| 초록 |
Despite the rapid progress of electrical performances of organic electronic devices, there has been considerable interest in environmental stability of the devices because their properties are significantly degraded over time by water and oxygen species. Accordingly, the introduction of a passivation layer is necessary to protect the devices from the detrimental effects. Here, we report the water vapor transmission rates of graphene films and investigate their gas barrier properties on the organic field-effect transistors. The graphene-passivated devices exhibited excellent environmental stability as well as a prolonged lifetime even after 500 bending cycles. Also, we report the fabrication of solution-processed graphene and TiO2 (rGO/TiO2) composite films via an eco-friendly and low temperature process and demonstrate their enhanced gas barrier properties. We expect that our results would be a good reference showing the graphene-based films’ potential as gas barriers for organic electronics. |
