2014 Nous avons effectué des expériences de spectroscopie à haute résolution sur la luminescence à 0,84 eV émise par GaAs : Cr. Nous obtenons un nouveau schéma des niveaux d'énergie. Ce schéma ainsi que les forces d'oscillateur sont bien interprétés en considérant l'émission par l'ion Cr2+ en site Ga soumis à une perturbation de symétrie C3V. Abstract. 2014 We have performed high resolution luminescence spectroscopy of a chromium related no-phonon multiplet. We deduce a new level scheme. This scheme and the oscillator strengths are conveniently interpreted as arising from transitions at substitutional Cr2+ ions on a Ga-site subjected to a perturbation of C3V symmetry.
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