Kim Kang Lib, Koo Min, Park Cheolmin
Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea.
Nanoscale. 2020 Mar 5;12(9):5293-5307. doi: 10.1039/c9nr10911k.
The control of atomically thin two-dimensional (2D) crystal-based heterostructures wherein the interfaces of 2D nanomaterials are vertically stacked with other thin functional materials via van der Waals interactions is highly important for not only optimizing the excellent properties of 2D nanomaterials, but also for utilizing the functionality of the contact materials. In particular, when 2D nanomaterials are combined with soft polymeric components, the resulting photoelectronic devices are potentially scalable and mechanically flexible, allowing the development of a variety of prototype soft-electronic devices, such as solar cells, displays, photodetectors, and non-volatile memory devices. Diverse polymer/2D heterostructures are frequently employed, but the performance of the devices with heterostructures is limited, mainly because of the difficulty in controlling the molecular structures of the polymers on the 2D surface. Thus, understanding the crystal interactions of polymers on atomically flat and dangling-bond-free surfaces of 2D materials is essential for ensuring high performance. In this study, the recent progress made in the development of thin polymer films fabricated on the surfaces of various 2D nanomaterials for high-performance photoelectronic devices is comprehensively reviewed, with an emphasis on the control of the molecular and crystalline structures of the polymers on the 2D surface.
基于原子级薄的二维（2D）晶体的异质结构的控制非常重要，其中二维纳米材料的界面通过范德华相互作用与其他薄功能材料垂直堆叠，这不仅对于优化二维纳米材料的优异性能至关重要，而且对于利用接触材料的功能也很重要。特别是，当二维纳米材料与柔软的聚合物组件结合时，所得的光电器件具有潜在的可扩展性和机械柔韧性，从而能够开发各种原型软电子器件，如太阳能电池、显示器、光电探测器和非易失性存储器件。多种聚合物/二维异质结构经常被采用，但具有异质结构的器件性能有限，主要是因为难以控制二维表面上聚合物的分子结构。因此，了解聚合物在二维材料原子级平整且无悬空键的表面上的晶体相互作用对于确保高性能至关重要。在本研究中，全面综述了在各种二维纳米材料表面上制备用于高性能光电器件的聚合物薄膜的最新进展，重点是二维表面上聚合物的分子和晶体结构的控制。
