Dresden 2006 – scientific programme

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CPP: Chemische Physik und Polymerphysik

CPP 21: SYMPOSIUM Functional Organic Thin Films II

CPP 21.5: Talk

Thursday, March 30, 2006, 15:15–15:30, ZEU Lich

Light responsive ambipolar organic field-effect transistor based on amorphous thin films — •Tobat P. I Saragi, Irina Suske, Kristian Onken, Thomas Fuhrmann-Lieker, and Josef Salbeck — Macromolecular Chemistry and Molecular Materials, Department of Science and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinrich-Plett-Strasse 40, D 34109 Kassel, Germany.

In this contribution we demonstrate an ambipolar behavior of new spiro-linked compound. We used a field-effect transistor method to show the ambipolar behavior. Both p- and n-type transistor characters can be observed in our experiment. Surprisingly, both transistor characteristics are significantly enhanced as light used as additional control parameter. This effect makes the material is interesting for photosensor or other promising application. The change of drain current vs. drain voltage and drain current vs. gate voltage curves under illumination are presented and discussed as well. Moreover, the optical, thermal, surface morphology and electrochemical properties are presented and discussed as well.