We present a systematic and quantitative investigation of the quantum confined Stark effect in (Zn, Cd)Se/Zn(S,Se) quantum well structures at room temperature. For this purpose, differential transmission spectroscopy is performed on two samples with different thicknesses of the active layers and 10 nm) and compared to model calculations. We observe a Stark shift of 18 meV in the heavy-hole exciton peak for an electric-field change from 82 to 175 kV/cm for the sample. In contrast, the 10 nm sample shows a rather weak and more Franz–Keldysh-like signal. Furthermore, we have analyzed the spectral behavior of the linewidth enhancement factor Values between 5.1 and 0.2 are found at the energy of absolute maximum of the absorption change for the sample.
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22 June 1998
Research Article|
June 22 1998
Quantum confined Stark effect of II-VI heterostructures suitable as modulators in the blue–green spectral region
P. Michler;
P. Michler
Institut für Festkörperphysik, Universität Bremen, D-28334 Bremen, Germany
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T. Lilienkamp;
T. Lilienkamp
Institut für Festkörperphysik, Universität Bremen, D-28334 Bremen, Germany
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W. Ebeling;
W. Ebeling
Institut für Festkörperphysik, Universität Bremen, D-28334 Bremen, Germany
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J. Gutowski;
J. Gutowski
Institut für Festkörperphysik, Universität Bremen, D-28334 Bremen, Germany
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M. Behringer;
M. Behringer
Institut für Festkörperphysik, Universität Bremen, D-28334 Bremen, Germany
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M. Fehrer;
M. Fehrer
Institut für Festkörperphysik, Universität Bremen, D-28334 Bremen, Germany
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D. Hommel
D. Hommel
Institut für Festkörperphysik, Universität Bremen, D-28334 Bremen, Germany
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Appl. Phys. Lett. 72, 3320–3322 (1998)
Article history
Received:
March 20 1998
Accepted:
April 18 1998
Citation
P. Michler, T. Lilienkamp, W. Ebeling, J. Gutowski, M. Behringer, M. Fehrer, D. Hommel; Quantum confined Stark effect of II-VI heterostructures suitable as modulators in the blue–green spectral region. Appl. Phys. Lett. 22 June 1998; 72 (25): 3320–3322. https://doi.org/10.1063/1.121637
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