| 초록 |
Semiconducting polymer field-effect transistors (FETs) are being intensively developed for next-generation flexible electronics. Blends comprising a small amount of semiconducting polymer mixed into a deformable insulating polymer matrix can yield superior stretchability and environmental stability in FETs, while their electrical properties tend to be degraded, in comparison to the neat semiconductor. Here we demonstrate that ultrasound-assisted polymer blends including two conjugated polymers with the same backbone segment but distinct regioregularity, such as regioregular and regiorandom poly(3-hexyl thiophene). The resulting polymer blend films perform highly-conjugated semiconducting fibrils embedded into the poorly-conjugated polymer matrix, yielding excellent charge-carrier transport and stretchability in deformed OFETs. In addition, a moderate doping of the blends leads to high mobility and on/off current ratio. |
