Nano Archive

Doping and de-doping of carbon nanotube transparent conducting films by dispersant and chemical treatment

Geng, Hong-Zhang and Kim, Ki Kang and Song, Chulho and Xuyen, Nguyen Thi and Kim, Soo Min and Park, Kyung Ah and Lee, Dae Sik and An, Kay Hyeok and Lee, Young Sil and Chang, Youngkyu and Lee, Young Jun and Choi, Jae Young and Benayad, Anass and Lee, Young Hee (2008) Doping and de-doping of carbon nanotube transparent conducting films by dispersant and chemical treatment. JOURNAL OF MATERIALS CHEMISTRY, 18 (11). pp. 1261-1266.

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Official URL: http://www.rsc.org/Publishing/Journals/JM/article....

Abstract

Single-walled carbon nanotubes (SWCNTs) dispersed with Nafion in a solvent mixture containing de-ionized water and 1-propanol (bisolvent) were sprayed on a poly(ethylene terephthalate) substrate to fabricate flexible transparent conducting films (TCFs). Different SWCNT-to-Nafion ratios were used to optimize the film performance of transparence and sheet resistance. The TCFs were then immersed in nitric acid. These steps resulted in p-type doping due to the presence of Nafion in the SWCNT network and de-doping (removal of doping effect) by the acid treatment. X-Ray photoelectron and Raman spectroscopy confirmed that the de-doping effect occurred with the partial removal of Nafion from the nanotube surface by the nitric acid treatment, which improved the film conductivity by a factor of similar to 4 with negligible change in transmittance.

Item Type:Article
Subjects:Material Science > Functional and hybrid materials
Physical Science > Nano objects
Physical Science > Nanoelectronics
ID Code:559
Deposited By:IoN
Deposited On:20 Jan 2009 14:29
Last Modified:29 Jan 2009 15:22

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