Regensburg 2004 – wissenschaftliches Programm
SYOH 5.75: Poster
Donnerstag, 11. März 2004, 18:00–21:00, B
All Polymer Field-Effect-Transistors based on Low-Cost-Microstructuring — •Klaus Mueller, Ioanna Paloumpa, Carola Schwiertz, Agnes Jahnke und Dieter Schmeisser — BTU Cottbus, Angewandte Physik-Sensorik, 03013 Cottbus
Thin film transistors with P3HT as active layer have been prepared by spin coating. The electrodes for source and drain have been prepared by a low cost plotting method with colloidal graphite or carbon black as the conducting material. PEDOT or carbon black was used as gate electrode. The devices, prepared by different methods and materials have been characterized by electrical measurements, for example, their transfer and output characteristics. Furthermore, the influence of different materials on effects like hysteresis or reproducibility will be compared.
In addition, we describe a project investigating new types of biosensors with functionalized gate electrodes. Exchanges of dipole moments or charges by immobilisation of biomolecules will change the electrical characteristic of the transistor, which leads to a sensing signal proportional to their amount.