Neuromorphics
Here physicists, engineers, and materials scientists collaborate to explore new device paradigms and develop neural networks for artificial intelligence based on organic electrochemical transistors.
Electrochemical transistors for neural networks: Organic electrochemical transistors (OECTs) are considered next-generation bioelectronics thanks to their biocompatibility and ability to operate in electrolytic environments. OECTs have already been used for artificial synapses, biosensors, and as controllable drug delivery systems. In our group, we are taking this a step further. We are growing dendritic networks from OECTs and using them for machine learning. Our goal is to create implantable and biocompatible computing platforms that can analyze and process the composition of bodily fluids in real time. The random arrangement of semiconductor fibers could, in the future, enable artificial intelligence (AI) to perform tasks on-chip using reservoir computing, a machine learning approach. This could represent a potential breakthrough in medicine and healthcare.
A network of organic semiconductor material grown via electropolymerisation. The network resembles the structure of a neurons as shown on the left.
Dünnfilm-Transistor für 4-Punkt-Messungen
Charge carrier transport in organic semiconductors: In classical silicon-based electronics, controlled doping and energy level manipulation are well understood and established in production. To transfer these technologies to organic semiconductors, we investigated molecular doping and band gap modification and explored the physical basis of these effects. Our current focus is on using these findings to design more energy-efficient optoelectronic devices.
Rubrene crystals: We investigate the electronic transport properties of highly crystalline organic semiconductors for use in novel functional devices. Our work focuses on the growth, doping, and processing of thin-film crystals. We utilize technologies that will also be relevant for industrial applications. We are interested in the physics of new device concepts based on these organic thin-film crystals.
We are always looking for motivated students (Bachelor's and Master's), doctoral students, and postdocs. If you are interested, please contact Hans Kleemann.
Contact:
© Kai Schmidt/IAP
Dr. Hans Kleemann
Arbeitsgruppe ODS (Organic Devices and Structures)
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