Pentacene has been widely recognized as a promising material for application on organic thin-film transistors (OTFTs) due to its high field effect mobility. 1 It exhibits a strong tendency to form highly ordered films on various substrates under different growth conditions. An optimal mobility in excess of 5 cm 2 V −1 s −1 has been achieved. 2 The effectiveness of the devices depends critically on the crystal morphology of the pentacene films. 3 The pentacene film ...
