The single-crystal graphene film growth platform is mainly devoted to the batch production of single-crystal graphene. Taking industrial copper foil as the raw material, single-crystal copper was fabricated via annealing treatment. On this single-crystal copper substrate, single-crystal graphene films were further prepared through epitaxial growth, wherein ultrafast graphene growth technology and seamless stitching technology were employed. It is engineered to tackle crucial challenges, including increasing the size of the grown single-crystal graphene, decreasing the defect density, and improving the efficiency of batch fabrication.

Platform Level & Positioning

The platform currently enables the batch production of 15 cm * 15 cm single‑crystal graphene films, positioning it at the international forefront of the field. The mass production of largesize, highquality singlecrystal graphene films can continuously provide highquality raw materials for fields such as flexible electronics, optoelectronic devices, quantum information, and transparent conductive films, thereby accelerating the application of graphene films in downstream technological sectors.

Representative Achievements

（1）The platform team and its collaborators proposed a “variation and heredity” growth mechanism for crystal surface and interface control, enabling the world’s first fabrication of the most comprehensive and largest library of single-crystal copper foils with high-index facets. The related work, titled “Seeded growth of large single-crystal copper foils with high-index facets,” was published in Nature.

（2）The platform team and its collaborators proposed a new growth mechanism called “isothermal dissolution–diffusion–precipitation.” The team overcame the weak interlayer coupling in thick van der Waals materials. This allowed the fabrication of centimeter-scale, high-quality single-crystal graphite with up to 100,000 layers. The related work, titled “Continuous epitaxy of single-crystal graphite films by isothermal carbon diffusion through nickel,” was published in Nature Nanotechnology.