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Light Absorption and Photoluminescence in Quantum Dots and Artificial Molecules

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Firsov D., Vorobjev L., Panevin V., Fedosov N., Shalygin V., Samsonenko J., Tonkikh A., Cirlin G., Andreev A., Kryzhanovskaya N., Tarasov I., Pikhtin N., Ustinov V., Hanna S., Seilmeier A., Julien F., Zakharov N., Werner P.

Acta Physica Polonica A

2005

vol. 107

issue 1

158-162

Intraband absorption in n- and p-doped structures with InAs/GaAs quantum dots covered by InGaAs layers is studied both experimentally and theoretically. The absorption cross-section for p-type quantum dots was found to be significantly smaller than that for n-type quantum dots. Interband absorption bleaching under strong interband excitation is found and investigated in undoped quantum dot structures. Structures with artificial molecules were grown. Photoluminescence spectra and transmission electron microscopy images proves the presence of coupled symmetrical quantum dots.

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1 Acta Physica Polonica A

1 2005

1 Andreev A.

1 Cirlin G.

1 Fedosov N.

1 Firsov D.

1 Hanna S.

1 Julien F.

1 Kryzhanovskaya N.

1 Panevin V.

1 Pikhtin N.

1 Samsonenko J.

1 Seilmeier A.

1 Shalygin V.

1 Tarasov I.

1 Tonkikh A.

1 Ustinov V.

1 Vorobjev L.

1 Werner P.

1 Zakharov N.

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Light Absorption and Photoluminescence in Quantum Dots and Artificial Molecules