Regensburg 2019 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 57: Organic Electronics and Photovoltaics IV - Excitonic Properties and Light-Emitting Devices
CPP 57.7: Vortrag
Donnerstag, 4. April 2019, 16:45–17:00, H18
Spectroscopic study of a novel iron based charge-transfer complex — •Nils W. Rosemann1, Kasper Skov Kjaer1, Nidhi Kaaul2, Om Prakash3, Pavel Chábera1, Alireza Honarfar1, Olga Gordivska3, Lisa A. Fredin4, Karl-Erik Bergquist3, Lennart Häggström5, Tore Ericsson5, Linnea Lindh1, Arkady Yartsev1, Stenbjörn Styring2, Ping Huang2, Jens Uhlig1, Jesper Bendix6, Daniel Strand3, Villy Sundström1, Petter Persson4, Reiner Lomoth2, and Kenneth Wärnmark3 — 1Division of Chemical Physics, Department of Chemistry, Lund University, Sweden — 2Department of Chemistry - Ångström Laboratory, Uppsala University, Sweden — 3Center for Analysis and Synthesis, Department of Chemistry, Lund University, Sweden — 4Division of Theoretical Chemistry, Department of Chemistry, Lund University, Sweden — 5Department of Physics and Astronomy - Ångström Laboratory, Uppsala University, Sweden — 6Department of Chemistry, University of Copenhagen, Denmark
Complex molecules based on transition metals are used in solar light harvesting, e.g., dye-sensitized solar cells and photocatalysis. Standard complexes are based on scarce metals like ruthenium. This calls for replacements based on abundant metals like, e.g., Iron (Fe). Here, we present our latest results on a Fe-based complex. By coordination of two tris-carbene ligands to the Fe centre in an octahedral geometry the deactivation through metal centred states is drastically suppressed. Thus, unmatched 2 ns room temperature excited state lifetime and 2% photoluminescence quantum yield are achieved.