Charge Transport and Intermolecular Vibrations in Crystalline Semiconducting N-heteropolycycles (C06)

• Subject Area: Physical Chemistry of Solids and Surfaces, Material Characterisation
• Term: since 2017
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 281029004

Charge carrier mobilities in organic semiconductors are limited by transient localization of charges due to intermolecular vibrations at low frequencies. We will apply charge transport measurements and vibrational spectroscopy techniques (THz-spectroscopy, IR-SNOM, Raman spectroscopy) to investigate the impact of low-frequency phonons. Charge transport properties of single crystals and thin films of selected N-heteropolycycles will be determined on long (µm) and short (nm) length scales and correlated with the molecular structure and intermolecular vibrations.

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 1249: N-Heteropolyzyklen als Funktionsmaterialien
• Applicant Institution: Ruprecht-Karls-Universität Heidelberg
• Project Head: Professorin Dr. Jana Zaumseil