Regensburg 2007 – wissenschaftliches Programm
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SYOE: Symposium Organic Thin Film Electronics: From Molecular Contacts to Devices
SYOE 8: Poster Session SYOE
SYOE 8.27: Poster
Dienstag, 27. März 2007, 18:00–20:00, Poster B
structural and electrical properties of poly(3-octylthiophene) films: a scanning probe microscopy study — jose abad1, beatriz perez-garcia1, elisa palacios-lidon1, antonio urbina2, and •jaime colchero1 — 1cioyn, departamento de fisica, universidad de murcia, murcia, spain — 2departamento de electronica, universidad politecnica de cartagena, cartagena, spain
Poly-(3-octylthiophene) (P3OT) is one of the most promising materials for applications in organic solar cells. In the present work we find that P3OT thin films (50-500nm) present a very rich nanostructure which is studied by scanning force microscopy techniques. From a morphological point of view, self- assembled lamellar structures are formed on the surface of the films, theirs morphologies are very rich depending on the polymer films growth conditions (drop casting or spin coating).
Kelvin force microscopy (KFM) is applied to study the electrical properties of the films under different working conditions, in particular under light illumination and while an electrical current is passing through the thin film. We find that, on the lamellar structures, different surface potential domains are visualized by KFM.