电化学（中英文）2024，Vol.30Issue(3)：34-39,6.DOI:10.13208/j.electrochem.2305251
单层石墨烯微米尺度图案化和功能化:调控电子传输特性
Micropatterning and Functionalization of Single Layer Graphene:Tuning Its Electron Transport Properties
摘要
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 photoli-thography 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.关键词
石墨烯图案化/电子传输/电化学溴化/光刻/全石墨烯器件Key words
Graphene patterning/Electron transport/Electrochemical bromination/Photolithography/All graphene device引用本文复制引用
崔苗苗,詹东平,韩联欢,曾兰平,郭佳瑶,宋维英,刘川,吴元菲,罗世翊,刘云华..单层石墨烯微米尺度图案化和功能化:调控电子传输特性[J].电化学（中英文）,2024,30(3):34-39,6.基金项目
The financial support by the National Natural Science Foundation of China(21827802,22202166,22132003,22021001)and the 111 Project(B08027,B17027)are appreciated.We thank Tan Kah Kee Innovation Laboratory for providing characteriza-tion services. （21827802,22202166,22132003,22021001）
