On Wednesday 14th May, we hosted a visit from Dr. Julien Rébault from University of Bern.
He gave a talk with the title “Spectro-electrochemical Investigation of Organic Mixed Ionic-Electronic Conductors“
Abstract:
Organic semiconductors are used for applications in organic electronics, thermoelectrics and bioelectronics. Still, much remains to be understood about the properties of the conductive charges in order to optimize the design of materials based on organic semiconductors. Electrochemical doping is the fundamental mechanism to increase the conductivity of organic semiconductor films used in organic electrochemical transistors (OECTs). It also represents an ideal playground for fundamental studies. Benefits of investigating doping mechanisms via electrochemistry include controllable doping levels, reversibility and high achievable carrier densities. In this talk, I will show how we can gain insights into the fundamental processes that drive OECTs by using a variety of different optical spectroscopies going from the visible/near-infrared to the terahertz (THz).
About Dr. Julien Réhault:
Julien is a by education a physicist specialized in ultrafast laser spectroscopies. He obtained his PhD in Zurich in the group of Prof. Peter Hamm in 2012 and a did postdoc in Milano in the group of Prof. Giulio Cerullo (2013-2015). He also worked on building the Swiss free electron laser (SwissFEL) at Paul Scherrer Institute (2015-2017). Finally, Julien joined the FemtoMat group of Prof. Natalie Banerji in the University of Bern as a Postdoc in August 2017 and became Research Associate in June 2018. His research interests involve any kind of spectroscopies ranging from the ultraviolet to the Terahertz. He is mainly involved in developing new spectroscopic tools for the field of Organic Bioelectronics.
Zeglio Lab 