We present a detailed study of the temperature dependence of the single quantum dot emission lineshape in strain free, GaAs/AlGaAs quantum dots. In particular, we analyze the emission lineshape in terms of linewidth, peak energy and sidebands. These quantities are all connected with the nature of the electron-phonon interaction. We conclude that the line broadening in quantum dots is due to pure dephasing processes driven by GaAs-LO phonons. In addition, there is a lack of quantum size effect on the excitonic energy renormalization with the temperature. (c) 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Poliani, E., Bonfanti, M., Sanguinetti, S., Grilli, E., Guzzi, M., Gurioli, M., et al. (2006). Emission lineshape in strain free quantum dot. PHYSICA STATUS SOLIDI. C, CURRENT TOPICS IN SOLID STATE PHYSICS, 3(11), 3819-3822 [10.1002/pssc.200671542].

Emission lineshape in strain free quantum dot

SANGUINETTI, STEFANO;GRILLI, EMANUELE ENRICO;GUZZI, MARIO;
2006

Abstract

We present a detailed study of the temperature dependence of the single quantum dot emission lineshape in strain free, GaAs/AlGaAs quantum dots. In particular, we analyze the emission lineshape in terms of linewidth, peak energy and sidebands. These quantities are all connected with the nature of the electron-phonon interaction. We conclude that the line broadening in quantum dots is due to pure dephasing processes driven by GaAs-LO phonons. In addition, there is a lack of quantum size effect on the excitonic energy renormalization with the temperature. (c) 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Articolo in rivista - Articolo scientifico
quantum dots, photoluminescence
English
2006
3
11
3819
3822
none
Poliani, E., Bonfanti, M., Sanguinetti, S., Grilli, E., Guzzi, M., Gurioli, M., et al. (2006). Emission lineshape in strain free quantum dot. PHYSICA STATUS SOLIDI. C, CURRENT TOPICS IN SOLID STATE PHYSICS, 3(11), 3819-3822 [10.1002/pssc.200671542].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/1686
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