Field-effect transistors with good performance using new electron donor-π-acceptor molecules as the active layers

Two new D-π-A molecules 1 and 2 were prepared from the reaction between the Fisher’s base and 7,7,8,8-tetracyano-p-quinodi-methane (TCNQ)/tetracyanoethylene (TCNE). OFETs with the thin-films of 1 and 2 as the active layers (semiconductors) were fabricated. These OFETs show relatively high mobility (up to 10−2 cm2 V−1 s−1) and on/off ratio (up to 105). In particular, these OFETs have rather low threshold voltages.