Authors

Miaomiao Cui, Department of Chemistry, College of Chemistry and Chemical Engineering; State Key Laboratory of Physical Chemistry of Solid Surfaces (PCOSS); Engineering Research Center of Electrochemical Technologies of Ministry of Education; Xiamen University; Xiamen 361005, China
Lianhuan Han, Department of Chemistry, College of Chemistry and Chemical Engineering; State Key Laboratory of Physical Chemistry of Solid Surfaces (PCOSS); Engineering Research Center of Electrochemical Technologies of Ministry of Education; Xiamen University; Xiamen 361005, China; Department of Mechanical and Electrical Engineering, Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University; Xiamen 361005, China
Lanping Zeng, Department of Chemistry, College of Chemistry and Chemical Engineering; State Key Laboratory of Physical Chemistry of Solid Surfaces (PCOSS); Engineering Research Center of Electrochemical Technologies of Ministry of Education; Xiamen University; Xiamen 361005, China
Jiayao Guo, Department of Chemistry, College of Chemistry and Chemical Engineering; State Key Laboratory of Physical Chemistry of Solid Surfaces (PCOSS); Engineering Research Center of Electrochemical Technologies of Ministry of Education; Xiamen University; Xiamen 361005, China
Weiying Song, Department of Chemistry, College of Chemistry and Chemical Engineering; State Key Laboratory of Physical Chemistry of Solid Surfaces (PCOSS); Engineering Research Center of Electrochemical Technologies of Ministry of Education; Xiamen University; Xiamen 361005, China
Chuan Liu, Department of Chemistry, College of Chemistry and Chemical Engineering; State Key Laboratory of Physical Chemistry of Solid Surfaces (PCOSS); Engineering Research Center of Electrochemical Technologies of Ministry of Education; Xiamen University; Xiamen 361005, China
Yuanfei Wu, Department of Chemistry, College of Chemistry and Chemical Engineering; State Key Laboratory of Physical Chemistry of Solid Surfaces (PCOSS); Engineering Research Center of Electrochemical Technologies of Ministry of Education; Xiamen University; Xiamen 361005, China
Shiyi Luo, Department of Chemistry, College of Chemistry and Chemical Engineering; State Key Laboratory of Physical Chemistry of Solid Surfaces (PCOSS); Engineering Research Center of Electrochemical Technologies of Ministry of Education; Xiamen University; Xiamen 361005, China
Yunhua Liu, National CAD Support Software Engineering Research Center Huazhong University of Science and Technology, Wuhan 430074, China
Dongping Zhan, Department of Chemistry, College of Chemistry and Chemical Engineering; State Key Laboratory of Physical Chemistry of Solid Surfaces (PCOSS); Engineering Research Center of Electrochemical Technologies of Ministry of Education; Xiamen University; Xiamen 361005, China

Document Type

Article

Publication Title

Micropatterning and Functionalization of Single Layer Graphene: Tuning Its Electron Transport Properties

Corresponding Author(s)

Lianhuan Han(hanlianhuan@xmu.edu.cn);
Yunhua Liu(liuyh@mail.hust.edu.cn);
Dongping Zhan(dpzhan@xmu.edu.cn)

Abstract

As a promising 2D material, graphene exhibits excellent physical properties including single-atom-scale thickness and remarkably high charge carrier mobility. However, its semi-metallic nature with a zero bandgap poses challenges for its application in high-performance field-effect transistors (FETs). In order to overcome these limitations, various approaches have been explored to modulate graphene's bandgap, including nanoscale confinement, external field induction, doping, and chemical micropatterning. Nevertheless, the stability and controllability still need to be improved. In this study, we propose a feasible method that combines electrochemical bromination and photolithography to precisely tune the electron transport properties of single layer graphene (SLG). Through this method, we successfully fabricated various brominated SLG (SLGBr) micropatterns with high accuracy. Futher investigation revealed that the electron transport properties of SLG can be conveniently tuned by controlling the degree of bromination. The SLGBr exhibited a resistance, and have a decreasing conductance with the bromination degree increasing. When the bromination degree increased to a critical value, the SLGBr demonstrated semiconducting characteristics. This research offers a prospective route for the fabrication of graphene-based devices, providing potential applications in the realm of microelectronics.

Graphical Abstract

Keywords

Graphene patterning; Electron transport; Electrochemical bromination; Photolithography; All graphene device

Online Date

9-25-2023

2305251-SI.pdf (498 kB)

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