Surface diffusion of Pb on clean Si surfaces

Abstract

Pb diffusion on clean Si(111), (100) and (110) surfaces was studied by Auger electron spectroscopy and low energy electron diffraction in the temperature range from 100 to 300°C. It is shown that lead transport along silicon surfaces takes place via the mechanism of solid-phase spreading with a sharp moving boundary. The temperature dependence of the Pb diffusion coefficients on Si(111), (100) and (110) surfaces have been obtained. A Si(110)-4 × 2-Pb surface structure has been observed for the first time. © Central European Science Journals. All rights reserved.