Dynamics of Charge Leakage From Self-assembled CdTe Quantum Dots

Details Dynamics of Charge Leakage From Self-assembled CdTe Quantum Dots Dynamics of Charge Leakage From Self-assembled CdTe Quantum Dots

2010-03-31

arxiv.org/abs/1003.6040v1

Appl. Phys. Lett. 96, 201905 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, submitted to Applied Physics Letters

Scientific paper

10.1063/1.3430524

We study the leakage dynamics of charge stored in an ensemble of CdTe quantum dots embedded in a field-effect structure. Optically excited electrons are stored and read out by a proper time sequence of bias pulses. We monitor the dynamics of electron loss and find that the rate of the leakage is strongly dependent on time, which we attribute to an optically generated electric field related to the stored charge. A rate equation model quantitatively reproduces the results.

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