Issue 28, 2016

A study of the growth-time effect on graphene layer number based on a Cu–Ni bilayer catalyst system

Abstract

The evolution of graphene-based electronic, optoelectronic, and sensing devices has grown at a fast pace in the recent decade, due to the rapid development of manufacturing technology for high-quality graphene. However, the absence of controllability of graphene thickness sets an additional barrier for device applications. Here, we demonstrate that the number of graphene layers can be well controlled by adjusting the Cu–Ni catalyst composition and the reaction time. The Cu–Ni bilayer catalysts are prepared by sputtering Ni and then Cu films on a SiO2/Si substrate with various film thicknesses. With the increase of the growth time, single-layer graphene would be formed on the Cu-rich catalysts, whereas bilayer to few-layer graphene can be obtained on the Ni-rich films. In addition, the formation of single-layer to bilayer graphene as a function of time is attributed to the synergic effect of Cu and Ni catalysts with 1 : 1 composition. The precise control of graphene layer number enables the further development of advanced electronics and sensors.

Graphical abstract: A study of the growth-time effect on graphene layer number based on a Cu–Ni bilayer catalyst system

Supplementary files

Article information

Article type
Communication
Submitted
18 Dec 2015
Accepted
18 Feb 2016
First published
22 Feb 2016

RSC Adv., 2016,6, 23956-23960

Author version available

A study of the growth-time effect on graphene layer number based on a Cu–Ni bilayer catalyst system

T. Wu, Z. Liu, G. Chen, D. Dai, H. Sun, W. Dai, N. Jiang, Y. H. Jiang and C. Lin, RSC Adv., 2016, 6, 23956 DOI: 10.1039/C5RA27075H

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements