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Low-energy D+ and H+ ion irradiation effects on highly oriented pyrolytic graphite
- Authors
- Park, Jun Kue; Lee, Kyu Won; Han, Jun Hee; Kweon, Jin Jung; Kim, Dowan; Lee, Cheol Eui; Lim, Sun-Taek; Kim, Gon-Ho; Noh, S. J.; Kim, H. S.
- Issue Date
- 7-12월-2013
- Publisher
- AMER INST PHYSICS
- Citation
- JOURNAL OF APPLIED PHYSICS, v.114, no.21
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF APPLIED PHYSICS
- Volume
- 114
- Number
- 21
- ISSN
- 0021-8979
- Abstract
- We have investigated the low-energy (100 eV) D+ and H+ ion irradiation effects on the structural and chemical properties of highly oriented pyrolytic graphite (HOPG). Structural disorder due to the ion irradiation was identified by the Raman spectroscopy, the D+ irradiation giving rise to greater structural disorder than the H+ irradiation. Only sp(2) bonding was identified in the X-ray photoemission spectroscopy of the D+-irradiated HOPG, indicating no change in the surface chemical structure. The H+ irradiation, on the other hand, gave rise to sp(3) bonding and pi-pi* transition, the sp(3) bonding increasing with increasing irradiation dose. It is thus shown that the chemical properties of the HOPG surface may be sensitively modified by the low-energy H+ ion irradiation, but not by the low-energy D+ ion irradiation. (C) 2013 AIP Publishing LLC.
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