Effects of Surfactants on the Electronic Transport Properties of Thin-Film Transistors of Single-Wall Carbon Nanotubes

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• 作者：Maki Shimizu ; Shunjiro Fujii ; Takeshi Tanaka ; Hiromichi Kataura
• 刊名：The Journal of Physical Chemistry C
• 出版年：2013
• 出版时间：June 6, 2013
• 年：2013
• 卷：117
• 期：22
• 页码：11744-11749
• 全文大小：357K
• 年卷期：v.117,no.22(June 6, 2013)
• ISSN：1932-7455

文摘

We investigated the effects of surfactants on the morphologies and electronic transport properties of solution-processed thin films of semiconductor-enriched single-wall carbon nanotubes. The network morphologies were observed using atomic force microscopy, and the electronic transport properties of thin-film transistors composed of these materials were examined. The network morphologies were highly dependent on the surfactants, although the thin films were fabricated from the same nanotube using the same process. Among the four surfactants examined in this work, sodium deoxycholate produced the finest mesh structures that comprised mostly individual nanotubes. The performance of the thin-film transistor was highly correlated with the morphology of the nanotube network; however, no considerable effect of the residual surfactant was observed. Because of the fine mesh structure, both the highest on/off ratio (1 脳 10⁶) and the highest mobility (42 cm² V^鈥? s^鈥?) were obtained for the thin-film transistor produced from sodium deoxycholate.