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Photoluminescence of tetrahedral quantum-dot quantum wells

Fonoberov, V. A. ; Pokatilov, E. P. ; Fomin, V. M. ; Devreese, J. T.

Physica E 26, 63 (2005) [Periódico revisado por pares]

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  • Título:
    Photoluminescence of tetrahedral quantum-dot quantum wells
  • Autor: Fonoberov, V. A. ; Pokatilov, E. P. ; Fomin, V. M. ; Devreese, J. T.
  • Assuntos: Condensed Matter - Mesoscale And Nanoscale Physics
  • É parte de: Physica E 26, 63 (2005)
  • Descrição: 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. Comment: 4 pages, 2 figures

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