Synergistic Effects of Doping and Thermal Treatment on Organic Semiconducting Nanowires
2015-09-02T00:00:00Z (GMT) by
Doping of small molecular donors or acceptors on conjugated organic materials can be used to improve the performance of organic electronics. Here we demonstrate highly aligned poly(3-hexylthiophene) (P3HT) nanowires (NWs) doped with 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4-TCNQ) using electrohydrodynamic organic NW printing. The transistor based on <i>p</i>-doped NWs had an order of magnitude higher mobility than did the undoped NW device. This significant improvement resulted from the synergistic effects of <i>p</i>-type doping and thermal annealing on F4-TCNQ-doped P3HT NWs, which induce microstructure changes in P3HT chains.