Berlin 2018 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 46: Poster Session IV
CPP 46.43: Poster
Mittwoch, 14. März 2018, 11:00–13:00, Poster A
Influence of Morphology on Mobility in Perylene Bisimide Polymer Systems — •Hazem Bakr1, Julian Kahle1, Mukundan Thelakkat2, and Anna Köhler1,3 — 1Experimental Physics II, Uni Bayreuth — 2Macromolecular Chemistry I, Uni Bayreuth — 3BIMF, Uni Bayreuth
We investigate how morphological and conformational order affects the charge transport in two different perylene bisimide (PBI) based polymers. The two PBIs used differ in their sidechains, thus leading to different morphologies. Time resolved photoluminescence measurements in solution and film have shown the presence of two emitting species, present at different amounts. A long lived one with a lifetime of 20 ns which is attributed to excimer emission and a short lived one with a lifetime of 4 ns assigned to the PBI monomer emission. Using electron only devices, we determine the electron mobility using space charge limited current (SCLC) measurements. The differences in charge mobilities and their relation to the film morphology are discussed.