| 초록 |
Controlling the charge transfer interaction between conjugated polymer (CP) and reduced graphene oxide (rGO) is crucial, as well as enhancing charge transport of the composites, for improving the performance of the composite-based devices. Here, we report an facile approach to fabricate poly(3-hexylthiophene) (P3HT)/rGO composite films using a photoirradiation of the corresponding composite solutions, resulting in highly improved sensitivity of the P3HT/rGO-based gas sensors. It was found that the rGO synergistically facilitates the molecular ordering of P3HT in combination with photoirradiation of the composite solutions. In addition, the interfacial interactions between rGO and P3HT were enhanced by favorable π-π interactions during photoirradiation of the composite solutions, which was verified by UV-vis spectroscopy and Raman spectroscopy. |
