Organic-inorganic nano-composites for device applications
Recently, there has been considerable interest in the organic electronic materials and their uses in the production of flexible and transparent electronic devices. However, the performance of these devices is less in comparison with those made from conventional inorganic materials.
Therefore, many researchers turned to produce organic-inorganic composites in order to combine the advantages of organic materials such as flexibility and ease of processability and at the same time the advantages of inorganic materials as well.
One of the most promising materials to improve the properties of such composites is carbon nanotubes which offer extraordinary properties that could be exploited to produce flexible and high performance electronic devices.
Aims and objectives
In this project we will produce well dispersed inorganic nano materials within an organic mixture in order to produce large area thin film conducting and also semiconducting composite. As part of the overall vision we will examine the dispersion of the nanoparticles and relate this to the percolation limits of conduction and look to produce conductors and thin film transistors that maybe used for transparent large area electronics such as displays, circuits and sensors.
- A. S. Alshammari*, M. Shkunov and S. Ravi P. Silva, “Ink Jet Printing of Conductive Patterns For Electronic Applications”, Poster presented in the S2K conference, 21-22 June 2011, University of Surrey, Guildford, UK.
Good and stable dispersion of carbon nanotubes was achieved by using different chemical treatment. This dispersion was then mixed with a polymer and deposited on different types of substrates by using ink jet printing technique.
The scanning electron microscope images show a good distribution of the nanotubes in the printed sample. Moreover, we managed to align the nanotubes in the printed composite layer. The results reveal that the electrical properties of the composite are affected by the presence of the nanotubes and depend strongly on the concentration of the nanotubes in the sample.