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On the adhesion features of Ag nanolayers on differently-passivated Si(001)(2x1) substrates

A. IOANID1,* , M. DIEACONU1, S. ANTOHE1

Affiliation

  1. Faculty of Physics, University of Bucharest, Bucharest-Magurele, Romania

Abstract

Modelling of the metalic overlayer properties demands the understanding of the physical features of the metal/support adhesion that is possible by a quantitative analysis of the intim metal-atom/support-atom interactions.We propose an quantitative evaluation for the silver (Ag) structures deposited on porous silicon(PS) surface, that is of the interactions Ag0/PS and Ag+/ PS at PS/aqueous AgNO3 solution interface, for three types of terminated PS surface, Si-H, Si-O, Si-OH. Mainly results show that the binding energy metal/support, is greatest for hydrophilic surface support (Si-O and Si-OH) for both metal atoms and ions and that the metal structures (few atomic layer thickness) deposited on hydrophilic surface consists mainly from islands, while that deposited on hydrophobic surface are rather compact films..

Keywords

Pair potential, N-body potential, Dispersive interaction, Surface polarity, Lateral diffusion.

Submitted at: Aug. 18, 2011
Accepted at: Nov. 23, 2011

Citation

A. IOANID, M. DIEACONU, S. ANTOHE, On the adhesion features of Ag nanolayers on differently-passivated Si(001)(2x1) substrates, Journal of Optoelectronics and Advanced Materials Vol. 13, Iss. 11-12, pp. 1470-1477 (2011)