Properties of Monolayer Silicene on Ag(111)
Properties of Monolayer Silicene on Ag(111)
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DOI：
10.1007/978-3-319-99964-7_7
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发表时间：
2018
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影响因子：
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通讯作者：
P. Vogt
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作者：
P. Vogt
硅烯的预期性质及其理论背景已在第 1 章中讨论。 1 – 3 以及第 1 章中合成这种新 2D 材料的不同方法。 5.已经提到，这种合成需要足够的衬底材料来适应单原子薄硅层的形成。这种材料是银，特别是Ag(111)表面平面。本章讨论了 Ag(111)() 表面外延形成的硅烯的形成和性质。我们将看到，由于与基材的相互作用，这些硅烯层的性质相对于独立硅烯层的性质发生了改变。因此，我们将其称为非外延硅烯，并详细研究其二维 (2D) 特性。更详细地观察 Ag(111) 上 Si 层的形成表明，根据具体的制备条件，可以形成多个 2D Si 相。将讨论这些结构的差异和相似之处。此外，我们将研究这些外延硅烯层的化学和温度稳定性，并揭示硅烯形成的极限。
The expected properties of silicene and their theoretical background have already been discussed in Chaps. 1 – 3 and the different ways to synthesize this new 2D material in Chap. 5 . It has already been mentioned that such a synthesis requires an adequate substrate material to accommodate the formation of a one-atom-thin silicon layer. Such a material is silver, in particular the Ag(111) surface plane. In this chapter the formation and properties of silicene formed epitaxially on the Ag(111)() surface are discussed. We will see that the properties of these silicene layers are modified with respect to the ones of free-standing silicene, due to the interaction with the substrate. For this reason we will refer to it asepitaxial siliceneand look in detail at its two-dimensional (2D) character. A more detailed look at the formation of Si layers on Ag(111) shows that, depending on the specific preparation conditions, several 2D Si phase can be formed. Differences and similarities of these structures will be discussed. Furthermore, we will draw the intention on the chemical and temperature stability of these epitaxial silicene layers and unveil the limits for the silicene formation.