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Proceedings Paper

Optical memory concepts with self-organized quantum dots- material systems and energy-selective charging
Author(s): C. Kapteyn; J. Ehehalt; R. Heitz; Dieter Bimberg; G. E. Cirlin; Victor M. Ustinov; N. N. Ledentsov
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Paper Abstract

For memory structures based on optically induced charge in self-organized quantum dots, the concept of wavelength-domain multiplexing in the quantum dot ensemble is an essential prerequisite. The electric properties of quantum dots in various material systems as studied by time-resolved capacitance spectroscopy are summarized, and candidates suitable for future memory applications are discussed. By combining optical excitation and capacitance spectroscopy, direct evidence is obtained for energy-selective hole charge generation and storage in InAs/GaAs quantum dots. A clear dependence of the activation energy of the emitted holes on the energy of the excitation is observed.

Paper Details

Date Published: 11 June 2003
PDF: 4 pages
Proc. SPIE 5023, 10th International Symposium on Nanostructures: Physics and Technology, (11 June 2003); doi: 10.1117/12.513858
Show Author Affiliations
C. Kapteyn, Technische Univ. Berlin (Germany)
J. Ehehalt, Technische Univ. Berlin (Germany)
R. Heitz, Technische Univ. Berlin (Germany)
Dieter Bimberg, Technische Univ. Berlin (Germany)
G. E. Cirlin, A.F. Ioffe Physico-Technical Institute (Russia)
Victor M. Ustinov, A.F. Ioffe Physico-Technical Institute (Russia)
N. N. Ledentsov, Technische Univ. Berlin and A.F. Ioffe Physico-Technical Institute (Russia)

Published in SPIE Proceedings Vol. 5023:
10th International Symposium on Nanostructures: Physics and Technology
Zhores I. Alferov; Leo Esaki, Editor(s)

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