报告题目： 2D Materials, Heterostructures and Devices: Opportunities and Challenges

报 告 人：Xiangfeng Duan

报告时间：2017年3月16日10：30

报告地点：郑裕彤讲堂

报告摘要：Two-dimensional layered materials (2DLMs), such as graphene or molybdenum disulfide, represent an ideal 2D material system for exploring fundamental chemistry and physics at the limit of single atomic thickness. The covalently bonded atomic layers in 2DLMs are bound weakly to each other through van der Waals interactions, which offers considerable flexibility to isolate, mix and match individual atomic layers without the constraints of lattice and processing compatibility. It can therefore open up vast possibilities for nearly arbitrarily combining multiple materials and integrating distinct properties at the atomic scale, and thus enabling entirely new opportunities beyond the reach of existing materials. Here I will focus my discussion on exploring these 2D materials and their heterostructures a new platforms for the creation of a wide of electronic and optoelectronic devices with unique functions or unprecedented performance. Examples discussed include: high-speed transistors; a new design of vertical transistors for ultra-flexible electronics; and a series of of tunable photonic devices. I will conclude with a brief summary of the current status and future challenges in 2D materials and devices.