Terahertz Torsional Dynamics and Their Influence on Electron-Phonon Coupling in Organic Semiconductors

Terahertz vibrational dynamics are the primary cause of detrimental electron-phonon coupling in organic semi-conducting crystals. This has made these materials prime candidates for study using terahertz vibrational spectroscopy. In this work, we highlight how terahertz torsional dynamics in thiophene-functionalized organic semiconductors play a major role on charge transport properties in these materials. Overall, this work highlights the ability to guide the rational design of new materials using crucial insight from terahertz time-domain spectroscopy studies.