Liu Can, Wang Li, Qi Jiajie, Liu Kaihui
State Key Lab for Mesoscopic Physics, Frontiers Science Center for Nano-Optoelectronics, School of Physics, Peking University, Beijing, 100871, China.
Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China.
Adv Mater. 2020 May;32(19):e2000046. doi: 10.1002/adma.202000046. Epub 2020 Mar 20.
In the "post-Moore's Law" era, new materials are highly expected to bring next revolutionary technologies in electronics and optoelectronics, wherein 2D materials are considered as very promising candidates beyond bulk materials due to their superiorities of atomic thickness, excellent properties, full components, and the compatibility with the processing technologies of traditional complementary metal-oxide semiconductors, enabling great potential in fabrication of logic, storage, optoelectronic, and photonic 2D devices with better performances than state-of-the-art ones. Toward the massive applications of highly integrated 2D devices, large-size 2D single crystals are a prerequisite for the ultimate quality of materials and extreme uniformity of properties. However, at present, it is still very challenging to grow all 2D single crystals into the wafer scale. Therefore, a systematic understanding for controlled growth of various 2D single crystals needs to be further established. Here, four key aspects are reviewed, i.e., nucleation control, growth promotion, surface engineering, and phase control, which are expected to be controllable at different periods during the growth. In addition, the perspectives on designed growth and potential applications are discussed for showing the bright future of these advanced material systems of 2D single crystals.
在“后摩尔定律”时代，人们高度期望新材料能在电子和光电子领域带来下一次革命性技术，其中二维材料因其原子厚度优势、优异性能、完整组件以及与传统互补金属氧化物半导体加工技术的兼容性，被视为超越块体材料的极具潜力的候选材料，这使其在制造逻辑、存储、光电子和光子二维器件方面具有巨大潜力，有望制造出性能优于现有技术的器件。对于高度集成二维器件的大规模应用而言，大尺寸二维单晶是实现材料最终质量和性能极端均匀性的前提条件。然而，目前将所有二维单晶生长到晶圆尺寸仍然极具挑战性。因此，需要进一步系统地了解各种二维单晶的可控生长。在此，本文综述了四个关键方面，即成核控制、生长促进、表面工程和相控制，期望在生长的不同阶段对其进行控制。此外，还讨论了设计生长和潜在应用的前景，以展现这些二维单晶先进材料系统的光明未来。
