Nanoscale optical imaging and spectroscopy of mol2Dmat heterostructures (B02)

• Subject Area: Experimental Condensed Matter Physics
• Term: since 2025
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 555467911

B02 studies processes related to charge transfer using tip-enhanced Raman and photoluminescence spectroscopies with high spatial resolution (25 nm). B02 investigates how local effects such as strain, defects, and inhomogeneity affect charge transfer and charge-transfer excitons in mol2Dmat heterostructures. The project aims to distinguish excitons localized by defects from mobile charge-transfer excitons and study local effects in intercalation. B02 will map the spatial diffusion of charge-transfer excitons through tip-enhanced photoluminescence spectroscopy.

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 1772: Heterostructures of Molecules and 2D- Materials
• Applicant Institution: Freie Universität Berlin
• Project Head: Dr. Sebastian Heeg