Issue 35, 2023

Towards bubble-free, centimeter-sized bilayer graphene enabled by backside lamination

Abstract

Van der Waals (vdW) homo-/heterostructures stacked by atomically thin two-dimensional materials have received much attention due to their unique physical properties and outstanding device performance. However, the bubbles at the interface of vdW homo-/heterostructures commonly exert undesirable effects that would deteriorate material quality and thus limit the size and design of the device. Herein, we propose a novel backside lamination method, by which bubble-free, centimeter-sized bilayer chemical-vapor-deposited (CVD) graphene films can be well fabricated. The key factor in our method is that the backsides, adjacent to the metal growth substrate, of two graphene layers can be directly dry-laminated by designing asymmetric transfer media. The as-transferred bubble-free bilayer graphene exhibits exceptional film characteristics, including an ultra-flat surface, clear moiré patterns, uniform interlayer coupling, and negligible strain fluctuation. Additionally, twisted bilayer graphene exhibiting uniform twisted angles with only ∼5% deviation can also be prepared. Overall, our method demonstrates great potential for achieving vdW homo-/heterostructures with bubble-free interfaces and uniform film features.

Graphical abstract: Towards bubble-free, centimeter-sized bilayer graphene enabled by backside lamination

Supplementary files

Article information

Article type
Communication
Submitted
29 Apr. 2023
Accepted
02 Aug. 2023
First published
02 Aug. 2023

J. Mater. Chem. C, 2023,11, 11814-11821

Towards bubble-free, centimeter-sized bilayer graphene enabled by backside lamination

M. Yan, X. Gao, J. Qian, X. Gao, J. Tang, Y. Wang, Y. Wang, J. Tang, L. Zheng, K. Jia, F. Jia, H. Liu, G. Gao and H. Peng, J. Mater. Chem. C, 2023, 11, 11814 DOI: 10.1039/D3TC01513K

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