Kang Kyeong Tae, Park Jeongmin, Suh Dongseok, Choi Woo Seok
Department of Physics, Sungkyunkwan University, Suwon, 16419, Korea.
Department of Energy Sciences, Sungkyunkwan University, Suwon, 16419, Korea.
Adv Mater. 2019 Aug;31(34):e1803732. doi: 10.1002/adma.201803732. Epub 2018 Dec 27.
The marriage between a 2D layered material (2DLM) and a complex transition metal oxide (TMO) results in a variety of physical and chemical phenomena that cannot be achieved in either material alone. Interesting recent discoveries in systems such as graphene/SrTiO , graphene/LaAlO /SrTiO , graphene/ferroelectric oxide, MoS /SrTiO , and FeSe/SrTiO heterostructures include voltage scaling in field-effect transistors, charge state coupling across an interface, quantum conductance probing of the electrochemical activity, novel memory functions based on charge traps, and greatly enhanced superconductivity. In this context, various properties and functionalities appearing in numerous different 2DLM/TMO heterostructure systems are reviewed. The results imply that the multidimensional heterostructure approach based on the disparate material systems leads to an entirely new platform for the study of condensed matter physics and materials science. The heterostructures are also highly relevant technologically as each constituent material is a promising candidate for next-generation optoelectronic devices.
二维层状材料（2DLM）与复杂过渡金属氧化物（TMO）的结合产生了多种单独一种材料无法实现的物理和化学现象。近期在诸如石墨烯/ SrTiO、石墨烯/ LaAlO / SrTiO、石墨烯/铁电氧化物、MoS / SrTiO以及FeSe / SrTiO异质结构等体系中的有趣发现包括场效应晶体管中的电压缩放、界面处的电荷态耦合、电化学活性的量子电导探测、基于电荷陷阱的新型存储功能以及大幅增强的超导性。在此背景下，本文综述了众多不同的2DLM/TMO异质结构体系中出现的各种性质和功能。结果表明，基于不同材料体系的多维异质结构方法为凝聚态物理和材料科学研究带来了全新的平台。这些异质结构在技术上也具有高度相关性，因为每种组成材料都是下一代光电器件的有前景的候选材料。
