MoS2 Enhanced T-Phase Stabilization and Tunability Through Alloying

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• 作者：Federico Raffone ; Can Ataca ; Jeffrey C. Grossman ; Giancarlo Cicero
• 刊名：The Journal of Physical Chemistry Letters
• 出版年：2016
• 出版时间：July 7, 2016
• 年：2016
• 卷：7
• 期：13
• 页码：2304-2309
• 全文大小：402K
• 年卷期：0
• ISSN：1948-7185

文摘

Two-dimensional MoS₂ is a promising material for nanoelectronics and catalysis, but its potential is not fully exploited since proper control of its multiple phases (H, T, ZT) and electronic properties is lacking. In this theoretical study, alloying is proposed as a method to stabilize the MoS₂ T-phase. In particular, MoS₂ is alloyed with another material that is known to exist in a monolayer MX₂ T-structure, and we show that the formation energy difference among phases decreases even for low impurity concentrations in MoS₂, and a relationship between impurity concentration and alloy band gap is established. This method can be potentially applied to many two-dimensional materials to tune/enhance their electronic properties and stabilities in order to suit the desired application.