Continuous and Scalable Fabrication of Transparent Conducting Carbon Nanotube Films
Continuous and Scalable Fabrication of Transparent Conducting Carbon Nanotube Films
复制标题
DOI：
10.1021/nn8008307
复制
发表时间：
2009-04-01
期刊：
影响因子：
17.1
通讯作者：
Pasquali, Matteo
中科院分区：
文献类型：
--
作者：
Dan, Budhadipta;Irvin, Glen C.;Pasquali, Matteo
我们报道了一种工业上可扩展的、快速、简单的工艺，用于大规模制备单壁碳纳米管(SWNT)的光学透明和导电薄膜。在表面活性剂的帮助下，将纯净的HIPCO单壁碳纳米管高浓度分散在水中，棒状包覆成均匀的薄膜，并在不同的酸中掺杂。我们展示了如何将不同的表面活性剂组合在一起，以获得高浓度的单壁碳纳米管的均匀分散，并为涂层和干燥提供最佳的流变性，包括防止早期尝试中的脱湿和薄膜破裂。用发烟硫酸掺杂得到了性能最好的薄膜(方阻分别为100和300欧姆/平方英尺，透明度分别为70%和90%)。我们使用品质因数(FOM)图对不同方法制备的碳纳米管薄膜的性能和微结构进行即时评估和比较。进一步的科学工程将为碳纳米管薄膜的商业应用铺平道路。
We report an industrially scalable, fast, and simple process for the large scale fabrication of optically transparent and electrically conducting thin films of single-walled carbon nanotubes (SWNT). Purified, pristine HiPco SWNTs were dispersed in water at high concentrations with the help of surfactants, rod-coated into uniform thin films, and doped by various acids. We show how to combine different surfactants to make uniform dispersions with high concentration of SWNTs and optimal rheological behavior for coating and drying, including preventing dewetting and film rupture that has plagued earlier attempts. Doping by fuming sulfuric acid yielded the films with best performance (sheet resistance of 100 and 300 Omega/sq for respective transparency of 70% and 90%). We use a figure of merit (FOM) plot for an immediate evaluation and comparison of the performance and microstructure of CNT films produced by different methods. Further scientific engineering will pave the way to the deployment of CNT films in commercial applications.