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Electrical, Optical and Morphological Properties of P3HT/MWNT Nanocomposite Prepared by In-situ Polymerization

Author(s):
Viney Saini, Zhongrui Li, Shawn Bourdo, Enkeleda Dervishi, Yang Xu, Xiaodong Ma, Tito Viswanathan, Anca Petre, Divey Saini, Alexandru R Biris, Dan Lupu, Alexandru S. Biris

In-situ polymerization of soluble conductive polymer poly(3-hexylthiophene) (P3HT) was performed in the presence of different levels of doping concentration of multi-wall carbon nanotubes (MWNTs) (0.1, 1.0, 5.0 and 10 wt.%). The P3HT-MWNT nanocomposites are of great interest because of their applications in field-effect transistors, organic light emitting diodes, organic solar cells, etc. The morphological, optical, and electrical properties of the nanocomposites were thoroughly studied by Transmission Electron Microscopy (TEM), Nuclear Magnetic Resonance (NMR) spectroscopy, Raman spectroscopy, UV-Vis-NIR spectroscopy, and temperature dependent conductivity measurements. It was found that nanotubes are dispersed uniformly in the polymer matrix while the polymer chains robustly wrap around the nanotube walls. Therefore, the interaction between the nanotubes and the polymer matrix enhances the optical and electrical properties of the nanocomposite for certain doping concentrations of MWNTs. In addition, the charge carrier transport phenomenon is also studied for these nanocomposites.

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Track ID:
Paper #: 1149-QQ04-07
DOI: 10.1557/PROC-1149-QQ04-07