Based on the understanding of thermodynamic and kinetics, we use the chemical vapor deposition approach, preparing wafer-sized graphene single crystals free of grain boundaries, impurities, and wrinkles. Super-clean graphene, twisted bilayer graphene, and nitrogen-cluster doped graphene have been achieved for diverse applications.Based on the understanding of thermodynamic and kinetics, we use the chemical vapor deposition approach, preparing wafer-sized graphene single crystals free of grain boundaries, impurities, and wrinkles. Super-clean graphene, twisted bilayer graphene, and nitrogen-cluster doped graphene have been achieved for diverse applications.Based on the understanding of thermodynamic and kinetics, we use the chemical vapor deposition approach, preparing wafer-sized graphene single crystals free of grain boundaries, impurities, and wrinkles. Super-clean graphene, twisted bilayer graphene, and nitrogen-cluster doped graphene have been achieved for diverse applications.Based on the understanding of thermodynamic and kinetics, we use the chemical vapor deposition approach, preparing wafer-sized graphene single crystals free of grain boundaries, impurities, and wrinkles. Super-clean graphene, twisted bilayer graphene, and nitrogen-cluster doped graphene have been achieved for diverse applications.

The applications of graphene films in electronics and photonics require the reliable transfer techniques for laying graphene films from growth substrates onto application-targeted substrates. We try to achieve the crack- and contamination-free transfer of two-dimensional materials for high-performance 2D material and heterostructure devices.

New and killer applications of graphene and other 2D materials are anticipated in our group., such as moisture-barrier films, optical communications, and sensors. Layer-by-layer transfer is used to fabricate clean van der Waals heterostructures, exhibiting unique physical and chemical performances.

Mechanical exfoliation of layered crystals would provide monolayer or thin flakes with new electronic, magnetic, and optical properties dissimilar with those of bulk one. Such method would provide the interesting 2D materials with best crystalline quality; therefore we are forcing on the synthesis of large crystals of new layered materials, including insulator, ferromagnetic and ferroelectric materials.

The weak van der Waals interaction between 2D layers enable the facile integration of layered materials for fabricating van der Waals heterostructure with novel electronic and optoelectronic properties. Based on the novel transfer techniques, we focus on the combination of insulator as well as ferromagnetic and ferroelectric materials for new-concept devices and circuits.