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

2006-04-01
Ünalan, Hüsnü Emrah
Kanwal, A
Du Pasquier, A
Chhowalla, M
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 similar to Phi(c) = 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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Citation Formats
H. E. Ünalan, A. Kanwal, A. Du Pasquier, and M. Chhowalla, “Design criteria for transparent single-wall carbon nanotube thin-film transistors,” NANO LETTERS, pp. 677–682, 2006, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/47224.