Design criteria for transparent single-wall carbon nanotube thin-film transistors.


A study based on two-dimensional percolation theory yielding quantitative parameters for optimum connectivity of transparent single-wall carbon nanotube (SWNT) thin films is reported. Optimum SWNT concentration in the filtrated solution was found to be 0.1 mg/L with a volume of 30 mL. Such parameters lead to SWNT fractions in the films of approximately Phi = 1.8 x 10(-3), much below the metallic percolation threshold, which is found to be approximately PhiC = 5.5 x 10(-3). Therefore, the performance of transparent carbon nanotube thin-film transistors is limited by the metallic SWNTs, even below their percolation threshold. We show how this effect is related to hopping or tunneling between neighboring metallic tubes.

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@article{Unalan2006DesignCF, title={Design criteria for transparent single-wall carbon nanotube thin-film transistors.}, author={Husnu Emrah Unalan and Giovanni Fanchini and Alokik Kanwal and Aurelien Du Pasquier and Manish Chhowalla}, journal={Nano letters}, year={2006}, volume={6 4}, pages={677-82} }