‡Department of Mechanical Engineering, Columbia University, New York, New York 10027, United States.
§SKKU Advanced Institute of Nanotechnology, Sungkyunkwan University, Suwon 440-746, Republic of Korea.
Nano Lett. 2015 May 13;15(5):3236-40. doi: 10.1021/acs.nanolett.5b00440. Epub 2015 Apr 16.
We report an ultraclean, cost-effective, and easily scalable method of transferring and patterning large-area graphene using pressure sensitive adhesive films (PSAFs) at room temperature. This simple transfer is enabled by the difference in wettability and adhesion energy of graphene with respect to PSAF and a target substrate. The PSAF-transferred graphene is found to be free from residues and shows excellent charge carrier mobility as high as ∼17,700 cm(2)/V·s with less doping compared to the graphene transferred by thermal release tape (TRT) or poly(methyl methacrylate) (PMMA) as well as good uniformity over large areas. In addition, the sheet resistance of graphene transferred by recycled PSAF does not change considerably up to 4 times, which would be advantageous for more cost-effective and environmentally friendly production of large-area graphene films for practical applications.
我们报告了一种超清洁、经济高效且易于扩展的方法，可在室温下使用压敏胶膜 (PSAF) 转移和图案化大面积石墨烯。这种简单的转移是通过石墨烯与 PSAF 和目标衬底的润湿性和粘附能的差异实现的。与通过热释放胶带 (TRT) 或聚甲基丙烯酸甲酯 (PMMA) 转移的石墨烯相比，PSAF 转移的石墨烯无残留物，并且表现出优异的载流子迁移率，高达约 17700 cm²/V·s，掺杂较少，并且在大面积上具有良好的均匀性。此外，通过回收 PSAF 转移的石墨烯的片电阻在多达 4 次的循环中没有明显变化，这有利于更经济高效和环保的生产，以用于实际应用的大面积石墨烯薄膜。
