Search

Your search keyword '"Carraresi, L"' showing total 5 results
Start Over Author "Carraresi, L" Publisher aip publishing
5 results on '"Carraresi, L"'

5. Thermally activated carrier transfer and luminescence line shape in self‐organized InAs quantum dots

Author

Paola Frigeri, L. Brusaferri, Mario Guzzi, Marcello Colocci, Emanuele Grilli, A. Bignazzi, L. Carraresi, A. Bosacchi, Franco Bogani, Stefano Sanguinetti, S. Franchi, Brusaferri, L, Sanguinetti, S, Grilli, E, Guzzi, M, Bignazzi, A, Bogani, F, Carraresi, L, Colocci, M, Bosacchi, A, Frigeri, P, and Franchi, S

Subjects
Photoluminescence, Quenching (fluorescence), Physics and Astronomy (miscellaneous), Condensed matter physics, Chemistry, Quantum Dot, Condensed Matter::Mesoscopic Systems and Quantum Hall Effect, Molecular physics, Spectral line, Condensed Matter::Materials Science, Electron transfer, Semiconductors, Quantum dot, Electronic Propertie, Emission spectrum, Luminescence, FIS/03 - FISICA DELLA MATERIA, Wetting layer
Abstract

We investigated the temperature dependence (10-180 K) of the photoluminescence (Pi,) emission spectrum of self-organized InAs/GaAs quantum dots grown under different conditions. The temperature dependence of the PL intensity is determined by two thermally activated processes: (i) quenching due to the escape of carriers from the quantum dots and (ii) carrier transfer between dots via wetting layer states. The existence of different dot families is confirmed by the deconvolution of the spectra in gaussian components with full width half maxima of 20-30 meV. The transfer of excitation is responsible for the sigmoidal temperature dependence of the peak energies of undeconvoluted PL bands. (C) 1996 American Institute of Physics.

Published
1996
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results