Abstract
Graphene-like group IV semiconductors such as silicene and germanene may be organic functionalized to supply the necessary tools for the manipulations at a molecular level that the microelectronics industry will demand within the following years. In particular, the organic functionalization with molecules containing unsaturated C–C bonds by means of a radical-initiated reaction on hydrogenated surfaces constitutes a favorable route for the attachment of organic layers. In this work we have evaluated the organic functionalization of the hydrogenated germanene (H-germanene) with acetylene, ethylene, and styrene and compared these results with previous calculations made by us of the adsorption on the hydrogenated graphene surface (H-graphene) and on the hydrogenated silicene surface (H-silicene). Results toward organic functionalization from H-germanene and H-graphene are markedly different. On the H-germanene the adsorption of acetylene and ethylene is energetically favorable, while the adsorption of styren...
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