硅烯,一种很有前途的新型二维材料

IF 8.7 2区 工程技术 Q1 CHEMISTRY, PHYSICAL
Hamid Oughaddou , Hanna Enriquez , Mohammed Rachid Tchalala , Handan Yildirim , Andrew J. Mayne , Azzedine Bendounan , Gérald Dujardin , Mustapha Ait Ali , Abdelkader Kara
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引用次数: 194

摘要

硅烯是一种二维材料,具有非常吸引人的电子特性,具有广泛的应用;在硅基纳米电子技术中,它是一种特别有前途的材料。在过去的十年里,硅烯的存在和稳定性一直是很多争论的主题。理论研究首次预测了具有类似石墨烯电子特性的褶皱蜂窝结构。虽然这些研究是针对独立的硅烯,但到目前为止,硅烯的实验制造只能通过在晶体表面上的外延生长来实现。事实上,直到2010年,研究人员才首次提出了硅烯在Ag(111)和Ag(111)上形成的实验证据,这使得硅烯以类似石墨烯的方式出现。这个非常活跃的电场自然导致了硅烯在Ir(11 11), ZrB2(0 0 0 1)和Au(11 10)底物上的生长。然而,金属表面外延生长的硅烯的电子性能受到硅-金属强相互作用的影响。这促使了对多层硅烯生长的实验研究,尽管其“硅烯”结构的性质仍然值得怀疑。当然,和石墨烯一样,合成独立的硅烯是最大的挑战。最近有报道称,通过对二硅酸钙(CaSi2)的化学剥离,已经迈出了这方面的第一步。本文综述了迄今为止对硅烯进行的实验和理论研究。特别注意对金属衬底上硅烯电子性质的不同实验研究。在其他具有不同化学特性的衬底上生长硅烯的新途径以及可预见的应用,如纳米器件和新型电池。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Silicene, a promising new 2D material

Silicene is emerging as a two-dimensional material with very attractive electronic properties for a wide range of applications; it is a particularly promising material for nano-electronics in silicon-based technology. Over the last decade, the existence and stability of silicene has been the subject of much debate. Theoretical studies were the first to predict a puckered honeycomb structure with electronic properties resembling those of graphene. Though these studies were for free-standing silicene, experimental fabrication of silicene has been achieved so far only through epitaxial growth on crystalline surfaces. Indeed, it was only in 2010 that researchers presented the first experimental evidence of the formation of silicene on Ag(1 1 0) and Ag(1 1 1), which has launched silicene in a similar way to graphene. This very active field has naturally led to the recent growth of silicene on Ir(1 1 1), ZrB2(0 0 0 1) and Au(1 1 0) substrates. However, the electronic properties of epitaxially grown silicene on metal surfaces are influenced by the strong silicene–metal interactions. This has prompted experimental studies of the growth of multi-layer silicene, though the nature of its “silicene” structure remains questionable. Of course, like graphene, synthesizing free-standing silicene represents the ultimate challenge. A first step towards this has been reported recently through chemical exfoliation from calcium disilicide (CaSi2). In this review, we discuss the experimental and theoretical studies of silicene performed to date. Special attention is given to different experimental studies of the electronic properties of silicene on metal substrates. New avenues for the growth of silicene on other substrates with different chemical characteristics are presented along with foreseeable applications such as nano-devices and novel batteries.

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来源期刊
Progress in Surface Science
Progress in Surface Science 工程技术-物理:凝聚态物理
CiteScore
11.30
自引率
0.00%
发文量
10
审稿时长
3 months
期刊介绍: Progress in Surface Science publishes progress reports and review articles by invited authors of international stature. The papers are aimed at surface scientists and cover various aspects of surface science. Papers in the new section Progress Highlights, are more concise and general at the same time, and are aimed at all scientists. Because of the transdisciplinary nature of surface science, topics are chosen for their timeliness from across the wide spectrum of scientific and engineering subjects. The journal strives to promote the exchange of ideas between surface scientists in the various areas. Authors are encouraged to write articles that are of relevance and interest to both established surface scientists and newcomers in the field.
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