| 초록 |
The development of flexible semiconducting polymers is challenging as it is very difficult to enhance their flexibility without negatively affecting their electrical properties. Here, we demonstrate a method to simultaneously enhance the charge carrier mobility and the flexibility via lowering the crystallinity and increasing the propensity for π–π stacking of the polymer chains, which causes π–π stacking-induced polymer networks to form within the semiconducting polymer matrix. The polymer networks efficiently dissipate energy and prevent irreversible microstructural deformation due to the applied strain; furthermore, charges are readily transported via π–π stacked chains. As a result, we were able to improve the polymer’s flexibility along with charge carrier mobility. Additionally, our polymer showed tolerance to a 40% strain without a decrease in mobility while maintaining a stable electrical performance even after 5,000 stretching cycles at 30% strain. |
