Mr. Jean Roncali, Emeritus Research Director at the University of Angers, currently Associate Professor at University Babes Bolyai, Romania, will give a seminar on Monday, March 28, 2022 at 2:00 pm at XLIM, in the conference room. The talk is entitled "Single Material Organic Solar Cells:  a possible future for organic photovoltaics ?".

Jean Roncali, is one of the French pioneers in the synthesis of small conjugated organic molecules in fields as varied as the functionalization of electrodes, the realization of self-organized nanostructures, molecular electronics and organic electronics.  In this last field these materials are the basis of transistors, OLEDs and organic solar cells.

Seminar Summary:

Although the conversion efficiency of organic solar cells has recorded impressive progress in recent years with values now rivaling those of inorganic solar cells, the industrial development of this technology remains elusive and the topic seems to remain confined to a purely academic interest. After a brief introduction exposing personal views on the possible causes of this situation. The potential advantages of single material organic solar cells (SMOSCs) will be discussed. The state-of-the-art of the different approaches and concepts developed for SMOSCs fabrication including double-cable polymers, block copolymers and molecular dyads will be presented. A particular emphasis will be given to the recently emerging topic of homojunction SMOSCs. Some preliminary results on homojunction cells based on small donor-acceptor molecules will be presented and possible directions for future research will be discussed.