H. M. Tohati, A. Pekker, K. Kamaras
We report wide-range optical investigations on transparent conducting networks made from separated (semiconducting, metallic) and reference (mixed) single-walled carbon nanotubes, complemented by transport measurements, focusing on the problem how transparency and conductivity can be improved at the same time. We find that HNO3 doping offers a larger improvement in transparent conductive quality than separation. Spontaneous dedoping occurs in all samples but is most effective in films made of doped metallic tubes, where the sheet conductance returns close to its original value within 24 hours.
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http://arxiv.org/abs/1302.3343
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