Enhancing the optical excitation efficiency of a single self-assembled quantum dot with a plasmonic nanoantenna

Markus Pfeiffer; Klas Lindfors; Christian Wolpert; Paola Atkinson; Mohamed Benyoucef; Armando Rastelli; Oliver G Schmidt; Harald Giessen; Markus Lippitz

doi:10.1021/nl102548t

Enhancing the optical excitation efficiency of a single self-assembled quantum dot with a plasmonic nanoantenna

Nano Lett. 2010 Nov 10;10(11):4555-8. doi: 10.1021/nl102548t.

Authors

Markus Pfeiffer¹, Klas Lindfors, Christian Wolpert, Paola Atkinson, Mohamed Benyoucef, Armando Rastelli, Oliver G Schmidt, Harald Giessen, Markus Lippitz

Affiliation

¹ 4th Physics Institute and Research Center SCOPE, University of Stuttgart, Pfaffenwaldring 57, D-70550 Stuttgart, Germany.

PMID: 20964391
DOI: 10.1021/nl102548t

Abstract

We demonstrate how the controlled positioning of a plasmonic nanoparticle modifies the photoluminescence of a single epitaxial GaAs quantum dot. The antenna particle leads to an increase of the luminescence intensity by about a factor of 8. Spectrally and temporally resolved photoluminescence measurements prove an increase of the quantum dot’s excitation rate.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Crystallization / methods*
Light
Lighting / methods*
Materials Testing
Quantum Dots*
Radiation Dosage
Surface Plasmon Resonance / methods*