Cathodoluminescence measurements on cinnabar (a-HgS) published in a previous paper show that the emission peaked a t 1.9 eV obeys a vibronic mechanism. The purpose of the present paper is to complete this characterisation by photoluminescence and excitation measurements (shape of spectrum, kinetics, thermal quenching). These different results allow to calculate the configurational coordinate diagram and to determine its location in the gap. It is also pointed out the influence of the traps and the non-radiative centres revealed by measurements of photoconduction and thermal-stimulated current.Des mesures de cathodoluminescence sur le cinabre (cc-HgS) publi6es dans un article pr6cBdent nous ont montrc5 que 1'Bmission centr6e & 1,9 eV obBissait B un mecanisme vibronique. L'objet du prBsent article est de complBter cette caractBrisation par des expbriences de photoluminescence et d'excitation (forme des spectres, cinbtique, extinction thermique). Ces diffbrents rbsultats nous ont permis de calculer le diagramme de configuration et de le localiser dans la bande interdite. Nous signalons Bgalement l'influence des pibges et des centres non radiatifs mis en dvidence par photoconduction et courant thermostimul6.
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