高拉伸高迁移率半导体纳米纤维共混薄膜应用于完 全可拉伸有机晶体管

Abstract

Stretchable organic field-effect transistors (OFETs) are fundamental components of organic integrated circuits and wearable biosensors. Stretchable organic semiconductors are core materials to realize high-mobility stretchable OFETs. Achieving polymer semiconductors with both high mobility and high stretchability is an urgent challenge. In this work, high-mobility stretchable semiconducting blend films were prepared by blending a polymer semiconductor with an elastomer. The polymer forms unique nanofibers through the nanoconfinement effect. The as-prepared blend films have low crystallinity and high aggregation degree, resulting in high stretchability and high mobility. Remarkably, the fully stretchable organic transistors exhibit hole maximum mobilities of 2.74 and 2.53 cm2 V−1 s−1 at 0% and 100% strain, respectively. Even at 150% strain, stretchable transistors have a maximum mobility of 1.57 cm2 V−1 s−1. The stretchable transistors show high mechanical robustness during 1000 stretching-releasing cycles at 30% strain.