围绕二维晶体生长的基础科学问题,开展二维材料的化学气相沉积(CVD)生长方法与热动力学研究。主要聚焦石墨烯、半金属(窄带隙)、拓扑绝缘体、磁性等二维量子材料及其异质(扭转)结构的生长原理和规模化制备,以及相关器件的新奇量子物态调控研究。
前期工作中,发展了基于非金属模板的直接CVD法,实现了石墨烯单晶、石墨烯跨尺度宏观结构的制备,探索了晶圆级双层扭转石墨烯以及MoTe2、ZrTe2、Bi2Se3等二维量子材料体系的制备策略。

代表性论文:
[1] Growing three-dimensional biomorphic graphene powders using naturally abundant diatomite templates towards high solution processability. Nature Communications 2016, 7, 13440.
[2] Superstable copper nanowire network electrodes by single-crystal graphene covering and their applications in flexible nanogenerator and light-emitting diode. Nano Energy 2020, 71, 104638.
实现了空气稳定、近室温及以上居里温度的铁磁性单晶Cr7Te8、Cu-Cr7Te8、Cu-CrSe及磁性异质结Cr7Te8/MnTe等材料的可控制备,构筑了霍尔器件、场效应晶体管器件、自旋阀器件以及栅压可调的异质结器件,探究了相关器件在自旋电子学方面的量子物态调控。

代表性论文:
[1] Controlled synthesis of 2D ferromagnetic/antiferromagnetic Cr7Te8/MnTe vertical heterostructures for high-tunable coercivity. ACS Nano 2024, 18, 23508-23517.
[2] Above-room-temperature ferromagnetism in copper-doped two-dimensional chromium-based nanosheets. ACS Nano 2024, 18, 703-712.
[3] Gate-tunable Berry curvature in van der Waals itinerant ferromagnetic Cr7Te8. InfoMat 2024, 6, e12524.