Picosecond charge variation of quantum dots under pulsed excitation

Details Picosecond charge variation of quantum dots under pulsed excitation Picosecond charge variation of quantum dots under pulsed excitation

2009-11-17

arxiv.org/abs/0911.3336v1

Phys.Rev.B 81 (2010) 155313

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

10 pages, 11 figures

Scientific paper

10.1103/PhysRevB.81.155313

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.

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