Project B6: Theory of transfer processes and optical spectra of molecule, inorganic semiconductor metal nanoparticle hybrid systems

Theoretical investigation of coupled excited electronic states of hybrid systems:

Systems are formed by supramolecular complexes or layers of conjugated organic molecules (COM), by inorganic semiconductor (ISC) quantum dots or quantum well structures and by metal nanoparticles (MNP) Simulation of photoinduced hybrid exciton formation as well as excitation energy transfer dynamics and related optical spectra Elucidation of plasmon enhancement effects due to differently shaped gold or silver nanostructures placed in close vicinity to a single COM, to supramolecular complexes of them or to an inorganic/organic interface Of main interest are the ISC ZnO, GaN or InN in combination with COMs like perylene or p-sexiphenyl.

ISC surface with a single perylene molecule placed in the vicinity of a sphe- rical MNP. The coupling of the electronic excitations in the semiconductor and in the molecule to the MNP (blue arrows) may strongly affect ISC-COM excitation energy transfer or hybrid exciton formation.