Influence of irradiation upon few-layered graphene using electron-beams and gamma-rays

Journal Article · Mon Jul 14 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4890379· OSTI ID:22311095

Wang, Yuqing; Feng, Yi; Mo, Fei; Qian, Gang; Chen, Yangming; Yu, Dongbo; Wang, Yang; Zhang, Xuebin ^[1]

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1. School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009 (China)

Few-layered graphene (FLG) is irradiated by electron beams and gamma rays. After 100 keV electron irradiation, the edges of FLG start bending, shrinking, and finally generate gaps and carbon onions due to sputtering and knock-on damage mechanism. When the electron beam energy is increased further to 200 keV, FLG suffers rapid and catastrophic destruction. Unlike electron irradiation, Compton effect is the dominant damage mechanism in gamma irradiation. The irradiation results indicate the crystallinity of FLG decreases first, then restores as increasing irradiation doses, additionally, the ratio (O/C) of FLG surface and the relative content of oxygen groups increases after irradiation.

• OSTI ID: 22311095
• Journal Information: Applied Physics Letters, Vol. 105, Issue 2; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COMPTON EFFECT
DAMAGE
ELECTRON BEAMS
GAMMA RADIATION
GRAPHENE
IRRADIATION
KEV RANGE
KNOCK-ON
OXYGEN
PHYSICAL RADIATION EFFECTS
RADIATION DOSES
SPUTTERING
SURFACES