Rapid and scalable fabrication of reduced graphene oxide conducting films by ethanol-assisted thermal annealing of graphene oxide
Rapid and scalable fabrication of reduced graphene oxide conducting films by ethanol-assisted thermal annealing of graphene oxide
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DOI：
10.7567/1347-4065/ab0ff9
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发表时间：
2019-06
影响因子：
1.5
通讯作者：
K. Kanishka;H. De Silva;Hsin-Hui Huang;Seiya Suzuki;M. Yoshimura
中科院分区：
文献类型：
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作者：
K. Kanishka;H. De Silva;Hsin-Hui Huang;Seiya Suzuki;M. Yoshimura
通过氧化石墨烯（GO）的热退火制造基于石墨烯的透明导电膜正在考虑用于基于石墨烯的导电膜的商业化大规模生产，作为高成本的基于金属氧化物的导电基底的替代物。然而，常规的热退火具有一些缺点，例如高温退火沿着较长的处理时间和阻碍GO作为透明导体的适用性的结构损伤。本文报道了一种在低温（800 °C）条件下，以乙醇为碳源制备还原型GO基导电薄膜的方法。总处理时间小于1 h。结果证实，在乙醇气氛中的快速退火是一种有效的卷对卷方法，其降低了所使用的器件上的热负荷。同时发现乙醇在修复晶格缺陷中起着重要作用，从而在很大程度上降低了电阻。
Fabrication of graphene-based transparent conducting films via thermal annealing of graphene oxide (GO) is under consideration for commercial mass production of graphene-based conducting films as an alternative to high-cost metal oxide-based conducting substrates. Conventional thermal annealing, however, comes with some drawbacks, such as high-temperature annealing along with longer process times and structural damage that hinders the applicability of GO as a transparent conductor. Here we report on a method for fabricating reduced GO-based conducting films at a low temperature (800 °C) in the presence of ethanol as a carbon source to repair the lattice defects. The total process time is less than 1 h. The results confirm that rapid annealing in an ethanol atmosphere is an effective roll-to-roll method which reduces the thermal load on the device used. It is also found that ethanol plays an important role in repairing the lattice defects, thereby lowering the resistance to a great extent.