Charge transfer engineering and dynamics in multidimensional systems for the tuning of their nonlinear optical properties (B05)

• Subject Area: Experimental Condensed Matter Physics ; Optics, Quantum Optics and Physics of Atoms, Molecules and Plasmas
• Term: since 2020
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 398816777

This project aims at manipulating the nonlinear optical response of hybrid nanoscale systems with mixed dimensionality, by controlling charge- and energy-transfer processes. These hybrid systems are composed of 0D (chromophores), 1D (semiconducting nanowires, NWs) and 2D materials. With this, electrical and all-optical tuning of the lasing properties of semiconducting NWs and of 0D-1D-2D hybrid nanoscale structures will be specifically designed. Chemical functionalization with dyes designed to act as electron acceptors or donors and with tunable bandgap (HOMO – LUMO) will modulate the steady-state and the photo-induced electron density (doping) in semiconducting NWs. The aim will be to achieve all-optical active (via charge transfer) and passive (via saturable absorption) tuning of the lasing properties of semiconducting NWs.

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 1375: Nonlinear Optics down to Atomic scales (NOA)
• Applicant Institution: Friedrich-Schiller-Universität Jena
• Project Heads: Professorin Kalina Peneva, Ph.D., since 7/2023; Professor Dr. Carsten Ronning, since 7/2023; Professor Dr. Giancarlo Soavi