Natalie attended the MRS Spring Meeting 2026 in Honolulu and gave two invited talks about organics photocatalysis and highly doped polymers!

Last Friday, Gopika presented the first results of her PhD at the Swiss Photochemistry Symposium in Fribourg. Very well done Gopika! Anouk and Maxi joined as participants, and we had enriching discussions with the other members of the field based in Switzerland. Thanks a lot to the organizers for this wonderful event!

Tom van der Pol et al., report a new operation regime in BBL, a polymer deswelling driven by water expulsion owed to polymer-cation interactions upon n-type electrochemical doping. Congrats to the team, we are proud to have contributed with terahertz spectroscopy. Now in Nature Materials!

Why do some polymers tolerate high doping levels and keep increasing their conductivity, while others decay at similar doping levels? Our PhD student, Basil, explores this in his first paper as first author, now published in Advanced Materials.

Our PhD student Kaishuai Zhang attended the e-MRS spring 2026 conference where he delivered a talk on the dynamics of electrochromic switching in covalent organic frameworks.

Julien presented at SPIE photonics! He showed his first hyperspectral images of OECTs. The doping and dedoping can be monitored in the channel and on the transparent ITO electrodes at the same time. Time resolved images have also been acquired, giving a unique insight into the doping mechanisms governing the functioning of OECTs.

New PhD in the house! Last Wednesday, Isabelle successfully defended her PhD thesis on the spectroscopic investigation of doping in organic mixed ionic–electronic conductors. You did a fantastic job, and we are super proud of you! All the best for the future ahead of you, you will be missed here!

A warm welcome to Varun Subudhi who is joining as a Ph.D. student within the MSCA doctoral network FADOS. Varun completed his Integrated M.Sc. degree in Physics at NISER, Bhubaneswar, India, where he specialized in nanoelectronics and organic device physics. At FemtoMat, he will focus on charge transport in doped organic semiconductors using THz spectroscopy to bridge local and macroscopic behaviour. All the best for the start!

We are thrilled to announce our new publication by Priscila! She studied why P3HT outperforms more polar analogues in OECTs. Thanks to the groups of Sahika Inal and Christian Nielsen for the great collaboration on this project!

New PhD in the house! Last Friday, Cedric successfully defended his PhD thesis on excitation-energy and field-driven ultrafast charge processes in organic semiconductors! You did a great job, and we wish you all the best for the future!

Last week, Dimitra travelled to the MATSUS Fall Meeting in Valencia! There, she presented our research on mixed conductivity in electrochemically and chemically doped polymers and connected with the community! Thanks a lot Dimitra for the nice presentation!

We are happy to announce our new publication by Eva! She investigated the distance–resilient conductivity in p-doped polythiophenes and compared aliphatic and glycolated sidechains. Many thanks to the groups of Christian Müller and Martijn Kemerink for the collaboration on this project!

We are happy to announce that Gopika Suresh started her PhD with us in September! Gopika obtained her integrated BS–MS degree from IISER Thiruvananthapuram, India and she will join our photocatalysis subgroup, aiming to understand charge carrier dynamics that underpin photocatalytic activity. All the best for the start!

We have a new Bachelor student! Yunjeong joined our group in September after completing her Bachelor’s degree in Chemistry from Sogang University, Korea. She will investigate the dynamics of electrochemical doping with us. We wish you a good start!

Christian presented his spectro-electrochemical studies on the structure–property relationships in organic mixed ionic–electronic conductors (OMIECs). Congratulations for the inspiring talk!

In the beginning of September, our PhD student Alan Ávila presented his First Year Symposium. Congratulations on achieving this milestone! We wish you a lot of success on your academic journey!

We are very happy to announce that we are able to fill a PhD position in the field of spectroscopic characterization of doped organic thin films! To get more information, please refer to the attached PhD. We are looking forward to receiving your applications! PhD position in the field of spectroscopic characterization of doped organic thin films

New PhD in the house! Last Friday, Eva successfully defended her PhD thesis on the conductivity of doped organic semiconductors! Thanks so much for the incredible insights into the charge transport on different length and temperature scales! You did a great job and we are very proud of you!

Check out our new group photo 2025! We were growing over the past months and in the next weeks, we will present our new group members in detail. Stay tuned!

We are happy to announce our new publication by Kaishuai about the differences between copolymerization and physical mixing of glycolated and alkoxylated polymers in their OECT performance. Many thanks to the group of Wouter Maes for the collaboration on this project!