Le Pr. Raphaël Clerc, de l’Université Jean Monnet de Saint Etienne / Institut d’Optique Graduate School, donnera un séminaire le Vendredi 29 Janvier 2016 à 11h dans la salle de Conférences d’XLIM. Son séminaire s’intitule « Operation and modeling of organic solar cells and photodiodes : optical index extractions, blend morphology and oxygen contamination ».

Note pour les doctorants : pensez à vous inscrire sur la liste d’appel lors du séminaire afin de faire valider votre participation auprès de l’école doctorale ED521 !

Abstract. Organic PhotoVoltaic cells (OPV) is a promising technology, for large area, low weight and flexible modules, featuring a short energy payback times and low environmental impact during manufacturing and operations. This technology has also inspired the development of large area organic imagers (Organic PhotoDiodes (OPD)), addressing a large range of application in the field of imaging, such as night vision or medical imaging for instance. This talk will discuss several aspects impacting the operation of such devices.

First of all, the issue of the optical index measurement of organic thin layers will be discussed. An original optical index procedure extraction (using commonly used R, T, T’ measurements) will presented and applied on several low bandgap materials. In the next, the impact of deep traps in the operation of OPV and OPD devices will be investigated. First of all, the correlation of deep traps and blend morphology in P3HT / PCBM organic solar cells will be discussed by the mean of experiments and simulations, allowing to reproduce both illuminated and dark currents versus temperature annealing (using the same set of fitting parameters). Then, the impact of oxygen contamination on low bandgap polymers will be investigated, thanks to a simple and original technics on semi-transparent devices. Again, simulations will be used to analyze electrical measurements.

Raphael Clerc (40 years old) is professor at University Jean Monnet de Saint Etienne and Institut d’Optique Graduate School. He received a M. S. degree in Physics and Engineering from the Physics department of Grenoble Institute of Technology (INPG) in Grenoble in 1998, and a Ph. D. degree in electrical engineering from the same university in 2001. His current field of research includes the modeling and characterization of semiconductor devices in silicon and organic technologies.

Venez nombreux !

Contact du séminaire : Bernard Ratier (bernard.ratier@unilim.fr) / seminaires@xlim.fr