Spectroscopy of a single semiconductor quantum dot at negative and positive discrete charge states

D. V. Regelman; E. Dekel; D. Gershoni; E. Ehrenfreund; W. V. Schoenfeld; P. M. Petroff

doi:10.1002/1521-396X(200204)190:2<491::AID-PSSA491>3.0.CO;2-G

Spectroscopy of a single semiconductor quantum dot at negative and positive discrete charge states

Materials Science 2015-06-24 v1

Authors: D. V. Regelman , E. Dekel , D. Gershoni , E. Ehrenfreund , W. V. Schoenfeld , P. M. Petroff

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Abstract

We study optically single self-assembled quantum dots embedded within the wide quantum well of a mixed type quantum structure. We compare the steady state and pulsed photoluminescence spectra of these dots to those of previously studied "regular" dots. We unambiguously identify experimentally emission from various discrete charge state of the dots. We provide means for optically tune the charge state of the dot, both negatively and positively. Our observations are used to accurately determine the asymmetry between the quantum dots' confined electron and hole envelope wavefunctions.

Keywords

semiconductor quantum dot discrete charge states photoluminescence spectroscopy self-assembled quantum dots envelope wavefunctions

Cite

@article{arxiv.cond-mat/0104142,
  title  = {Spectroscopy of a single semiconductor quantum dot at negative and positive discrete charge states},
  author = {D. V. Regelman and E. Dekel and D. Gershoni and E. Ehrenfreund and W. V. Schoenfeld and P. M. Petroff},
  journal= {arXiv preprint arXiv:cond-mat/0104142},
  year   = {2015}
}

Comments

accepted to Proceedings of the 25-th International Conference on the Physics of Semiconductors (ICPS 25), 17-22 September (2000),Osaka, Japan

Spectroscopy of a single semiconductor quantum dot at negative and positive discrete charge states

Abstract

Keywords

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