Thermal Conversion of Electronic and Electrical Properties of AuCl3-Doped Single-Walled Carbon Nanotubes

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• 作者：Seon-Mi Yoon ; Un Jeong Kim ; Anass Benayad ; Il Ha Lee ; Hyungbin Son ; Hyeon-Jin Shin ; Won Mook Choi ; Young Hee Lee ; Yong Wan Jin ; Eun-Hong Lee ; Sang Yoon Lee ; Jae-Young Choi ; Jong Min Kim
• 刊名：ACS Nano
• 出版年：2011
• 出版时间：February 22, 2011
• 年：2011
• 卷：5
• 期：2
• 页码：1353-1359
• 全文大小：941K
• 年卷期：0
• ISSN：1936-086X

文摘

By using carbon-free inorganic atomic layer involving heat treatment from 150 to 300 °C, environmentally stable and permanent modulation of the electronic and electrical properties of single-walled carbon nanotubes (SWCNTs) from p-type to ambi-polar and possibly to n-type has been demonstrated. At low heat treatment temperature, a strong p-doping effect from Au³⁺ ions to CNTs due to a large difference in reduction potential between them is dominant. However at higher temperature, the gold species are thermally reduced, and thermally induced CNT−Cl finally occurs by the decomposition reaction of AuCl₃. Thus, in the AuCl₃-doped SWCNTs treated at higher temperature, the p-type doping effect is suppressed and an n-type property from CNT−Cl is thermally induced. Thermal conversion of the majority carrier type of AuCl₃-doped SWNTs is systematically investigated by combining various optical and electrical tools.