About this Abstract |
| Meeting |
2026 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, Roger Claude, Anand Gaur, Yi Liu, Jun Cui |
| On-Site Speaker (Planned) |
Chaochao Pan |
| Abstract Scope |
Copper-graphene composite has demonstrated its potential for higher electrical conductivity than pure copper. Despite the limited improvement reported in the composites, the conductivity dependence on graphene fraction remains qualitative. In the present work, we synthesized 1 µm thick copper-graphene multilayer films on Si substrate by alternative e-beam evaporation and PECVD method. 2-layer, 4-layer, and 6-layer samples were synthesized, and the conductivity increased monotonically with the number of layers. The highest conductivity is achieved for the 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% improvement can be achieved when the graphene spacing is near 39 nm, the electron mean free path of copper. Strategies to overcome the film agglomeration challenge for graphene spacing under 200 nm are discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Composites, Electronic Materials, Other |