Olivier Bardagot

The research objective of my team is to control the macroscale and nanoscale morphologies of organic semiconducting polymer thin films to develop functional, cost-efficient, portable, and environmentally friendly organic electronic devices. The group aims to optimize organic electrochemical transistors (OECTs) in views of providing a new generation of biosensors for neuropathology detection (UN goal 3) and bacterial detection for identifying water drinkability (UN goal 6). To achieve these goals, the group elaborates new highly-structured polymer films and understanding the fundamental mechanisms driving their chemical and electrochemical doping. We are combining a wide range of microscopy techniques, with in-operando advanced spectroscopic and electrical characterization techniques to rationally guide molecular and device engineering.  To carry out this highly interdisciplinary research, the group is collaborating with internationally-renowned (i) chemists, to provide start-of-the-art performing polymers tailored to answer our research questions, (ii) physico-chemists, to access top-notch characterization instruments to clarify specific questions with pinpoint accuracy, and (iii) biologists, to valorize our findings and move up the Technology Readiness Level scale by developing functional biosensors.

1. Balancing Electroactive Backbone and Oligo(Ethylene Oxy) Side-Chain Content Improves Stability and Performance of Soluble PEDOT Copolymers in Organic Electrochemical Transistors, O. Bardagot*, B. T. DiTullio, A. L. Jones, J. Speregen, J. R. Reynolds, N. Banerji, Advanced Functional Materials 2024, 2412554
2. Ultra-High µC* beyond 10 000 F Cm^-1 V^-1 s^-1 in Organic Electrochemical Transistors, O. Bardagot*, P. Durand, S. Guchait, G. Rebetez, P. Cavassin, J. Réhault, M. Brinkmann, N. Leclerc, N. Banerji*, https://www.researchsquare.com/article/rs-3221543/v1 (Preprint - Under Review for publication in Nature Materials)
3. Effect of a benzothiadiazole spacer on transport properties and N-doping of naphthalene-diimide-based copolymers, O. Bardagot*, Y. Kervella, A. A. Medjahed, S. Pouget, T. N. Domschke, A. Carella, C. Aumaître, P. Lévêque, R. Demadrille*, Journal of Material Chemistry C 2023, 11, 14108–14118
4. Revisiting doping mechanisms of n-type organic materials with N-DMBI for thermoelectric applications: Photo-activation, thermal activation, and air stability, O. Bardagot*, C. Aumaître, A. Monmagnon, J. Pécaut, P.-A. Bayle, R. Demadrille*, Applied Physics Letters 2021, 118, 203904
5. Impact of Morphology on Charge Carrier Transport and Thermoelectric Properties of N-Type FBDOPV-Based Polymers, O. Bardagot, P. Kubik, T. Marszalek, P. Veyre, A. A. Medjahed, M. Sandroni, B. Grévin, S. Pouget, T. N. Domschke, A. Carella, S. Gambarelli, W. Pisula, R. Demadrille, Advanced Functional Materials 2020, 30, 2000449

• Since 2023: Researcher CNRS Strasbourg, France
• 2020 - 2023: Postdoc, University of Bern, Switzerland
• 2016 - 2019: PhD in polymer sciences, CEA Grenoble, France
• 2015 - 2016: M2 international, physics, Imperial College London, United Kingdom
• 2014 - 2016: M2 physics and nanoscience engineering, Phelma - Grenoble INP, France

• Design and processing of organic semiconductor polymers
• Chemical and electrochemical doping
• Organic electrochemical transistor (OECT)
• Time-resolved in-operando spectroscopy
• LabVIEW programming and Python analysis