Large-Scale Synthesis and Systematic Photoluminescence Properties of Monolayer MoS2 on Fused Silica

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• 作者：Yi Wan ; Hui Zhang ; Kun Zhang ; Yilun Wang ; Bowen Sheng ; Xinqiang Wang ; Lun Dai
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2016
• 出版时间：July 20, 2016
• 年：2016
• 卷：8
• 期：28
• 页码：18570-18576
• 全文大小：477K
• 年卷期：0
• ISSN：1944-8252

文摘

Monolayer MoS₂, with fascinating mechanical, electrical, and optical properties, has generated enormous scientific curiosity and industrial interest. Controllable and scalable synthesis of monolayer MoS₂ on various desired substrates has significant meaning in both basic scientific research and device application. Recent years have witnessed many advances in the direct synthesis of single-crystalline MoS₂ flakes or their polycrystalline aggregates on numerous diverse substrates, such as SiO₂–Si, mica, sapphire, h-BN, and SrTiO₃, etc. In this work, we used the dual-temperature-zone atmospheric-pressure chemical vapor deposition method to directly synthesize large-scale monolayer MoS₂ on fused silica, the most ordinary transparent insulating material in daily life. We systematically investigated the photoluminescence (PL) properties of monolayer MoS₂ on fused silica and SiO₂–Si substrates, which have different thermal conductivity coefficients and thermal expansion coefficients. We found that there exists a stronger strain on monolayer MoS₂ grown on fused silica, and the strain becomes more obvious as temperature decreases. Moreover, the monolayer MoS₂ grown on fused silica exhibits the unique trait of a fractal shape with tortuous edges and has stronger adsorbability. The monolayer MoS₂ grown on fused silica may find application in sensing, energy storage, and transparent optoelectronics, etc.