| 초록 |
Because organic materials used in displays such as OLEDs are easily decomposed by oxygen and water gas, a lot of gas barrier researcher have studied to overcome this limitation. Atomically perfect chemical strucutre of graphene does not allow any gases to pass through graphene. However, synthesized graphene in large-area contains many defects in reality, resulting in poor gas barrier properties. To solve this problem, we applied self-assembled monolayer of hexatriacontane (SAM-HTC) in two-dimension on graphene. This SAM-HTC formed on graphene can cover the defects in nanometer size and block the pathway of gas molecules. The packing structures of HTC/graphene were investigated at molecular level using scanning tunneling microscope (STM) and the obtained STM images showed that SAM-HTC could physically cover graphene defects in nanometer scale due to van der waals interaction. This atomically thin hybrid structure dramatically enhances gas barrier performance while keeping transparency. |
