Picosecond charge variation of quantum dots under pulsed excitation

Tomasz Kazimierczuk; Mateusz Goryca; Maciej Koperski; Andrzej Golnik; Jan Gaj; Michał Nawrocki; Piotr Wojnar; Piotr Kossacki

doi:10.1103/PhysRevB.81.155313

Picosecond charge variation of quantum dots under pulsed excitation

Mesoscale and Nanoscale Physics 2010-06-18 v1

Authors: Tomasz Kazimierczuk , Mateusz Goryca , Maciej Koperski , Andrzej Golnik , Jan Gaj , Michał Nawrocki , Piotr Wojnar , Piotr Kossacki

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Abstract

We present a spectroscopic study of excitation dynamics in self assembled CdTe/ZnTe quantum dots. Insight into details of kinetics is obtained from the time resolved micro-photoluminescence, single photon correlation and subpicosecond excitation correlation measurements done on single quantum dots. It is shown that the pulsed excitation in energy above the energy gap of the barrier material results in separate capture of electrons and holes. The capture of carriers of different charge take place at different delay from excitation.

Keywords

quantum dot excitation dynamics charge variation pulsed excitation time-resolved photoluminescence carrier capture

Cite

@article{arxiv.0911.3336,
  title  = {Picosecond charge variation of quantum dots under pulsed excitation},
  author = {Tomasz Kazimierczuk and Mateusz Goryca and Maciej Koperski and Andrzej Golnik and Jan Gaj and Michał Nawrocki and Piotr Wojnar and Piotr Kossacki},
  journal= {arXiv preprint arXiv:0911.3336},
  year   = {2010}
}

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10 pages, 11 figures

Picosecond charge variation of quantum dots under pulsed excitation

Abstract

Keywords

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