Mariem Ben Youssef soutiendra sa thèse intitulée :

"Fonctionnalisation de surface des oxydes métalliques par des SAMs dipolaires ; application aux cellules photovoltaïques"

le lundi 24 Septembre 2018 à 14h en salle 774 (bâtiment Lavoisier, Université Paris Diderot).

The insertion of very thin metal-oxide (MO) layers at the interface between the conductive electrodes (FTO/ITO, Metals) and the active layer (polymer, perovskite) presents a promising solution to improve the performances of organic and hybrid photovoltaic devices. The procedure is about introducing MO layers functionalized by dipolar self-assembling monolayer’s (SAMs) at the interface between the conductive electrode and the active layer. The SAM layers bearing dipoles perpendicular to the surface that can have a large impact on the electronic devices both by affecting the growth and organization of active organic layer and by tuning the work function of the MO layers. In this work we show that the grafting of dipole molecular on top of MO thin films can considerably affect the performance of the photovoltaic cell. The impact on these performances depends strongly on the orientation of the permanent dipole lying on the SAM molecule.

Jury de thèse :

Mme. Anne Lafosse Université de Paris Sud (Professeur) Rapporteur
M. Kamel Alimi Université de Monastir (Professeur) Rapporteur
M. Yvan Bonnassieux Ecole Polytechnique (Professeur) Examinateur
M. François Maurel Université Paris Diderot (Professeur) Examinateur
M. Fayçal Kouki Université Tunis El-Manar (Maitre des conférences) Co-directeur
M. Philippe Lang Université Paris Diderot (DR CNRS)
Directeur de thèse