Effect of Ozone on the Stability of Solution-ProcessedAnthradithiophene-Based Organic Field-Effect Transistors.

Wehave investigated the degradation effects of ozone exposureon organic field-effect transistors based on 2,8-difluoro-5,11-bis(triethylsilylethynyl)anthradithiopheneas the organic semiconducting channel layer, as well as on thin filmsof this widely used, high-mobility, small molecule semiconductor.Electrical I–Vmeasurementsshowed a loss of transistor characteristic behavior. We present 1H Nuclear Magnetic Resonance (NMR) spectroscopy results aswell as X-ray Photoemission Spectroscopy (XPS) and Fourier TransformInfrared (FTIR) spectroscopy measurements showing the oxidation ofthe parent molecule, from which we suggest various possible reactionpaths. [ABSTRACT FROM AUTHOR]