Regensburg 2007 – scientific programme

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DS: Fachverband Dünne Schichten

DS 7: Organic Film Aging (SYOE 3)

DS 7.2: Talk

Monday, March 26, 2007, 18:15–18:30, H32

Zinc-Tetraphenylporphyrin based field effect transistor — •Daniel Lehmann and Dietrich R.T. Zahn — Chemnitz University of Technology, Semiconductor Physics, D-09107 Chemnitz, Germany

Porphyrin derivatives are interesting molecules for organic electronics because of their low cost and interesting light emitting and absorbing properties. While already being used in organic light emitting diodes, Zinc-Tetraphenylporphyrin (ZnTPP) has never been considered as material usable for organic field effect transistors as well. We present a ZnTPP field effect transistor in top contact configuration. On a 100 nm SiO₂ gate oxide, a 30 nm film of ZnTPP was grown using organic molecular beam deposition. Gold electrodes were grown on top by thermal evaporation through a shadow mask. The organic field effect transistor was electrically characterized in situ. We show the effects of different gases, introduced into the vacuum by a leak valve, on the electrical characteristics.