Abstract
In this work we show the adsorption of acetonitrile (CH 3CN) and acrylonitrile (CH 2CHCN) on Si(0 0 1)-2 × 1 at room temperature by increasing the molecular doses. Especially, by means of XPS and LEED data, we stress the action of these molecules on the silicon surface locating the dangling-bonds quasi-saturation within 10 L. The shortage of nitrogen XPS signal and some anomalies in carbon spectra point to an invading action from a traditional X-ray source (Al-K α line) against chemisorbed molecules. In particular, we think that a long exposure to this radiation could break carbon–silicon bonds changing some adsorption geometries and making desorb molecular fragments.
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