Berlin 2015 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 18: Plasmons, plasmonic laser, and spaser

HL 18.5: Vortrag

Montag, 16. März 2015, 16:45–17:00, EW 203

Atomistic Modeling of Excitation Energy Transfer in a Metal Semiconductor Core Shell Nanostructure — •Dirk Ziemann and Volkhard May — Institut für Physik, Newtonstr. 15, Humboldt Universität zu Berlin, D-12489 Berlin, Germany

The interaction of metal nanoparticle plasmons with semiconductor excitons is well studied in literature. As a consequence of this coupling the properties of semiconductor excitons are strongly modified. In this talk special attention is paid to the combination of both systems in close proximity, particularly a core shell system with a metal core and a semiconductor shell. The influence of the metal on the electronic structure of the semiconductor nanostructure is modeled on an atomistic level and the interaction of semiconductor excitons and metal plasmons is discussed. It is shown that exciton quenching due to excitation energy transfer from the semiconductor shell to the metal core is in line with recent experiments (ACS Nano 8(2014),352-361).