Composition and phase engineering of metal chalcogenides and phosphorous chalcogenides
Composition and phase engineering of metal chalcogenides and phosphorous chalcogenides
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金属硫属化物和磷硫属化物的组成和相工程
DOI：
10.1038/s41563-022-01291-5
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发表时间：
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期刊：
影响因子：
41.2
通讯作者：
Kazu
中科院分区：
文献类型：
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作者：
Jiadong Zhou;Chao Zhu;Yao Zhou;Jichen Dong;Peiling Li;Zhaowei Zhang;Zhen Wang;Yung-Chang Lin;Jia Shi;Runwu Zhang;Yanzhen Zheng;Huimei Yu;Bijun Tang;Fucai Liu;Lin Wang;Liwei Liu;Gui-Bin Liu;Weida Hu;Yanfeng Gao;Haitao Yang;Weibo Gao;Li Lu;Yeliang Wang;Kazu
具有多相、多元素晶体的二维 (2D) 材料，例如过渡金属硫属化物 (TMC)（基于 V、Cr、Mn、Fe、Cd、Pt 和 Pd）和过渡金属磷硫属化物 (TMPC)，为探索新颖的物理现象提供了独特的平台。然而，通过化学气相沉积合成这些二维材料的单相/单一成分晶体仍然具有挑战性。在这里，我们揭示了一种基于竞争化学反应的生长机制来操纵成核和生长速率。基于该生长机制，可以实现67种具有确定相、可控结构和可调成分的TMC和TMPC。 FeXy 中的铁磁性和超导性可以通过 y 值进行调节，例如在 FeX 中观察到的超导性和 FeS2 单层中的铁磁性，证明了所生长的二维材料的高质量。这项工作为具有独特性质的二维 TMPC 和 TMC 的多学科探索铺平了道路。
Two-dimensional (2D) materials with multiphase, multielement crystals such as transition metal chalcogenides (TMCs) (based on V, Cr, Mn, Fe, Cd, Pt and Pd) and transition metal phosphorous chalcogenides (TMPCs) offer a unique platform to explore novel physical phenomena. However, the synthesis of a single-phase/single-composition crystal of these 2D materials via chemical vapour deposition is still challenging. Here we unravel a competitive-chemical-reaction-based growth mechanism to manipulate the nucleation and growth rate. Based on the growth mechanism, 67 types of TMCs and TMPCs with a defined phase, controllable structure and tunable component can be realized. The ferromagnetism and superconductivity in FeXy can be tuned by the y value, such as superconductivity observed in FeX and ferromagnetism in FeS2 monolayers, demonstrating the high quality of as-grown 2D materials. This work paves the way for the multidisciplinary exploration of 2D TMPCs and TMCs with unique properties.