I am Marcos Luginieski, and from July 10th to August 11th I had the great opportunity to work alongside Prof. Dr.-Ing. Bj?rn Lüssem at the Institute for Microsensors, -Actuators and -Systems (IMSAS) at the University of Bremen. During this period, we expanded an ongoing research project on complementary inverters based on Organic Electrochemical Transistors (OECTs).

OECT-based complementary inverters are of particular interest due to their unique response to ionic environments, making them strong candidates for interfacing with and mimicking biological systems. For this reason, they have mainly been employed as ionic sensors and as amplifiers in neuromorphic circuits, where the key goals are high sensitivity, large voltage gain, fast switching speed, and longterm stability. In this project, we expanded an ongoing study focused on achieving long-term stability and fast switching speeds while maintaining good voltage gain in these inverters.

My stay at IMSAS and the University of Bremen allowed me to expand my knowledge and gain valuable experience with the vertical architecture of OECTs. This opportunity was fundamental for both my professional development and my personal growth, as I was able to immerse myself in the stimulating and supportive environment of IMSAS and Uni-Bremen. I would like to extend my sincere gratitude to Prof. Dr.-Ing. Bj?rn Lüssem and everyone at IMSAS.

I am also deeply grateful to MAPEX for the financial support that made my stay possible. In particular, I would like to thank Dr. Hanna Lührs and Ms. Britta Hinz for their kind support throughout this period.