Structural Metastability in Chalcogenide Semiconductors: The Role of Chemical Bonding,Physica Status Solidi (B) - Basic Solid State Physics

当前位置： X-MOL 学术 › Phys. Status Solidi B › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Structural Metastability in Chalcogenide Semiconductors: The Role of Chemical Bonding
Physica Status Solidi (B) - Basic Solid State Physics ( IF 1.5 ) Pub Date : 2020-06-04 , DOI: 10.1002/pssb.202000138
Alexander V. Kolobov _{1,

2} , Yuta Saito ₂ , Paul Fons ₂ , Milos Krbal ₃

Affiliation

This article reviews metastability in three different classes of chalcogenides—chalcogenide glasses, phase‐change alloys, and transition‐metal dichalcogenides—with the focus on the relationship between structural metastability and the nature of chemical bonding. While the presence of lone‐pair electrons in chalcogenide glasses enables a variety of bond switching processes, the existence of resonant (metavalent) bonding in phase‐change alloys is key to the transformation between the crystalline and amorphous states. Strong covalent bonds in 2D transition‐metal dichalcogenides limit the transformation to slides and buckling of atomic planes without major bond rupture. It is proposed that combining different kinds of local bonding may be an efficient way to engineer amorphous chalcogenides with desired properties.

中文翻译：

硫族化物半导体中的结构亚稳定性：化学键的作用

本文将对三种不同类型的硫族化物（硫族化物玻璃，相变合金和过渡金属二硫属化物）的亚稳性进行研究，重点是结构亚稳性与化学键合性质之间的关系。硫族化物玻璃中孤对电子的存在可以实现多种键转换过程，而相变合金中共振（共价）键的存在是晶态和非晶态转变的关键。二维过渡金属二硫键中的强共价键将转换限制为原子平面的滑动和屈曲，而不会发生重大键断裂。提出组合不同种类的局部键合可能是工程改造具有期望性质的非晶硫族化物的有效方法。

更新日期：2020-06-04

点击分享查看原文

点击收藏

阅读更多本刊最新论文