Gas barrier properties of chemical vapor-deposited graphene to oxygen imparted with sub-electronvolt kinetic energy

Shuichi Ogawa, Hisato Yamaguchi, Edward F. Holby, Takatoshi Yamada, Akitaka Yoshigoe, Yuji Takakuwa

Research output: Contribution to journalArticlepeer-review

Abstract

Graphene gas-barrier performance holds great interest from both scientific and technological perspectives. Using in situ synchrotron X-ray photoelectron spectroscopy, we demonstrate that chemical vapor-deposited monolayer graphene loses its gas-barrier performance almost completely when oxygen molecules are imparted with sub-electronvolt kinetic energy but retains its gas-barrier performance when the molecules are not energized. The permeation process is nondestructive. Molecular dynamics-based simulation suggests kinetic energy-mediated chemical reactions catalyzed by common graphene defects as a responsible mechanism.

Original languageEnglish
Pages (from-to)9159-9164
Number of pages6
JournalJournal of Physical Chemistry Letters
DOIs
Publication statusAccepted/In press - 2020

ASJC Scopus subject areas

  • Materials Science(all)
  • Physical and Theoretical Chemistry

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