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 $1{\mathrm{cm}}^2∕\mathrm{V}\mathrm{s}$ 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.