Cho Kyungjune, Pak Jinsu, Chung Seungjun, Lee Takhee
Department of Physics and Astronomy and Institute of Applied Physics , Seoul National University , Seoul 08826 , Korea.
Photo-electronic Hybrids Research Center , Korea Institute of Science and Technology (KIST) , Seoul 02792 , Korea.
ACS Nano. 2019 Sep 24;13(9):9713-9734. doi: 10.1021/acsnano.9b02540. Epub 2019 Aug 1.
The interface engineering of two-dimensional (2D) transition-metal dichalcogenides (TMDs) has been regarded as a promising strategy to modulate their outstanding electrical and optoelectronic properties because of their inherent 2D nature and large surface-to-volume ratio. In particular, introducing organic molecules and polymers directly onto the surface of TMDs has been explored to passivate the surface defects or achieve better interfacial properties with neighboring surfaces efficiently, thus leading to great opportunities for the realization of high-performance TMD-based applications. This review provides recent progress in the interface engineering of TMDs with organic molecules and polymers corresponding to the modulation of their electrical and optoelectronic characteristics. Depending on the interfaces between the surface of TMDs and dielectric, conductive contacts or the ambient environment, we present various strategies to introduce an organic interlayer from materials to processing. In addition, the role of native defects on the surface of TMDs, such as adatoms or vacancies, in determining their electrical characteristics is also discussed in detail. Finally, the future challenges and opportunities associated with the interface engineering are highlighted.
二维（2D）过渡金属二硫属化物（TMD）的界面工程因其固有的二维特性和大的表面积与体积比，被视为一种调节其优异电学和光电特性的有前景的策略。特别是，人们已探索将有机分子和聚合物直接引入TMD表面，以钝化表面缺陷或有效实现与相邻表面更好的界面特性，从而为实现基于TMD的高性能应用带来了巨大机遇。本综述介绍了TMD与有机分子和聚合物的界面工程在调节其电学和光电特性方面的最新进展。根据TMD表面与电介质、导电接触或周围环境之间的界面，我们提出了从材料到加工引入有机夹层的各种策略。此外，还详细讨论了TMD表面的固有缺陷（如吸附原子或空位）在决定其电学特性方面的作用。最后，强调了与界面工程相关的未来挑战和机遇。
