Low-energy D+ and H+ ion irradiation effects on highly oriented pyrolytic graphite

Jun Kue Park, Kyu Won Lee, Jun Hee Han, Jin Jung Kweon, Dowan Kim, Cheol Eui Lee, Sun Taek Lim, Gon Ho Kim, S. J. Noh, H. S. Kim

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3 Citations (Scopus)

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 sp2 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 sp3 bonding and π - π * transition, the sp3 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.

Original languageEnglish
Article number214310
JournalJournal of Applied Physics
Volume114
Issue number21
DOIs
Publication statusPublished - 2013 Dec 7

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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