Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2006-02-02
Physica E 26, 63 (2005)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
4 pages, 2 figures
Scientific paper
10.1016/j.physe.2004.08.024
Taking into account the tetrahedral shape of a quantum dot quantum well (QDQW) when describing excitonic states, phonon modes and the exciton-phonon interaction in the structure, we obtain within a non-adiabatic approach a quantitative interpretation of the photoluminescence (PL) spectrum of a single CdS/HgS/CdS QDQW. We find that the exciton ground state in a tetrahedral QDQW is bright, in contrast to the dark ground state for a spherical QDQW.
Devreese J. T.
Fomin V. M.
Fonoberov Vladimir A.
Pokatilov Evghenii P.
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