Strategies on Phase Control in Transition Metal Dichalcogenides

• Published in: Advanced functional materials Vol. 28; no. 47
• Main Authors: Wang, Renyan, Yu, Yiwei, Zhou, Shasha, Li, Huiqiao, Wong, Hoilun, Luo, Zhengtang, Gan, Lin, Zhai, Tianyou
• Format: Journal Article
• Language: English
• Published: Hoboken Wiley Subscription Services, Inc 21.11.2018
• Subjects: 2D materials; Chalcogenides; Control methods; Interlayers; Layered materials; Materials science; Phase control; phase transition; Phase transitions; Stability; Transition metal compounds; transition metal dichalcogenides
• ISSN: 1616-301X; 1616-3028
• DOI: 10.1002/adfm.201802473

Transition metal dichalcogenides (TMDs) consist of dozens of ultrathin layered materials that have significantly different properties due to their varied phases, which determine the properties and application range of TMDs. Interestingly, a controllable phase transition in TMDs is achieved extensively with the use of several methods. Thus, phase control is a promising way to fully exploit the potential of TMDs. This review introduces the recent rapid development of the study of the TMD phase control, starting from the basic conception of the phase and phase transition in TMDs to the strategies for obtaining phase control. The different strategies are roughly classified into several types based on their characteristics: doping, synthesis method, strain, thermal method, and interlayer coupling. Finally, an evaluation on the prospect of the emergent strategies is provided. 2D transition metal dichalcogenides (TMDs) have various stable phases. Phase determines the basic properties of 2D TMDs. Thus, how to precisely control the phase of TMDs is the key issue for the full utilization of TMDs in future. Here, the main strategies for triggering phase transition in 2D TMDs are summarized and evaluated for future research.