(Tetrathlafulvalene)(tetracyanoquinodimethane) as a contact material for n-channel and ambipolar organic transistors

A metallic organic charge-transfer salt, (tetrathiafulvalene) (tetracyanoquinodimethane) [(TTF)(TCNQ)], is used as a source and drain contact material in n-channel organic transistors based on hexadecafluorophthalocyaninato copper (F(16)CUPc), and low contact resistance and good performance comparable to the Au-contact devices are observed. Ambipolar transistors are fabricated on the basis of a heterostructure of F(16)CuPc and copper phthalocyanine (CuPc). (c) 2008 The Japan Society of Applied Physics.