Edge-feeding synchronous epitaxy of layer-controlled graphene films on heterogeneous catalytic substrates

作者：Buhang Chen, Xiongzhi Zeng, Zhetong Liu, Zhetong Liu, Wenlong Dong, Ding Pei, Huan Wang, Yanyan Dong, Chengjin Wu, Xiaoyin Gao, Han Gao, Han Gao, Hang Jia, Aiheng Yuan, Jinlong Du, Heng Chen, Haiyang Liu, Congwei Tan, Jianbo Yin, Luqi Liu, Zhongkai Liu, Luqi Liu, Peng Gao, Kostya S. Novoselov, Hailin Peng, Zhongfan Liu, Luzhao Sun, Zhongfan Liu, Zhongfan Liu · 发表于：Nature Communications · 年份：2025 · DOI：10.1038/s41467-025-60323-1 · 被引用次数：10 · 研究领域：Graphene research and applications、2D Materials and Applications、Semiconductor materials and devices

Compared with single-layer two-dimensional (2D) materials, bilayer, trilayer, and few-layer 2D materials exhibit enhanced band structure tunability, improved electrical and thermal properties, and superior mechanical strength and barrier performance. However, the layer-controlled synthesis of 2D films with high layer number uniformity remains challenging, due to the difficulty in the additional layer nucleation and the effective realization of layer-by-layer growth. Herein, we report an edge-feeding synchronous epitaxial growth mode breaking the limit of traditional epitaxy theories. An efficient heterogeneous Cu–Cu2O catalyst is demonstrated, where graphene edge-surrounding Cu2O is crucial in precursor dissociation, atomic carbon diffusion, and edge energy reduction. The synchronous growth method can be generalized to the layer-controlled synthesis of 2–7-layer graphene films. Relying on this growth strategy, we successfully achieved the industrial-scale production of homogeneous A3-sized ABA-trilayer graphene films (42 × 30 square centimeters) with good mechanical properties and peeling-transferring intactness. Our method offers a robust strategy for the layer-controlled synthesis of 2D material films. Few-layer-thick 2D materials offer desirable electronic, thermal and mechanical properties, but their large-scale layer-controlled synthesis is still challenging. Here, the authors report an edge-feeding synchronous epitaxial growth method to synthesize homogeneous A3-sized g...