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Article Dans Une Revue Chemical Science Année : 2023

Electrochemical regulation of the band gap of single layer graphene: from semimetal to semiconductor

Lanping Zeng
  • Fonction : Auteur
Weiying Song
  • Fonction : Auteur
Xiangfeng Jin
  • Fonction : Auteur
Quanfeng He
  • Fonction : Auteur
Lianhuan Han
  • Fonction : Auteur
Yuan-Fei Wu
  • Fonction : Auteur
Corinne Lagrost
Yann Leroux
Yang Cao
  • Fonction : Auteur
  • PersonId : 1248137
Jun Cheng

Résumé

As a semimetal with a zero band gap and single-atom-scale thickness, single layer graphene (SLG) has excellent electron conductivity on its basal plane. If the band gap could be opened and regulated controllably, SLG would behave as a semiconductor. That means electronic elements or even electronic circuits with single-atom thickness could be expected to be printed on a wafer-scale SLG substrate, which would bring about a revolution in Moore's law of integrated circuits, not by decreasing the feature size of line width, but by piling up the atomic-scale-thickness of an SLG circuit board layer by layer. Employing scanning electrochemical microscopy (SECM), we have demonstrated that the electrochemically induced brominating addition reaction can open and regulate the band gap of SLG by forming SLG bromide (SLGBr). The SLG/SLGBr/SLG Schottky junction shows excellent performance in current rectification, and the rectification potential region can be regulated by tuning the degree of bromination of SLG. This work provides a feasible and effective way to regulate the band gap of SLG, which would open new applications for SLG in micro–nano electronics and ultra-large-scale integrated circuits (ULSI).

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Chimie
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Dates et versions

hal-04073003 , version 1 (30-05-2023)

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Paternité - Pas d'utilisation commerciale

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Lanping Zeng, Weiying Song, Xiangfeng Jin, Quanfeng He, Lianhuan Han, et al.. Electrochemical regulation of the band gap of single layer graphene: from semimetal to semiconductor. Chemical Science, 2023, ⟨10.1039/D2SC06800A⟩. ⟨hal-04073003⟩
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