Advanced Materials, Vol.20, No.6, 1146-1146, 2008
Inducement of Azimuthal molecular orientation of pentacene by imprinted periodic groove patterns for organic thin-film transistors
A new strategy for control of the in-plane orientation of pentacene is introduced using nanometer-scale periodic groove patterns as an alignment layer. Compared to pentacene films that are not aligned an enhanced field effect mobility of 1.67 cm2 V-1 s-1 has been achieved when the optimal pi-orbital overlap direction is parallel to the direction of the current flow.