Chemically exfoliated inorganic nanosheets for nanoelectronics
Chemically exfoliated inorganic nanosheets for nanoelectronics
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DOI：
10.1063/5.0083109
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发表时间：
2022-06
影响因子：
15
通讯作者：
T. Taniguchi;L. Nurdiwijayanto;R. Ma;T. Sasaki
中科院分区：
文献类型：
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作者：
T. Taniguchi;L. Nurdiwijayanto;R. Ma;T. Sasaki
二维纳米材料是本世纪材料科学与工程领域最先进的研究方向之一。在各种合成二维纳米材料的方法中，包括自上而下的剥落和自下而上的晶体生长，化学剥落已被广泛用于生产各种层状化合物的单层，如粘土矿物、过渡金属硫族化合物（TMDCs）和氧化物，早在石墨烯的发现之前。软化学剥落是一种通过对层间通道进行化学修饰来减弱层状化合物中层间相互作用，从而促进单层剥落的技术。二十年来，使用有机物质（通常是胺）的化学剥离工艺已应用于一系列层状金属氧化物和氢氧化物，在其高结晶单层中建立了高产量的剥离工艺，并开发了胶体整合工艺，将所得二维纳米材料组装成组织良好的纳米级器件。最近，这种策略被发现对TMDC和MXene纳米片有效，扩展了溶液处理二维纳米材料器件的功能阵容，从电介质、光学、磁性和半导体到超导体。本文综述了氧化物、TMDC和MXene纳米片在软化学剥离、胶体整合、薄膜应用等方面的研究历史、最新进展及发展前景。
Two-dimensional (2D) nanomaterials constitute one of the most advanced research targets in materials science and engineering in this century. Among various methods for the synthesis of 2D nanomaterials, including top-down exfoliation and bottom-up crystal growth, chemical exfoliation has been widely used to yield monolayers of various layered compounds, such as clay minerals, transition metal chalcogenides (TMDCs), and oxides, long before the discovery of graphene. Soft chemical exfoliation is a technique to weaken the layer-to-layer interaction in layered compounds by chemical modification of interlayer galleries, which promotes monolayer exfoliation. The chemical exfoliation process using organic substances, typically amines, has been applied to a range of layered metal oxides and hydroxides for two decades, establishing high-yield exfoliation into their highly crystalline monolayers and colloidal integration processes have been developed to assemble the resultant 2D nanomaterials into well-organized nanoscale devices. Recently, such a strategy was found to be effective for TMDC and MXene nanosheets, expanding the lineup of functionalities of solution-processed 2D nanomaterial devices from dielectrics, optics, magnetics, and semiconductors to superconductors. Throughout this review, we share the historical research flow, recent progress, and prospects in the development of soft-chemical exfoliation, colloidal integration, and thin film applications of oxides, TMDC, and MXene nanosheets.