以石墨烯为代表的二维材料，由于具有不同于其块体材料的特殊力、热、光、电、磁等物理性能，在多个学科领域掀起了研究热潮。本研究将了解这些前沿课题。二维材料异质结是由石墨烯,六方氮化硼,过渡金属二硫族化合物,黑磷等二维材料通过面内拼接或层间堆叠形成的,并由此可分为二维材料面内异质结和垂直异质结.二维材料面内异质结可以实现区域内载流子的特殊传输行为;而垂直异质结中的层间量子耦合效应能够导致新颖的物理特性,通过调节异质结构界面可调制器件的电学及光学性能.目前,随着电子器件,光电器件等对集成性,功能性的要求不断提高,二维材料异质结越来越多地受到研究者的关注,实现二维材料异质结结构(包括界面)的有效调控是构筑高性能,高集成器件的前提。科研人员认为，这种以双金属叠片为基体的CVD方法具有很好的普适性和可控性，可以用于制备其他二维过渡族金属碳化物。这类高质量二维过渡族金属碳化物晶体为二维材料家族增添了新成员，不仅为研究其本征物性以及与现有二维材料不同的新物性和新应用提供了可能，而且可用于与其他二维晶体材料一起构筑新型叠层异质结构，拓展了二维材料的物性和应用空间。据了解，科学家制备出了功能化的过渡族金属碳化物纳米片。然而，这种方法制得的功能化的二维过渡族金属碳化物纳米片的片层尺寸小，并且存在大量的缺陷和官能团，限制了对二维过渡族金属碳化物基本物性的研究和应用探索。
Two-dimensional materials, represented by graphene, have set off a research boom in many disciplines due to their special physical properties, such as force, heat, light, electricity and magnetism, which are different from their bulk materials. This study will understand these frontier topics. Two-dimensional material heterojunctions are formed by in-plane splicing or interlayer stacking of two-dimensional materials such as graphene, hexagonal boron nitride, transition metal disulfide compounds and black phosphorus, which can be divided into two-dimensional material in-plane heterojunctions and vertical heterojunctions. The special transport behavior of carriers in 2D materials can be realized by in-plane heterojunctions. However, the interlayer quantum coupling effect in vertical heterojunctions can lead to novel physical properties by adjusting the electrical and optical properties of the interfacial modulator. At present, with the continuous improvement of integration and functionality requirements of electronic devices and optoelectronic devices, two-dimensional material heterojunction has attracted more and more attention of researchers. The effective regulation of two-dimensional material heterojunction structure (including interface) is the premise of building high-performance and highly integrated devices.
Researchers believe that the CVD method based on bimetallic laminates has good universality and controllability, and can be used to prepare other 2D transition metal carbides. This kind of high quality metal carbide crystal 2 d transition for two-dimensional material added a new member of the family, not only for the study of its intrinsic properties as well as with the existing two-dimensional materials of various new properties and new application provides possible, and with other two-dimen
sional crystal materials can be used to construct new laminated heterogeneous structure, expand the two-dimensional material physical properties and application of the space. Scientists have prepared functionalized transition metal carbide nanosheets. However, the functional 2D transition metal carbide nanosheets obtained by this method have small lamellae size and a large number of defects and functional groups, which limit the study and application of the basic physical properties of 2D transition metal carbide.