Fabrication of Highly Conductive and Transparent Thin Films from Single-Walled Carbon Nanotubes Using a New Non-ionic Surfactant via Spin Coating

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• 作者：Jea Woong Jo ; Jae Woong Jung ; Jea Uk Lee ; Won Ho Jo
• 刊名：ACS Nano
• 出版年：2010
• 出版时间：September 28, 2010
• 年：2010
• 卷：4
• 期：9
• 页码：5382-5388
• 全文大小：450K
• 年卷期：0
• ISSN：1936-086X

文摘

Oligothiophene-terminated poly(ethylene glycol) was synthesized and used as a non-ionic and amphiphilic surfactant for fabricating high-quality single-walled carbon nanotube (SWCNT) films by a simple spin coating method. The absence of charge repulsion between SWCNT/surfactant complexes successfully leads to formation of a dense network of SWCNTs on the substrate through a single deposition of spin coating. When the SWCNT film was treated with nitric acid and thionyl chloride after washed with dichloromethane and water, a high-performance SWCNT film with the sheet resistance of 59 ohm/sq and the transparency of 71% at 550 nm was successfully obtained. Since the SWCNT film exhibits a high value of σ_dc/σ_ac (∼17) and excellent dimensional stability after releasing from the substrate, the film can be used as a transparent electrode in flexible optoelectronic devices.