@article{Dong2025, 
author = {Yanyan Dong and Buhang Chen and Chengjin Wu and Yajing Chen and Anbang Zhu and Qin Li and Pengbo Bian and Xiaofeng Song and Lida Jia and Sicong Zheng and Qiming Cai and Puyan Li and Xiuju Song and Junqiang Wang and Mengwei Li and Luzhao Sun and Zhongfan Liu},
title = {Roll-to-roll chemical vapor deposition growth of fractional-layer graphene films by regulating growth modes},
year = {2025},
journal = {Nano Research},
volume = {18},
number = {8},
pages = {94907558},
keywords = {graphene, chemical vapor deposition, growth mode, roll-to-roll preparation, electrothermal films},
url = {https://www.sciopen.com/article/10.26599/NR.2025.94907558},
doi = {10.26599/NR.2025.94907558},
abstract = {Multilayer graphene films demonstrate superior electrical and thermal conductivity, mechanical properties, and barrier performance compared to monolayer, thereby exhibiting greater potential for industrial applications. However, the synthesis of multilayer graphene films continues to face critical challenges, primarily including uncontrollable layer numbers, incomplete understanding of growth mechanisms, and poor reproducibility and scalability in mass production. This study introduces the “fractional layer” concept and corresponding mathematical model to precisely quantify graphene layers for the first time. Using this metric, we systematically established growth principles and process windows for layer-controlled graphene synthesis on copper substrates and elucidated the multilayer growth mechanism governed by modulating the lateral growth and vertical growth kinetics. Based on this theoretical framework, the continuous preparation of 2.3-layer graphene films was achieved via industrial scale roll-to-roll chemical vapor deposition equipment, exhibiting exceptional macroscopic uniformity and demonstrating significant potential for applications in transparent, flexible electrothermal heaters. Our work will establish a solid material foundation for the industrial application of multilayer graphene films and offer novel insights into the layer-controlled synthesis of other two-dimensional materials.}
}