Ultrafast Spectroscopy as a Tool to Study Organic Semiconductors
Natalie Banerji a
a Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland.
Materials for Sustainable Development Conference (MATSUS)
Proceedings of nanoGe Spring Meeting 2022 (NSM22)
#OrgCD22. Charge Dynamics of State-of-the-art Organic Solar Cells
Online, Spain, 2022 March 7th - 11th
Organizers: Ardalan Armin and Safa Shoaee
Invited Speaker, Natalie Banerji, presentation 206
DOI: https://doi.org/10.29363/nanoge.nsm.2022.206
Publication date: 7th February 2022

We present a variety of ultrafast spectroscopic techniques in the visible and terahertz (THz) range, showing how they can be optimized to study excited states and light-induced processes in organic semiconductors. We discuss case studies, such as the charge dynamics from generation to extraction in highly efficient organic photovoltaic systems containing non-fullerene acceptors, the short-range transport properties evaluated by THz spectroscopy of doped organic thin films, or time-resolved processes in organic electrochemical transistors. We emphasize the depth of understanding that can be gained by exploring such systems from multiple spectroscopic angles, and the relevance to applications such as solar cells or bioelectronics.

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