Wang Ping, Yang Yang, Pan Er, Liu Fucai, Ajayan Pulickel M, Zhou Jiadong, Liu Zheng
Key Lab of Advanced Optoelectronic Quantum Architecture and Measurement (MOE), Beijing Key Lab of Nanophotonics, and Ultrafine Optoelectronic Systems, and School of Physics, School of Physics, Beijing Institute of Technology, Beijing, 100081, China.
School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 610054, China.
Small. 2022 Apr;18(13):e2105215. doi: 10.1002/smll.202105215. Epub 2021 Dec 19.
Layered metal chalcogenides, as a "rich" family of 2D materials, have attracted increasing research interest due to the abundant choices of materials with diverse structures and rich electronic characteristics. Although the common metal chalcogenide phases such as 2H and 1T have been intensively studied, many other unusual phases are rarely explored, and some of these show fascinating behaviors including superconductivity, ferroelectrics, ferromagnetism, etc. From this perspective, the unusual phases of metal chalcogenides and their characteristics, as well as potential applications are introduced. First, the unusual phases of metal chalcogenides from different classes, including transition metal dichalcogenides, magnetic element-based chalcogenides, and metal phosphorus chalcogenides, are discussed, respectively. Meanwhile, their excellent properties of different unusual phases are introduced. Then, the methods for producing the unusual phases are discussed, specifically, the stabilization strategies during the chemical vapor deposition process for the unusual phase growth are discussed, followed by an outlook and discussions on how to prepare the unusual phase metal dichalcogenides in terms of synthetic methodology and potential applications.
层状金属硫属化物作为二维材料中的一个“丰富”家族，由于具有结构多样且电子特性丰富的大量材料选择，已吸引了越来越多的研究兴趣。尽管常见的金属硫属化物相，如2H和1T，已得到深入研究，但许多其他不寻常的相却很少被探索，其中一些表现出包括超导性、铁电性、铁磁性等迷人的行为。从这个角度出发，介绍了金属硫属化物的不寻常相及其特性以及潜在应用。首先，分别讨论了不同类型金属硫属化物的不寻常相，包括过渡金属二硫属化物、基于磁性元素的硫属化物和金属磷硫属化物。同时，介绍了它们不同不寻常相的优异性能。然后，讨论了产生不寻常相的方法，具体而言，讨论了化学气相沉积过程中用于不寻常相生长的稳定策略，随后就合成方法和潜在应用方面如何制备不寻常相金属二硫属化物进行了展望和讨论。
