Cross-sectional nanophotoluminescence studies of Stark effects in self-assembled quantum dots
- 7 February 2000
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 76 (6) , 700-702
- https://doi.org/10.1063/1.125866
Abstract
By using a cross-sectional geometry, we show the capability to perform single-dot spectroscopy in self-assembledquantum dots using far-field optics. By using this method, we study the quantum-confined Stark effect in self-assembledquantum dots. For single-stack quantum dots(QDs), we find that the spectra are redshifted with an increase in electric field. For vertically coupled double-stack quantum dots, while most of the QDs are redshifted, some QDs show blueshifted spectra, which can be interpreted as an evidence of coupled QD molecules.Keywords
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