Berlin 2018 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 46: Poster Session IV
CPP 46.56: Poster
Mittwoch, 14. März 2018, 11:00–13:00, Poster A
Investigation of opto-electronic properties of ZnPc:F4ZnPc OLEDs — •Simon Wiegand1, Thomas Ferschke1, Gabriel Freiherr von Eyb1, Sebastian Hammer1, and Jens Pflaum1,2 — 1Experimental Physics VI, Julius-Maximilian University of Würzburg, 97074 Würzburg — 2Bavarian Center for Applied Energy Research (ZAE Bayern), 97074 Würzburg
To analyze the electrically driven generation of excitonic and possible charge transfer states we fabricated organic light emitting diodes (OLEDs) comprising an emission layer (EML) made out of co-evaporated neat and partially fluorinated zinc phthalocyanin, ZnPc and F4ZnPc, respectively. By means of electroluminescence (EL), photoluminescence (PL) and I(V) characteristics, we studied the opto-electronic properties of these OLEDs. The additional variation of the EML thickness provides access to the microscopic mechanisms, such as local space charging or an unbalanced injection of electrons and holes, governing the radiative as well as non-radiative relaxation of excited states. Furthermore, guided by a recent publication of our group [1] we intend to utilize plasmonic emission enhancement by using suited electrode materials and electrode geometries matching the spectral characteristics of our ZnPc:F4ZnPc OLEDs.
[1] V. Kolb, et al., Opt Express, 2017, 25(6), 6678–6689