| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
2D Materials – Preparation, Properties, Modeling & Applications
|
| Presentation Title |
Enhancement of Electrical Conductivity in Copper-Graphene Multilayer System |
| Author(s) |
Chaochao Pan, Anand P. S. Gaur, Jun Cui |
| On-Site Speaker (Planned) |
Chaochao Pan |
| Abstract Scope |
Copper-graphene composite has demonstrated its potential to achieve high electrical conductivity over the pure annealed copper. Despite the limited improvement reported in the composites with layered structure, the conductivity dependence on graphene fraction remains qualitative. In the present work, we synthesized 1 µm thick copper-graphene multilayer film on Si substrate by alternative e-beam evaporation and PECVD method. 2-layer, 4-layer and 6-layer samples were synthesized and the conductivity increases monotonically with the increase of number of layers. The highest conductivity is achieved for 6-layer sample with 108% IACS and 21% relative improvement. A phenomenological model that considers graphene’s doping effect and interface scattering was proposed to describe the conductivity dependence on graphene spacing. It is predicted that around 60% improved can be achieved when the graphene spacing is near 39 nm, the electron mean free path of copper. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Thin Films and Interfaces, |