Novel method of fabrication of polyaniline–CdS nanocomposites: Structural, morphological and optoelectronic properties

Polyaniline–CdS nanocomposites have been synthesized by spin coating technique. The nanocrystalline CdS powder of particle size 40–50nm was synthesized by sol–gel technique and the polyaniline was synthesized by chemical oxidative polymerization of aniline. The composite films were characterized by...

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Bibliographic Details
Published in:Ceramics international 2012-07, Vol.38 (5), p.3999-4007
Main Authors: Raut, B.T., Chougule, M.A., Sen, Shashwati, Pawar, R.C., Lee, C.S., Patil, V.B.
Format: Article
Language:English
Subjects:
Cadmium sulfides
Ceramics
Diffraction
FESEM
Fourier transform infrared spectroscopy
Molecular chains
Nanocomposites
Nanoparticles
Polyanilines
Polymers
Spin coating
Thin films
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Summary:Polyaniline–CdS nanocomposites have been synthesized by spin coating technique. The nanocrystalline CdS powder of particle size 40–50nm was synthesized by sol–gel technique and the polyaniline was synthesized by chemical oxidative polymerization of aniline. The composite films were characterized by X-ray diffraction (XRD), field effect scanning electron microscopy (FESEM), Fourier transform infrared spectroscopy (FTIR), UV–Vis spectroscopy and Four probe method. The results were compared with corresponding data on pure polyaniline films. The intensity of diffraction peaks for PANi–CdS composites is lower than that for CdS. The conductivity measurement shows that molecular chain constitution of polyaniline is the most important carrier in polyaniline–CdS nano composite. The optical studies showed that variation in band gap of polyaniline (3.40eV) to 2.54eV CdS which is attributed to the interaction of CdS nanoparticles with PANi molecular chains.
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2012.01.056