Abstract
Surface modification using highly charged ions is presented. The surface of a Si wafer which is covered with a native oxide layer is used as a sample. The sample was irradiated with Ar11+ ions at a fluence of 1013–1014/cm2. The Ar11+ ions were obtained from an electron beam ion source (Kobe EBIS). The surface was investigated using secondary electron microscopy, X-ray photoelectron spectroscopy and high-resolution electron energy loss spectroscopy. The obtained results suggest that the native oxide layer is sputtered by the irradiation of Ar11+ ions and that the structural modification makes the density of the oxide layer lower and the electric conductivity higher.
Published Version
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