Raman spectroscopy study on the reactions of UV-generated oxygen atoms with single-layer graphene on SiO_2/Si substrates

Gwanghyun Ahn; Hye Ri Kim; Hong， Byung Hee (홍병희); Ryu Sunmin (류순민)

Raman spectroscopy study on the reactions of UV-generated oxygen atoms with single-layer graphene on SiO_2/Si substrates

Carbon Letters
Abbr : Carbon Lett.
2012, 13(1), pp.34-38
Publisher : Korean Carbon Society
Research Area : Natural Science > Natural Science General > Other Natural Sciences General

Gwanghyun Ahn ¹, Hye Ri Kim ², Hong， Byung Hee ³, Ryu Sunmin ⁴

¹Kyung Hee University
²Sungkyunkwan University
³서울대학교
⁴경희대학교

Accredited

ABSTRACT

Successful application of graphene requires development of various tools for its chemical modification. In this paper, we present a Raman spectroscopic investigation of the effects of UV light on single layer graphene with and without the presence of O_2 molecules. The UV emission from a low pressure Hg lamp photolyzes O_2 molecules into O atoms, which are known to form epoxy on the basal plane of graphene. The resulting surface epoxy groups were identified by the disorder-related Raman D band. It was also found that adhesive residues present in the graphene samples prepared by micro-mechanical exfoliation using adhesive tape severely interfere with the O atom reaction with graphene. The UV-induced reaction was also successfully applied to chemical vapor deposition-grown graphene. Since the current method can be readily carried out in ambient air only with UV light, it will be useful in modifying the surfaces of graphene and related materials.

KEYWORDS

graphene, Raman spectroscopy, oxygen, UV light, oxidation

Citation status

This is the result of checking the information with the same ISSN, publication year, volume, and start page between the WoS and the KCI journals. (as of 2023-01-02)

Total Citation Counts(KCI+WOS) (6) This is the number of times that the duplicate count has been removed by comparing the citation list of WoS and KCI.

* References for papers published after 2023 are currently being built.

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This paper was written with support from the National Research Foundation of Korea.

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Carbon Letters 2023 KCI Impact Factor : 1.35 KCI-WoS Impact Factor : 6.04