Please join the Photonics Initiative for a one-hour talk from Mischa Bonn, Max Planck Institute for Polymer Research, Mainz, Germany, titled:
Ultrafast Terahertz Photoconductivity of New Materials
Abstract – For novel functional electronic materials, we need to characterize the electrical properties of novel materials, in particular electrical transport, defined by electron and hole mobility. Classical approaches such as field-effect transistors and four-point probe measurements of mobility often pose challenges: crystalline regions in the material are typically smaller than the distance between electrodes. Then one needs to distinguish between transport within crystalline regions, and transport between these regions. In my presentation, I will show how noninvasive optical Terahertz spectroscopy methods can provide fundamental insights into new materials and their conductive properties.
Bio – Bonn serves as Max Planck Director and professor by special appointment in Amsterdam (Physics) and Mainz (Chemistry). The overall aim of Bonn’s research is to reveal the structure and dynamics of molecules and intermolecular interactions at interfaces, as well as transport of molecules and charge across those interfaces. This is of fundamental interest, but also highly relevant for environmental processes (e.g. chemical conversion on ice surfaces), biophysics (e.g. water, lipids and proteins at membrane interfaces) and energy conversion (e.g. photovoltaics, photocatalytic water splitting at interfaces and charge carrier dynamics across semiconductor nanostructures). To achieve these goals, Bonn develops and implements state-of-the-art, laser-based spectroscopic tools.
This one-hour seminar will be presented in the ASRC Auditorium and broadcasted via Zoom.
Meeting ID: 834 5578 0079
Passcode: 070776
For more information about this hybrid event, please contact:
Leah Abraha
labraha@gc.cuny.edu