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Real time observation of initial thermal oxidation using O$$_{2}$$ gas on Si(0 0 1) surface by means of synchrotron radiation Si-2p photoemission spectroscopy

Yoshigoe, Akitaka ; Moritani, Kosuke; Teraoka, Yuden

It is well known that the initial Si(0 0 1) oxidation by O$$_{2}$$ gas is an important reaction system because it is usually used to form gate-oxide films on MOSFET. With decreasing the size of ULSI, it is necessary to control the surface reaction with atomic scales. In this study, we report ${it the real time in-situ}$ observation of thermal oxidation using O$$_{2}$$ gas on Si(0 0 1) surface by means of synchrotron radiation photoemission spectroscopy at the soft x-ray beamline, BL23SU, in the SPring-8. We clarified the chemisorption processes of O$$_{2}$$ on Si(0 0 1) surface over 773K regions at the initial oxidation stages from the results of Si2p core-level shifts. The fundamental understanding of surface reaction is expected to contribute the development of the future nanotechnology.

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Category:Chemistry, Physical

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