Photoluminescence of tetrahedral quantum-dot quantum wells

(2) FSM; (3) TFVS; Belgium); E. P. Pokatilov (2); J. T. Devreese (3) ((1) Nano-Device Laboratory; Universitatea de Stat din Moldova; Universiteit Antwerpen; University of California; USA; V. A. Fonoberov (1)

arxiv: cond-mat/0602053 · v1 · submitted 2006-02-02 · ❄️ cond-mat.mes-hall

Photoluminescence of tetrahedral quantum-dot quantum wells

V. A. Fonoberov (1) , E. P. Pokatilov (2) , V. M. Fomin (3) , J. T. Devreese (3) ((1) Nano-Device Laboratory , University of California , USA , (2) FSM , Universitatea de Stat din Moldova

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(3) TFVS Universiteit Antwerpen Belgium)

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keywords qdqwquantumtetrahedralgroundphotoluminescencestateaccountapproach

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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.

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Photoluminescence of tetrahedral quantum-dot quantum wells

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