In this seminar I will show the results of photoluminescence spectroscopy on self-assembled GaAs/AlGaAs quantum dots (QDs) grown by droplet epitaxy. The main topics I will touch regard the excitonic recombination in single QDs and are :
i) magneto optical measurements for the investigation of the fine structure of excitons, the Landè g factor and the diamagnetic shift g2 [1,2]
ii) experimental and theoretical study of the binding energy of different excitonic complexe.
 M. Abbarchi et al., Phys. Rev. B 78, 125321 (2008)
 M. Abbarchi et al., Phys. Rev. B 81, 035334 (2010)
 M. Abbarchi et al., in progress