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摘要: 用X射线光电子能谱（XPS）研究了3.0keV Ar离子轰击高定向裂解石墨（HOPG）引起的表面结构的变化。通过对C1s、C KLL及C2s谱峰形状的定性和定量分析，表明Ar离子轰击将破坏共价π键并导致表面局域sp2杂化C键向sp3杂化C键转化。sp3/sp2之比依赖于离子轰击时间。Abstract: Surface structure changes of high oriented pyrolytic graphite induced by 3.0keV Ar ion bombardment were studied using Xray photoelectron spectroscopy （XPS）. The spectra, including C1s, Xrayexcited Auger electron spectroscopy and XPS valence band spectroscopy were analyzed qualitatively and quantitatively. Results show that the conjugated π bond can be destroyed and local sp2 hybridized carbon can be developed into sp3 hybridized carbon by Ar ion bombardment. The ratio of sp3 to sp2 depends on the bombardment time.
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