Highly conductive and transparent single-walled carbon nanotube thin films fabricated by gel coating
Highly conductive and transparent single-walled carbon nanotube thin films fabricated by gel coating
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DOI：
10.1039/c1jm12659h
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发表时间：
2011-11
影响因子：
--
通讯作者：
Xiaoguang Mei;Jianyong Ouyang
中科院分区：
文献类型：
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作者：
Xiaoguang Mei;Jianyong Ouyang
采用凝胶包覆法制备了透明导电单壁碳纳米管(SWCNT)薄膜。将大量的碳纳米管直接分散在聚氧乙烯(12)十三烷基醚等液体非离子表面活性剂中，通过机械研磨和超声作用形成凝胶。将凝胶包覆在玻璃基板上，然后通过加热去除表面活性剂，得到了SWCNT薄膜。在480~520℃温度范围内加热后，单壁碳纳米管薄膜变得非常薄而透明，具有良好的均匀性和较高的透过率-方阻比，这是由于单壁碳纳米管分散在凝胶中所致。得到了透过率为80%时方阻约为2 5 0Ω-−1的薄膜。这种薄膜可以很容易地从玻璃等刚性基板转移到聚对苯二甲酸乙二酯等柔性聚合物基板上。
Transparent and conductive single-walled carbon nanotube (SWCNT) films were fabricated through gel coating. A gel was formed by directly dispersing a large amount of SWCNTs in a liquid nonionic surfactant like polyoxyethylene (12) tridecyl ether without a solvent by mechanical grinding and subsequent ultrasonication. SWCNT films were obtained by coating the gels on glass substrates and subsequently removing the surfactant through heating. The SWCNT films became very thin and transparent after heating at a temperature between 480 and 520 °C. They exhibited good uniformity and a high transmittance-to-sheet resistance ratio which is attributed to the long SWCNTs dispersed in the gels. Films with a sheet resistance of around 250 Ω □−1 at 80% transmittance were obtained. The films can be easily transferred from rigid substrates like glass to flexible polymer substrates like polyethylene terephthalate.