Single-crystal field-effect transistors based on copper phthalocyanine

Copper phthalocyanine (Cu-Pc) single crystals were grown by physical vapor transport and field-effect transistors (FETs) on the surface of these crystals were prepared. These FETs function as p-channel accumulation-mode devices. Charge carrier mobilities of up to 1 cm(2)/V s combined with a low field-effect threshold were obtained. These remarkable FET characteristics, along with the highly stable chemical nature of Cu-Pc, make it an attractive candidate for device applications. (C) 2005 American Institute of Physics.