Carrier Diffusion in the Barrier Enabling Formation of Charged Excitons in InAs/GaAs Quantum Dots

• Authors: K. Karlsson , E. Moskalenko , P. Holtz , B. Monemar , W. Schoenfeld , J. Garcia , P. Petroff
• Languages of publication: EN

Abstracts

EN

It is demonstrated that the photoluminescence spectra of single self-assembled quantum dots are very sensitive to the experimental conditions, such as excitation energy and crystal temperature. A qualitative explanation is given in terms of the effective diffusion of the photogenerated carriers, determined by the experimental conditions, which influence the capture probability and hence also the charge state of the quantum dots. This is proposed as a new tool to populate quantum dots with extra electrons in order to study phenomena involving charged excitons.

Keywords

EN

78.67.Hc; 71.35.-y; 78.55.Cr

Discipline

• 78.55.Cr: III-V semiconductors
• 78.67.Hc: Quantum dots
• 71.35.-y: Excitons and related phenomena

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2001
• Volume: 100
• Issue: 3
• Pages: 387-395

Dates

published

2001-09

received

2001-06-01

Contributors

author

K. Karlsson

• Department of Physics and Measurement Technology, Linköping University, 581 83 Linköping, Sweden

author

E. Moskalenko

• Department of Physics and Measurement Technology, Linköping University, 581 83 Linköping, Sweden

author

P. Holtz

• Department of Physics and Measurement Technology, Linköping University, 581 83 Linköping, Sweden

author

B. Monemar

• Department of Physics and Measurement Technology, Linköping University, 581 83 Linköping, Sweden

author

W. Schoenfeld

• Materials Department, University of California - Santa Barbara, Santa Barbara, California 93106, USA

author

J. Garcia

• Materials Department, University of California - Santa Barbara, Santa Barbara, California 93106, USA

author

P. Petroff

• Materials Department, University of California - Santa Barbara, Santa Barbara, California 93106, USA

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Identifiers

DOI

10.12693/APhysPolA.100.387