Transparent conducting antimony-doped tin oxide films containing functionalized multi-walled carbon nanotubes

✍ Scribed by Castro, M. R. S. ;Schmidt, H. K.

• Publisher: John Wiley and Sons
• Year: 2007
• Tongue: English
• Weight: 305 KB
• Volume: 204
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/pssa.200623157

✦ Synopsis

Abstract

In order to improve the conductivity of Sb:SnO~2~ (ATO) films, very thin multi‐walled carbon nanotubes (MWNTs) functionalized with –NH~2~ and –COOH groups have been investigated. The new nanocomposites were prepared by the addition of such MWNTs pre‐dispersed in a cationic surfactant (Hexadecyl‐trimethyl ammonium chloride) in the ATO sol at concentrations of 0.05 and 0.1 wt%. Coatings of pure ATO and nanocomposites were prepared by spin coating on borofloat glass substrates. Experiments show‐ ed that all coatings containing nanotubes present resistivities of the order of 10^–1^ to 10^–2^ Ω cm while pure ATO films prepared under the same conditions show resistivities which are about 16 times higher. Optical transmission in the visible range of all systems studied was about 90%. The results indicate the suitability of MWNTs as additives for enhancing electrical properties of transparent conductive coatings. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)