Si(100)2 × 1: the clean and ammonia exposed surface studied with high resolution core-level spectroscopy

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Abstract

High resolution core-level spectroscopy was utilized to study the clean and NH3 exposed Si(100)2×1 surface. The clean surface exhibits two approximately equal intensity surface core-level components at -0.48 and 0.28 eV binding energy referred to the bulk component. NH3 exposure at 300 K induces two surface core-level components at 0.31 and 0.72 eV relative binding energy that can be assigned to surface Si atoms bonded to H and NH2, respectively. Alternative interpretations for the adsorption based on different interpretations of the clean surface core-level spectra are discussed. The steps between adsorption at 300 K and the beginning of subsurface silicon nitride formation by annealing the surface up to 1000 K are investigated. © 1992.

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Larsson, C. U. S., Andersson, C. B. M., Prince, N. P., & Flodström, A. S. (1992). Si(100)2 × 1: the clean and ammonia exposed surface studied with high resolution core-level spectroscopy. Surface Science, 271(3), 349–354. https://doi.org/10.1016/0039-6028(92)90899-H

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