Highly Conductive 3D Nano-Carbon: Stacked Multilayer Graphene System with Interlayer Decoupling

TL;DR

This study explores the electrical conduction and breakdown properties of a 3D stacked multilayer graphene system with interlayer decoupling, demonstrating enhanced current capacity and improved electrical performance.

Contribution

It introduces a novel 3D nano-carbon structure with interlayer decoupling, achieved through stacking CVD-grown graphene layers, and analyzes its electrical and breakdown behavior.

Findings

Enhanced current-carrying capacity compared to monolayer graphene

Interlayer decoupling improves electrical conduction

Doping reduces contact resistance and shifts Dirac point

Abstract

We investigate electrical conduction and breakdown behavior of 3D nano-carbon-stacked multilayer graphene (s-MLG) system with complete interlayer decoupling. The s-MLG is prepared by transferring and stacking large-area CVD-grown graphene monolayers, followed by wire patterning and plasma etching. Raman spectroscopy was used to confirm the layer number. The D-band peak indicates low defect level in the samples. Electrical current stressing induced doping is performed to shift the charge-neutrality Dirac point and decrease the graphene/metal contact resistance, improving the overall electrical conduction. Breakdown experiments show the current-carrying capacity of s-MLG is largely enhanced as compared with that of monolayer graphene.