Short-channel field-effect transistors (FETs) prepared from semiconducting single-walled carbon nanotube (s-SWNT) dispersions sorted with poly(2,5-dimethylidynenitrilo-3,4-didodecylthienylene) are demonstrated. Electrical analysis of the FETs shows no evidence of metallic tubes out of a total number of 646 SWNTs tested, implying an estimated purity of our semiconducting SWNT solution higher than 99.85%. These findings confirm the effectiveness of the polymer-wrapping technique in selecting semiconducting SWNTs, as well as the potential of sorted nanotubes for the fabrication of short channel FETs comprising from 1 to up to 15 nanotubes without inter-nanotube junctions.

中文翻译：

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按聚合物包裹分类的半导体单壁碳纳米管：它们的纯度如何？

展示了由半导体单壁碳纳米管 (s-SWNT) 分散体与聚 (2,5-二甲基亚炔腈-3,4-didodecylthienylene) 分选而成的短通道场效应晶体管 (FET)。FET 的电气分析显示，在测试的 646 个单壁碳纳米管总数中没有金属管的迹象，这意味着我们的半导体单壁碳纳米管溶液的估计纯度高于 99.85%。这些发现证实了聚合物包裹技术在选择半导体 SWNT 方面的有效性，以及分选的纳米管在制造短沟道 FET 方面的潜力，该 FET 包括 1 到多达 15 个没有纳米管间结的纳米管。