| abstract |
Organic thin film transistors having improved properties (e.g., on/off ratio>10 5 at 20° C.) are disclosed. The improved transistors comprise an organic active layer of low conductivity (<5×10 -8 S/cm at 20° C., preferably less than 10 -8 or even 10 -9 S/cm). A method of producing such materials is disclosed. Rapid thermal annealing was found to have beneficial results. An exemplary and preferred material is α-hexathienylene (α-6T). The improved transistors are expected to find use for, e.g., active liquid crystal displays and for memories. |