Regensburg 2019 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 37: Poster Session III
CPP 37.45: Poster
Mittwoch, 3. April 2019, 11:00–13:00, Poster B1
Investigating the influence of morphology on the charge-carrier mobility in organic field-effect transistors — •Tobias Meier1, Heinz Bässler1,2, and Anna Köhler1,2 — 1Soft matter optoelectronics, University of Bayreuth, 95440 Bayreuth, Germany — 2Bayreuth Institute of Macromolecular Research, University of Bayreuth, 95440 Bayreuth, Germany
For organic semiconductors it is well known that the charge-carrier mobility depends sensitively on the morphology of the organic semiconductor film. The charge-carrier mobility is one of the most important properties for the application of organic semiconductors as it determines the performance of devices such as organic solar cells and field-effect transistors (OFETs). However, computational models to investigate this morphology-mobility relationship are still rare. Here, we have developed a kinetic Monte Carlo model approach to simulate charge transport in OFETs that greatly reduces the computational costs at higher charge-carrier concentrations through an effective energy landscape. This is necessary in order to simulate larger device sizes enabling the introduction of morphological aspects. Our model enables us to study the influence of conjugation length and their alignment in the film in the charge transport process.