| 초록 |
We introduce all-transparent ZnO NWs/graphene hybrids consisting of ZnO NWs vertically grown on reduced graphene film. Highly uniform, nanometer-scale thick, large-area reduced graphene films were prepared on a silicon substrate by spin casting from an aqueous dispersion and subsequent thermal reduction. The large-area reduced graphene film was transferred onto a flexible and transparent PDMS substrate. Hydrothermal synthesis was employed to grow vertical ZnO NWs on the flexible substrate. The resultant ZnO NWs/graphene hybrid architecture maintained its structural integrity, even in a highly deformed state, and ohmic electrical contact through the semiconductor NWs and metallic graphene substrate junctions. As examples among many potential applications, the ZnO NW/graphene hybrids were readily integrated into a field-emitting device, whose remarkable performance under mechanical deformation is reported. |
