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

被引：146
作者：
Unalan, HE [1 ]
Fanchini, G [1 ]
Kanwal, A [1 ]
Du Pasquier, A [1 ]
Chhowalla, M [1 ]
机构：
[1] Rutgers State Univ, Piscataway, NJ 08854 USA
来源：
NANO LETTERS | 2006年 / 6卷 / 04期
关键词：
D O I：
10.1021/NL052406l
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
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.
引用
收藏
页码：677 / 682
页数：6
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