新型二维铜族硫族化合物的研究进展

摘要/Abstract

摘要： 二维材料因其纳米级尺寸、超凡的电子特性、出色的机械性能等,被视为下一代信息器件的理想材料。随着外延生长等自下而上制备方法以及材料计算方法的发展和提高,越来越多的体相非层状的二维材料被制备和发现。近年来在信息器件等领域具有应用潜力的体相非层状的二维铜族(11族)硫族化合物得到广泛关注,铜族元素位于化学元素周期表中的11族,主要包括铜、银和金等元素。本文综述了二维铜族硫族化合物的研究进展,以化学计量比为主线,将二维铜族硫族化合物分为MX单层(M=Cu,Ag,Au;X=O,S,Se,Te)、M₂X单层以及其他化学计量比的铜族硫族化合物单层。从实验合成和理论模拟两个角度出发,对二维铜族硫族化合物原子结构、能带结构、电学特性等进行介绍。从现有的报道来看,体相非层状的新型二维铜族硫族化合物不仅包含半导体、金属等电子性质,还表现出拓扑、磁性等丰富的新奇物性,是一类值得关注的新型二维功能材料。

关键词: 二维材料, 铜族硫族化合物, 体相非层状, 电子结构, 第一性原理计算, 密度泛函理论

Abstract: Two-dimensional (2D) materials are considered as the ideal materials for the next-generation information devices, owing to their nanoscale sizes, novel electronic properties, excellent mechanical properties, et al. In recent years, with the development and improvement of bottom-up preparation methods, such as epitaxial growth method, and material calculation methods, more and more two-dimensional materials with non-layered bulk phases have been prepared and discovered. Here, the research progresses of new two-dimensional group 11 (include Cu, Ag, Au) chalcogenides with non-layered bulk phases which show application potential in information devices and other fields are summarized. Taking stoichiometric ratio as the main line, the atomic structures and physical properties of monolayer MX (M=Cu, Ag, Au; X=O, S, Se, Te), M₂X and other stoichiometric-ratio group 11 chalcogenides are introduced in detail from both experimental and theoretical perspectives. Two-dimensional group 11 chalcogenides possess not only all electronic properties (metal, semiconductor and insulator) but also abundant novel physical properties (superconductivity, topology, magnetism, etc.). Due to the novel properties and potential applications of the 2D group 11 chalcogenides, the novel class of 2D materials is worthy of more attention.

Key words: two-dimensional material, group 11 chalcogenide, non-layered bulk phase, electronic structure, first-principle calculation, density functional theory

中图分类号:

TB34
O469

刘涵, 高蕾, 薛宇飞, 叶宇娇, 曾春华. 新型二维铜族硫族化合物的研究进展[J]. 人工晶体学报, 2022, 51(8): 1493-1510.

LIU Han, GAO Lei, XUE Yufei, YE Yujiao, ZENG Chunhua. Research Progress of Two-Dimensional Group 11 Chalcogenides[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2022, 51(8): 1493-1510.

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