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非中心对称的二维单晶体的生长

Guoliang Cui^1,2, Jiajie Qi³, Zhihua Liang^1,2

¹Guangdong Basic Research Center of Excellence for Structure and Fundamental Interactions of Matter, Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics, South China Normal University, Guangzhou 510631, China.

Precision chemistry

|October 30, 2024

概括

由于基板对称性,生长非中心对称的2D单晶具有挑战性. 这篇综述强调了精确的化学过程和材料的进步,如六角化 (hBN) 和过渡金属二化 (TMD).

科学领域:

材料科学材料科学材料科学
凝聚物质物理学凝聚物质物理学
纳米技术纳米技术

背景情况:

99%以上的二维 (2D) 材料是非中心对称的.
在中心对称基板上非中心对称的二维材料的生长导致不可避免的反平行岛屿,阻碍单晶形成.
实现非中心对称的二维单晶比像石墨烯这样的中心对称单晶要具有显著的挑战性.

研究的目的:

在过去十年中,审查在生长非中心对称2D单晶的进展和挑战.
讨论合成这些材料的精确化学过程中的战略和进步.
要突出关键的非中心对称的二维材料,包括六角化 (hBN) 和过渡金属二化 (TMD).

主要方法:

对2D材料合成的精确化学过程的审查.
分析克服基质诱导的对称性限制的策略.
专注于生产特定非中心对称2D材料的进步.

主要成果:

通过精确的化学方法,在过去十年中取得了重大进展.
代表性的非中心对称的2D单晶,如hBN和TMD,在它们的生产中取得了进步.
综述详细介绍了在综合过程中所面临的挑战和成功的策略.

结论:

精确的化学过程对于克服非中心对称二维材料的生长挑战至关重要.
未来的研究应该专注于层,堆叠和扭曲工程的非中心对称2D单晶及其异构结构的受控生长.
持续的进步为这些独特的材料带来了新的应用.

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