Synthesis of Meta Symmetric 1T’‐WTe2 Using an Edge‐Induced Mechanism,Chinese Journal of Chemistry

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Synthesis of Meta Symmetric 1T’‐WTe2 Using an Edge‐Induced Mechanism
Chinese Journal of Chemistry ( IF 5.5 ) Pub Date : 2020-03-11 , DOI: 10.1002/cjoc.202000079
Yao Xiao ₁ , Mengyue Zhou ₂ , Jinglu Liu ₂ , Bin Wei ₃ , Shuanglin Yue ₄ , Yuan Zhou ₅ , Kena Yang ₂ , Tao Zhang ₂ , Mengqi Zeng ₂ , Zhongchang Wang ₃ , Lei Fu _{1,

2}

Affiliation

Lattice symmetry is vital to the properties of two‐dimensional (2D) materials, yet their fixed symmetry cannot meet the increasing requirements in highly efficient and programmable electrical transport. If the structural diversity of 2D materials, as demonstrated by 1T’‐WTe₂, is improved without any phase transition or structural reconstruction, excellent metallic 1T’‐WTe₂ would be possibly used for integrated devices. Here, we realized meta symmetry of 1T’‐WTe₂ by using an edge‐induced mechanism, which is recognized as the combination of the intrinsic C _2v symmetry and sixfold axes. On account of the dynamically controlled growth, the meta symmetric 1T’‐WTe₂ with ~94.9% purity is obtained for the first time. Meta symmetry will also keep the intrinsic electrical properties of 1T’‐WTe₂ over the node. Such meta symmetry could not only enrich the structural diversity of 1T’‐WTe₂, but also be extended to other low‐symmetry 2D materials, which would be promising for customized circuits and devices.

中文翻译：

利用边缘诱导机制合成亚对称1T'-WTe2

晶格对称性对二维（2D）材料的性能至关重要，但是它们的固定对称性不能满足高效和可编程电传输中日益增长的要求。如果2T材料的结构多样性（如1T'-WTe _2所示）得到改善而没有任何相变或结构重建，那么极好的金属1T'-WTe ₂可能会用于集成设备。在这里，我们通过边缘诱导机制实现了1T'-WTe ₂的亚对称，这被认为是本征C _2v对称和六倍轴的组合。由于动态控制的增长，亚对称1T'-WTe ₂首次获得〜94.9％的纯度。元对称还将在节点上保持1T'-WTe ₂的固有电特性。这种亚对称性不仅可以丰富1T'-WTe ₂的结构多样性，而且可以扩展到其他低对称性2D材料，这对于定制电路和设备将是有希望的。

更新日期：2020-03-11

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