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首页> 外文期刊>The Journal of Chemical Physics >Adsorption of ethylene on Sn and In terminated Si(001) surface studied by photoelectron spectroscopy and scanning tunneling microscopy
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Adsorption of ethylene on Sn and In terminated Si(001) surface studied by photoelectron spectroscopy and scanning tunneling microscopy

机译：用光电子能谱和扫描隧道显微镜研究乙烯在锡和In终止的Si（001）表面上的吸附

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Interaction of ethylene (C2H4) with Si(001)-Sn-2 x 2 and Si(001)-In-2 x 2 at room temperature has been studied using core level (C 1s) X-ray photoelectron spectroscopy with synchrotron radiation and scanning tunneling microscopy. Sn and In form similar dimer chains on Si(001) 2 x 1, but exhibit different interaction with ethylene. While ethylene adsorbs on top of Sn dimers of the Si(001)-Sn-2 x 2 surface, the Si(001)-In-2 x 2 surface turned out to be inert. Furthermore, the reactivity of the Sn terminated surface is found to be considerably decreased in comparison with Si(001) 2 x 1. According to the proposed adsorption model ethylene bonds to Sn dimers via [2 + 2] cycloaddition by interacting with their pi dimer bonds. In contrast, indium dimers do not contain p bonds, which renders the In terminated Si(001) surface inert for ethylene adsorption. Published by AIP Publishing.
机译：研究了乙烯（C2H4）与Si（001）-Sn-2 x 2和Si（001）-In-2 x 2在室温下的相互作用，使用了具有同步加速器辐射的核能级（C 1s）X射线光电子能谱和扫描隧道显微镜。 Sn和In在Si（001）2 x 1上形成相似的二聚体链，但与乙烯的相互作用不同。当乙烯吸附在Si（001）-Sn-2 x 2表面的Sn二聚体上时，Si（001）-In-2 x 2表面却是惰性的。此外，发现与Si（001）2 x 1相比，Sn终止表面的反应性大大降低。根据拟议的吸附模型，乙烯通过[2 + 2]环加成通过与pi二聚体相互作用而与Sn二聚体键合。债券。相反，铟二聚体不包含p键，这使In末端的Si（001）表面对乙烯的吸附呈惰性。由AIP Publishing发布。

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