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S. DEB1,* , D. SARKAR1
- Department of Physics, Gauhati University, Guwahati-781014, Assam, India
Structure, morphology, optical and electrical properties of silver nanostructured nanocomposites synthesized for various concentrations of silver salt are studied. The composites have been developed in polyvinyl alcohol matrix. Change in silver ion concentration has been realized by changing AgNO3 concentration in the reactants. X-ray diffraction patterns show a characteristic peak for silver nanoparticles at 2Ө = 380. Infrared spectra reveal the evidence of silver- PVA cross-linking. Scanning electron microscopy shows evidence of near spherical particles with increasing size from 20 to100 nm with the increase in AgNO3 concentration. UV-Visible absorption spectra show strong surface plasmon resonance peak in the region of 423-441nm, a consequence of development of nano-sized Ag particles. Photoluminescence spectra show emission peak at 622-623 nm. Electrical property measured through current-voltage characteristics exhibit ohmic behaviour..
Silver, Nanoparticles, Plasmon resonance, Photoluminescence, Polymer composite.
Submitted at: Feb. 15, 2017
Accepted at: April 8, 2019
S. DEB, D. SARKAR, Silver ion concentration dependent properties of silver nanostructured nanocomposite films, Journal of Optoelectronics and Advanced Materials Vol. 21, Iss. 3-4, pp. 275-280 (2019)
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