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Article Dans Une Revue Diamond and Related Materials Année : 2009

Thermal Grafting of organic monolayers on amorphous carbon and silicon (111) surfaces : A comparative study

Résumé

Thermally-assisted (160 °C) liquid phase grafting of linear alkene molecules has been performed simultaneously on amorphous carbon (a-C) and hydrogen passivated crystalline silicon Si(111):H surfaces. Atomically flat a-C films with a high sp3 average surface hybridization, sp3 / (sp2 + sp3) = 0.62, were grown using pulsed laser deposition (PLD). Quantitative analysis of X-ray photoelectron spectroscopy, X-ray reflectometry and spectroscopic ellipsometry data show the immobilization of a densely packed (> 3 × 1014 cm− 2) single layer of organic molecules. In contrast with crystalline Si(111):H and other forms of carbon films, no surface preparation is required for the thermal grafting of alkene molecules on PLD amorphous carbon. The molecular grafted a-C surface is stable against ambient oxidation, in contrast with the grafted crystalline silicon surface.

Dates et versions

hal-00411875 , version 1 (31-08-2009)

Identifiants

Citer

H. Sabbah, S. Ababou-Girard, A. Zebda, D. David, Bruno Fabre, et al.. Thermal Grafting of organic monolayers on amorphous carbon and silicon (111) surfaces : A comparative study. Diamond and Related Materials, 2009, 18 (9), pp.1074-1080. ⟨10.1016/j.diamond.2009.01.037⟩. ⟨hal-00411875⟩
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