Spatially indirect transitions in electric field tunable quantum dot diodes

A.K. Rai, S. Gordon, A. Ludwig, A.D. Wieck, A. Zrenner, D. Reuter, Physica Status Solidi (B) 253 (2015) 437–441.

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Journal Article | Published | English
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Abstract
We analyse an InAs/GaAs-based electric field tunable single quantum dot diode with a thin tunnelling barrier between a buried n þ -back contact and a quantum dot layer. In voltage- dependent photoluminescence measurements, we observe rich signatures from spatially direct and indirect transitions from the wetting layer and from a single quantum dot. By analysing the Stark effect, we show that the indirect transitions result from a recombination between confined holes in the wetting or quantum dot layer with electrons from the edge of the Fermi sea in the back contact. Using a 17 nm tunnel barrier which provides comparably weak tunnel coupling allowed us to observe clear signatures of direct and corresponding indirect lines for a series of neutral and positively charged quantum dot states.
Publishing Year
Journal Title
physica status solidi (b)
Volume
253
Issue
3
Page
437-441
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Rai AK, Gordon S, Ludwig A, Wieck AD, Zrenner A, Reuter D. Spatially indirect transitions in electric field tunable quantum dot diodes. physica status solidi (b). 2015;253(3):437-441. doi:10.1002/pssb.201552591
Rai, A. K., Gordon, S., Ludwig, A., Wieck, A. D., Zrenner, A., & Reuter, D. (2015). Spatially indirect transitions in electric field tunable quantum dot diodes. Physica Status Solidi (B), 253(3), 437–441. https://doi.org/10.1002/pssb.201552591
@article{Rai_Gordon_Ludwig_Wieck_Zrenner_Reuter_2015, title={Spatially indirect transitions in electric field tunable quantum dot diodes}, volume={253}, DOI={10.1002/pssb.201552591}, number={3}, journal={physica status solidi (b)}, publisher={Wiley}, author={Rai, Ashish K. and Gordon, Simon and Ludwig, Arne and Wieck, Andreas D. and Zrenner, Artur and Reuter, Dirk}, year={2015}, pages={437–441} }
Rai, Ashish K., Simon Gordon, Arne Ludwig, Andreas D. Wieck, Artur Zrenner, and Dirk Reuter. “Spatially Indirect Transitions in Electric Field Tunable Quantum Dot Diodes.” Physica Status Solidi (B) 253, no. 3 (2015): 437–41. https://doi.org/10.1002/pssb.201552591.
A. K. Rai, S. Gordon, A. Ludwig, A. D. Wieck, A. Zrenner, and D. Reuter, “Spatially indirect transitions in electric field tunable quantum dot diodes,” physica status solidi (b), vol. 253, no. 3, pp. 437–441, 2015.
Rai, Ashish K., et al. “Spatially Indirect Transitions in Electric Field Tunable Quantum Dot Diodes.” Physica Status Solidi (B), vol. 253, no. 3, Wiley, 2015, pp. 437–41, doi:10.1002/pssb.201552591.

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