Dark exciton optical spectroscopy of a semiconducting quantum dot embedded in a nanowire

Gregory Sallen; Adrien Tribu; Thomas Aichele; Régis André; Lucien Besombes; Catherine Bougerol-Chaillout; Serge Tatarenko; Kuntheak Kheng; Jean-Philippe Poizat

doi:10.1103/PhysRevB.80.085310

Dark exciton optical spectroscopy of a semiconducting quantum dot embedded in a nanowire

Materials Science 2013-05-29 v1

Authors: Gregory Sallen , Adrien Tribu , Thomas Aichele , Régis André , Lucien Besombes , Catherine Bougerol-Chaillout , Serge Tatarenko , Kuntheak Kheng , Jean-Philippe Poizat

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Abstract

Photoluminescence of a single CdSe quantum dot embedded in a ZnSe nanowire has been investigated. It has been found that the dark exciton has a strong influence on the optical properties. The most visible influence is the strongly reduced excitonic emission compared to the biexcitonic one. Temperature dependent lifetime measurements have allowed us to measure a large splitting of $\Delta E = 6$ meV between the dark and the bright exciton as well as the spin flip rates between these two states.

Keywords

dark exciton quantum dot nanowire photoluminescence spin flip

Cite

@article{arxiv.0903.0497,
  title  = {Dark exciton optical spectroscopy of a semiconducting quantum dot embedded in a nanowire},
  author = {Gregory Sallen and Adrien Tribu and Thomas Aichele and Régis André and Lucien Besombes and Catherine Bougerol-Chaillout and Serge Tatarenko and Kuntheak Kheng and Jean-Philippe Poizat},
  journal= {arXiv preprint arXiv:0903.0497},
  year   = {2013}
}

Dark exciton optical spectroscopy of a semiconducting quantum dot embedded in a nanowire

Abstract

Keywords

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