Issue 45, 2023

Liquid Cu–Zn catalyzed growth of graphene single-crystals

Abstract

The chemical vapor deposition (CVD) method has been widely used for growing large-scale graphene films on a metal substrate. Due to the drawbacks of single metal substrates, alloy substrates have gradually attracted attention owing to the exceptional characteristics derived from different metals, making them an enticing choice. In this study, a novel liquid Cu–Zn alloy catalyst was introduced for the first time for the preparation of millimeter-sized, single-crystal monolayer graphene using the CVD approach. Notably, the graphene synthesized on the liquid Cu–Zn alloy catalyst exhibited distinct advantages in terms of its larger size and lower nucleation density compared to graphene grown on the conventional liquid Cu catalyst. The uniformity of large-sized graphene's electrical properties was confirmed by 2D resistivity measurements and tests on field effect transistor (FET) devices. This work was put forward to inspire the novel design of alloy catalysts and the synthesis of graphene films bearing desirable properties.

Graphical abstract: Liquid Cu–Zn catalyzed growth of graphene single-crystals

Supplementary files

Article information

Article type
Communication
Submitted
18 Jul 2023
Accepted
07 Oct 2023
First published
25 Oct 2023

New J. Chem., 2023,47, 20703-20707

Liquid Cu–Zn catalyzed growth of graphene single-crystals

L. Li, M. Li, R. Zhang, Q. Zhang, H. Li and D. Geng, New J. Chem., 2023, 47, 20703 DOI: 10.1039/D3NJ03345G

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