Abstract
Carboxylic functionalized multi-walled carbon nanotubes/aniline-anthranilic acid copolymer composites with different amounts of MWCNTs were produced by the method of in situ oxidative polymerization. Thin films of the composites were fabricated by thermal evaporation method within the thickness range of 150–200 nm. The structural characteristics of the investigated composites were studied by various techniques. SEM images showed that the resulting nanoparticles have irregular entangled like-plate layers with an average diameter range of 40–60 nm. Indirect optical band gaps Eg1 and Eg2 were calculated depending on the energy range of composite thin films. Electronic parameters of MWCNTs/PANAA thin film, including diode ideality factor (n), series resistance (Rs) and shunt resistance (Rsh) were determined from the I–V characteristic in the dark under different temperatures. The values of n, Rs, and Rsh were found to be 3.80, 5.6 × 104 (Ω), and 1.64 × 106 (Ω), respectively at room temperature.
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