SCIENCE ADVANCES | RESEARCH ARTICLE APPLIED SCIENCES AND ENGINEERING
Ultra-smooth glassy graphene thin films for flexible transparent circuits Xiao Dai,1* Jiang Wu,2* Zhicheng Qian,3* Haiyan Wang,4† Jie Jian,4 Yingjie Cao,1 Mark H. Rummeli,1,5 Qinghua Yi,1 Huiyun Liu,2 Guifu Zou1†
2016 © The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).
Large-area graphene thin films are prized in flexible and transparent devices. We report on a type of glassy graphene that is in an intermediate state between glassy carbon and graphene and that has high crystallinity but curly lattice planes. A polymer-assisted approach is introduced to grow an ultra-smooth (roughness,