Electron capture and emission dynamics of self-assembled quantum dots far from equilibrium with the environment

被引:4
作者
Schnorr, L. [1 ]
Labes, J. [1 ]
Kuerten, L. [1 ]
Heinzel, T. [1 ]
Rothfuchs-Engels, C. [2 ]
Scholz, S. [2 ]
Ludwig, A. [2 ]
Wieck, A. D. [2 ]
机构
[1] Heinrich Heine Univ Dusseldorf, Solid State Phys Lab, D-40204 Dusseldorf, Germany
[2] Ruhr Univ Bochum, Lehrstuhl Angew Festkorperphys, D-44780 Bochum, Germany
关键词
LEVEL-TRANSIENT SPECTROSCOPY; GAAS; INGAAS; TRAPS;
D O I
10.1103/PhysRevB.104.035303
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The electron transfer dynamics between self-assembled quantum dots and their environment are measured under nonequilibrium conditions by time-dependent capacitance spectroscopy. The quantum dots are embedded in a wide spacer, which inhibits elastic tunneling to or from the reservoirs. At certain bias voltages, electron capture and emission are both significant. A rate equation model is used to determine the corresponding transfer rates and the average occupation numbers of the dots as a function of the bias voltage.
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收藏
页数:7
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