Exciton localization and drift in tailored-potential quantum nanowires
Szeszko, J.; Belykh, V. V.; Rudra, A.; Sibeldin, N. N.; Kapon, E.
2014

Abstract

Exciton recombination dynamics in tailored-potential, site-controlled AlGaAs quantum wires (QWRs) are studied. Time-resolved photoluminescence spectra evidence exciton localization in weakly disordered "uniform" QWRs, whereas deterministic bandgap grading is shown to suppress localization and promote exciton drift along the potential gradient. Measured exciton transit times between two quantum dot probes placed at opposite ends of the potential gradient yield the effective 1D exciton mobility as >1300 cm(2)/(eVs). (C) 2014 AIP Publishing LLC.

Details

Title Exciton localization and drift in tailored-potential quantum nanowires
Author(s) Szeszko, J. ; Belykh, V. V. ; Rudra, A. ; Sibeldin, N. N. ; Kapon, E.
Published in Applied Physics Letters
Pagination 4
Volume 104
Issue 26
Pages 261905
Date 2014
Publisher Melville, American Institute of Physics
ISSN 0003-6951
DOI https://doi.org/10.1063/1.4886377
Other identifier(s) View record in Web of Science
Laboratories LPN
Record Appears in Scientific production and competences > SB - School of Basic Sciences > SB Archives > LPN - Laboratory of the Physics of Nanostructures
Peer-reviewed publications
Work produced at EPFL
Journal Articles
Published
Record creation date 2014-08-29

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