Optical, Structural and Electrical Investigations of TiO2/Multi-Walled Carbon Nanotube Composites
| Autor: | M. R. S. Castro, H. K. Schmidt, Peter William de Oliveira |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Spin coating
Nanocomposite Materials science Carbon nanotube actuators Biomedical Engineering Sintering Bioengineering General Chemistry Carbon nanotube Condensed Matter Physics law.invention Carbon nanotube metal matrix composites Optical properties of carbon nanotubes law General Materials Science Composite material Sheet resistance |
| Zdroj: | Journal of Nanoscience and Nanotechnology. 9:4016-4021 |
| ISSN: | 1533-4880 |
| DOI: | 10.1166/jnn.2009.m04 |
| Popis: | Nanocomposites of TiO2 and multi-walled carbon nanotubes (MWNTs) were produced by the addition of different concentrations of MWNTs to a TiO2 sol matrix. Conductive coatings were prepared by spin coating the nanocomposite sols on glass substrates and sintering the samples at 300 degrees C for 15 min. No crystalline phase of TiO2 was formed at this temperature. The sheet resistance of the coatings was decreased from some hundreds of Momega/sq to just a few komega/sq by the addition of MWNTs to the TiO2 matrix. Moreover, sintering of the coatings in a reducing atmosphere has lead to a lower sheet resistance than that presented by coatings sintered in air. The lowest resistivity of 2.0 x 10(-1) omega x cm was obtained by coatings prepared with 5.0 mg/ml MWNTs in the composite sol. The optical, structural and electrical properties of the coatings were correlated and demonstrated. |
| Databáze: | OpenAIRE |
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