| 초록 |
Graphene is attracting tremendous attention on research field of heat dissipation thin film due to its high thermal conductivity. However, due to the 2D structure of graphene, reduced graphene oxide films exhibit low cross-plane thermal conductivity which is an obstacle to effective heat dissipation as opposed to a high in-plane thermal conductivity. To solve its low cross-plane thermal conductivity problem, we devised nano-scaled multilayer heat-dissipation films that alumina nano particles are inserted between horizontally oriented rGO layers. Alumina particles, relatively high thermal conductivity material, can compensate low cross-plane thermal conductivity of rGO. As a result, rGO/Alumina film shows extremely efficient heat dissipation effect by significantly reducing maximum operating temperature of LED. Due to its simple fabrication process and superior thermal properties by layer-by-layer assembly, it is expected that rGO/Alumina film can be applied in heat management. |
