Localized exciton modes and high quantum efficiency of a quantum emitter close to a MoS2 nanodisk

Localized exciton modes and high quantum efficiency of a quantum emitter close to a MoS2 nanodisk The total and radiative spontaneous emission (SE) rates of a quantum emitter (QE) are enhanced several orders of magnitudes in the presence of a MoS2 nanodisk, compared to their free space value, by exciting localized exciton polariton modes. The quantum efficiency can reach values above 24%, at emission energies where the dipole resonance is excited, for small values of the material damping parameters. The radiative emission rate is enhanced 565 times compared to its free-space value. Two set of sharp resonances of the SE rate emerge, which are connected with the excitation of the exciton energies of the MoS2 nanodisk. When the emission energy is in the halo, between the first two peaks of the normalized SE rate, the quantum efficiency has its largest value of 53%, where the radiative emission is enhanced 4.3 times compared to the free-space value. The high values for the quantum efficiency are sustained over distances up to 40nm, where the radiative spontaneous emission can compete with the nonradiative emission. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review B American Physical Society (APS)

Localized exciton modes and high quantum efficiency of a quantum emitter close to a MoS2 nanodisk

Preview Only

Localized exciton modes and high quantum efficiency of a quantum emitter close to a MoS2 nanodisk

Abstract

The total and radiative spontaneous emission (SE) rates of a quantum emitter (QE) are enhanced several orders of magnitudes in the presence of a MoS2 nanodisk, compared to their free space value, by exciting localized exciton polariton modes. The quantum efficiency can reach values above 24%, at emission energies where the dipole resonance is excited, for small values of the material damping parameters. The radiative emission rate is enhanced 565 times compared to its free-space value. Two set of sharp resonances of the SE rate emerge, which are connected with the excitation of the exciton energies of the MoS2 nanodisk. When the emission energy is in the halo, between the first two peaks of the normalized SE rate, the quantum efficiency has its largest value of 53%, where the radiative emission is enhanced 4.3 times compared to the free-space value. The high values for the quantum efficiency are sustained over distances up to 40nm, where the radiative spontaneous emission can compete with the nonradiative emission.
Loading next page...
 
/lp/aps_physical/localized-exciton-modes-and-high-quantum-efficiency-of-a-quantum-g4t44OGASD
Publisher
The American Physical Society
Copyright
Copyright © ©2017 American Physical Society
ISSN
1098-0121
eISSN
1550-235X
D.O.I.
10.1103/PhysRevB.96.041404
Publisher site
See Article on Publisher Site

Abstract

The total and radiative spontaneous emission (SE) rates of a quantum emitter (QE) are enhanced several orders of magnitudes in the presence of a MoS2 nanodisk, compared to their free space value, by exciting localized exciton polariton modes. The quantum efficiency can reach values above 24%, at emission energies where the dipole resonance is excited, for small values of the material damping parameters. The radiative emission rate is enhanced 565 times compared to its free-space value. Two set of sharp resonances of the SE rate emerge, which are connected with the excitation of the exciton energies of the MoS2 nanodisk. When the emission energy is in the halo, between the first two peaks of the normalized SE rate, the quantum efficiency has its largest value of 53%, where the radiative emission is enhanced 4.3 times compared to the free-space value. The high values for the quantum efficiency are sustained over distances up to 40nm, where the radiative spontaneous emission can compete with the nonradiative emission.

Journal

Physical Review BAmerican Physical Society (APS)

Published: Jul 10, 2017

There are no references for this article.

Sorry, we don’t have permission to share this article on DeepDyve,
but here are related articles that you can start reading right now:

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create lists to
organize your research

Export lists, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off