Preparation of Pentacene Organic Field Effect Transistors by a Wet Process and their Carrier Mobilities

Dewetting-induced crystallization from hot trichlorobenzene solutions led to the formation of aligned pentacene microfibers or plates, depending on preparation conditions. Fibers with a length of several hundred micrometer and a width of less than one micrometer can be prepared. Bottom-contact field effect transistors with fibers that were oriented perpendicular to the source and drain electrodes showed carrier mobilities as high as 0.04 cm2/Vs. In comparison, plate-like pentacene gave corrected mobilities of up to 0.2 cm2/Vs. [DOI: 10.1380/ejssnt.2009.568]