低对称性二维ReS_(2)及其异质结的化学气相沉积法制备及性质

Low-Symmetry Two-Dimensional ReS_(2) and its Heterostructures: Chemical Vapor Deposition Synthesis and Properties

二维硫化铼(ReS_(2))是一种晶格对称元素少,纵向仅有原子级厚度的层状结构功能纳米材料。其晶体结构的低对称性使二维ReS_(2)具有丰富的各向异性理化性质,在微纳光子学、触觉传感器和各向异性电子器件等领域前景广阔。该类材料的应用开发依赖于高质量的合成和对其性质的深刻理解。本文首先从金属含铼前驱体、非金属含硫前驱体以及基底工程三个方面归纳了化学气相沉积法可控制备二维ReS_(2)的各种手段和生长机制。随后,按照合成步骤分“一步法”和“两步法”介绍了ReS_(2)水平和纵向异质结的制备最新进展。最后,综述了ReS_(2)在各向异性光学和电学方面的性质。本文还对二维ReS_(2)合成和性质研究的挑战和机遇提出了展望。

Two-dimensional(2D) rhenium disulfide(ReS_(2)) is a layer-structured functional nanomaterial with atomic thickness and few lattice symmetry elements. The low symmetry of the crystal structure endows 2D ReS_(2)with rich anisotropic physical and chemical properties, giving it great potential in the fieldsof nanophotonics, tactile sensors, and anisotropic electronic devices. The applications of 2D ReS_(2)rely on high-quality synthesis and a deep understanding of its properties. This review firstly categorizes the chemical vapor deposition(CVD) methods of ReS_(2)into three groups based on the types of the metallic and non-metallic precursors applied in the growth, as well as the substrates. Different CVD strategies and the corresponding growth mechanisms are systematically summarized. Subsequently, the recent progress in the preparation of ReS_(2)in-plane and vertical 2D heterostructures is introduced. Approaches are divided into “one-step method” and “two-step method” based on the number of steps used in the CVD process. Finally, the anisotropic optical and electronic properties of 2D ReS_(2)are discussed. This review also puts forward an outlook on the challenges and opportunities of the synthesis and property investigation of 2D ReS_(2).