Regensburg 2016 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 38: Organic Photovoltaics and Electronics (joint session CPP/HL, organized by HL)

CPP 38.8: Vortrag

Mittwoch, 9. März 2016, 17:15–17:30, H2

Vertical Organic Light Emitting Transistors for Investigation of Charge Transport in VOFETs — •Franz Michael Sawatzki¹, Alrun Günther¹, Duyhai Doan², Christoph Hossbach³, Petr Formánek⁴, Daniel Kaseman^1,5, Johannes Widmer¹, Thomas Koprucki², and Karl Leo^1,6 — ¹Institut für Angewandte Photophysik, Technische Universität Dresden, Germany — ²Weierstraß-Institut für Angewandte Analysis und Stochastik, Leibniz-Institut im Forschungsverbund Berlin e. V., Germany — ³Institut für Halbleiter- und Mikrosystemtechnik, Technische Universität Dresden, Germany — ⁴Leibniz-Institut für Polymerforschung Dresden e.V., Germany — ⁵currently: CreaPhys GmbH, 01257 Dresden, Germany — ⁶Fellow of the Canadian Institute for Advanced Research (CIFAR), Toronto, Ontario M5G 1Z8, Canada

The vertical organic field effect transistor (VOFET) offers many technological advantages due to its very short geometric channel length. However, in contrast to the standard lateral organic field effect transistor (OFET), the basic physics and working principles are not yet well known. Here, we compare results regarding the charge transport obtained from simulations with measured charge carrier density distributions. The latter ones are obtained from the light emission of vertical organic light emitting transistors (VOLETs). These devices are a combination of an organic light emitting diode (OLED) and a VOFET, which allow to locally resolve the current path. We show the dependence of the channel size and geometry on the gate-source voltage, the drain-source voltage, and the source geometry.