE partners with Massachusetts Institute of Technology (lead); Brookhaven National Laboratory; Harvard University; Journal ID: ISSN 1530-6984
Publisher:
American Chemical Society
Research Org:
Energy Frontier Research Centers (EFRC), Washington, D.C. (United States). Center for Excitonics (CE)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; solar (photovoltaic); solid state lighting; photosynthesis (natural and artificial); charge transport; optics; synthesis (novel materials); synthesis (self-assembly); synthesis (scalable processing)
OSTI Identifier:
1179500
Alternate Identifier(s):
OSTI ID: 1210697

Akselrod, Gleb M., Ming, Tian, Argyropoulos, Christos, Hoang, Thang B., Lin, Yuxuan, Ling, Xi, Smith, David R., Kong, Jing, and Mikkelsen, Maiken H.. Leveraging Nanocavity Harmonics for Control of Optical Processes in 2D Semiconductors. United States: N. p., Web. doi:10.1021/acs.nanolett.5b01062.
Akselrod, Gleb M., Ming, Tian, Argyropoulos, Christos, Hoang, Thang B., Lin, Yuxuan, Ling, Xi, Smith, David R., Kong, Jing, & Mikkelsen, Maiken H.. Leveraging Nanocavity Harmonics for Control of Optical Processes in 2D Semiconductors. United States. doi:10.1021/acs.nanolett.5b01062.
Akselrod, Gleb M., Ming, Tian, Argyropoulos, Christos, Hoang, Thang B., Lin, Yuxuan, Ling, Xi, Smith, David R., Kong, Jing, and Mikkelsen, Maiken H.. 2015. "Leveraging Nanocavity Harmonics for Control of Optical Processes in 2D Semiconductors". United States. doi:10.1021/acs.nanolett.5b01062.
@article{osti_1179500,
title = {Leveraging Nanocavity Harmonics for Control of Optical Processes in 2D Semiconductors},
author = {Akselrod, Gleb M. and Ming, Tian and Argyropoulos, Christos and Hoang, Thang B. and Lin, Yuxuan and Ling, Xi and Smith, David R. and Kong, Jing and Mikkelsen, Maiken H.},
abstractNote = {Optical cavities with multiple tunable resonances have the potential to provide unique electromagnetic environments at two or more distinct wavelengths–critical for control of optical processes such as nonlinear generation, entangled photon generation, or photoluminescence (PL) enhancement. Here, we show a plasmonic nanocavity based on a nanopatch antenna design that has two tunable resonant modes in the visible spectrum separated by 350 nm and with line widths of ~60 nm. The importance of utilizing two resonances simultaneously is demonstrated by integrating monolayer MoS2, a two-dimensional semiconductor, into the colloidally synthesized nanocavities. Here, we observe a 2000-fold enhancement in the PL intensity of MoS2– which has intrinsically low absorption and small quantum yield–at room temperature, enabled by the combination of tailored absorption enhancement at the first harmonic and PL quantum-yield enhancement at the fundamental resonance.},
doi = {10.1021/acs.nanolett.5b01062},
journal = {Nano Letters},
number = 5,
volume = 15,
place = {United States},
year = {2015},
month = {4}
}