Percolation in transparent and conducting carbon nanotube networks
Percolation in transparent and conducting carbon nanotube networks
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DOI：
10.1021/nl048435y
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发表时间：
2004-12-01
期刊：
影响因子：
10.8
通讯作者：
Gr端ner, G
中科院分区：
文献类型：
--
作者：
Hu, L;Hecht, DS;Gr端ner, G
采用真空过滤法在室温下制备了不同密度的超薄、均匀的单壁碳纳米管网络。作为纳米管网络密度的函数的片电导的测量显示2D渗流行为。此外，在可见光谱范围内的网络透明度进行了检查，结果与标准薄膜模型一致：符合标准理论表明，在550 nm处的透射率测量结果为sigma（ac）= sigma（dc）。透射测量也表明纳米管网络膜作为透明导电涂层的有用性。的网络电导的改善途径进行了讨论。
Ultrathin, uniform single-walled carbon nanotube networks of varying densities have been fabricated at room temperature by a vacuum filtration method. Measurements of the sheet conductance as a function of nanotube network density show 2D percolation behavior. In addition, the network transparency in the visible spectral range was examined and the results are in agreement with a standard thin-film model: fits to the standard theory indicate sigma(ac) = sigma(dc) for transmission measurements at 550 nm. Transmission measurements also indicate the usefulness of nanotube network films as a transparent, conductive coating. Avenues for improvement of the network conductance are discussed.