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

被引：4

作者：

Park, Jun Kue ^{[1
,2
]}

Lee, Kyu Won ^{[1
,2
]}

Han, Jun Hee ^{[1
,2
]}

Kweon, Jin Jung ^{[1
,2
]}

Kim, Dowan ^{[1
,2
]}

Lee, Cheol Eui ^{[1
,2
]}

Lim, Sun-Taek ^{[3
]}

Kim, Gon-Ho ^{[3
]}

Noh, S. J. ^{[4
]}

Kim, H. S. ^{[4
]}

机构：

[1] Korea Univ, Dept Phys, Seoul 136713, South Korea

[2] Korea Univ, Inst Nano Sci, Seoul 136713, South Korea

[3] Seoul Natl Univ, Dept Nucl Engn, Seoul 151744, South Korea

[4] Dankook Univ, Dept Appl Phys, Yongin 448701, South Korea

来源：

JOURNAL OF APPLIED PHYSICS | 2013年 / 114卷 / 21期

基金：

新加坡国家研究基金会;

关键词：

RAMAN-SPECTROSCOPY; C-H; GRAPHENE; BEHAVIOR; SURFACE; XPS;

D O I：

10.1063/1.4838156

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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.

引用

页数：4

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