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Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2010

Excitons bound to Te isoelectronic dyads in ZnSe

S. Marcet
  • Fonction : Auteur
Régis André
S. Francoeur
  • Fonction : Auteur

Résumé

We report on the excitonic photoluminescence from individual Te dyads in ZnSe. Based on the emission characteristics of these pairs of pseudodonor impurities, we identify dyads of C(2v) symmetry and determine their orientation with respect to the host lattice. The diamagnetic shift of the exciton indicates that the hole bound to the dyad is extremely localized. Measurements of large number of individual dyads reveal that (1) light-hole transitions located at higher energy are strongly suppressed, (2) the line shape of the observed phonon replica allows probing the phonon density of states, (3) dyads of various interatomic separations are observed, (4) the emission energy is extremely sensitive to the local environment of the dyad, and (5) dynamic variations in this local environment results in the intensity fluctuations and spectral diffusion.
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Dates et versions

hal-01017254 , version 1 (02-07-2014)

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S. Marcet, Régis André, S. Francoeur. Excitons bound to Te isoelectronic dyads in ZnSe. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2010, 82 (23), pp.235309. ⟨10.1103/PhysRevB.82.235309⟩. ⟨hal-01017254⟩

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