Recently there have been many research breakthroughs in two-dimensional (2D) materials including graphene, boron nitride (h-BN), black phosphors (BPs), and transition-metal dichalcogenides (TMDCs). The unique electrical, optical, and thermal properties in 2D materials are associated with their strictly defined low dimensionalities. These materials provide a wide range of basic building blocks for next-generation electronics. The chemical vapor deposition (CVD) technique has shown great promise to generate high-quality TMDC layers with scalable size, controllable thickness, and excellent electronic properties suitable for both technological applications and fundamental sciences. The capability to precisely engineer 2D materials by chemical approaches has also given rise to fascinating new physics, which could lead to exciting new applications. In this Review, we introduce the latest development of TMDC synthesis by CVD approaches and provide further insight for the controllable and reliable synthesis of atomically thin TMDCs. Understanding of the vapor-phase growth mechanism of 2D TMDCs could benefit the formation of complicated heterostructures and novel artificial 2D lattices.

中文翻译：

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二维层状过渡金属双硫族化物的外延生长：生长机理，可控性和可扩展性。

最近，在二维（2D）材料中已经有了许多研究突破，包括石墨烯，氮化硼（h-BN），黑色磷光体（BPs）和过渡金属二卤化物（TMDC）。二维材料中独特的电，光和热性能与其严格定义的低尺寸有关。这些材料为下一代电子产品提供了广泛的基本构建基块。化学气相沉积（CVD）技术已显示出产生具有可缩放尺寸，可控制厚度和适用于技术应用和基础科学的优异电子性能的高质量TMDC层的巨大前景。通过化学方法精确地工程化2D材料的能力也引起了令人着迷的新物理学的出现，这可能会导致令人兴奋的新应用。在本综述中，我们介绍了通过CVD方法合成TMDC的最新进展，并为可控和可靠的原子薄TMDC合成提供了进一步的见解。了解2D TMDC的气相生长机理可能有益于复杂的异质结构和新颖的人工2D晶格的形成。