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Structural, morphology and optical properties of ITO/PEDOT:PSS and ITO/Ag nanoparticles/PEDOT:PSS thin films

Published online by Cambridge University Press:  08 March 2013

Somaiyeh Adibi ,
Najmeh Adibi ,
Rasoul Malekfar  and
Saeid Davatolhagh
Somaiyeh Adibi
Affiliation:
Atomic and Molecular Group, Department of Physics, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran Department of Physics, College of Sciences, Shiraz University, Shiraz 71454, Iran
Najmeh Adibi
Affiliation:
Atomic and Molecular Group, Department of Physics, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran Department of Physics, College of Sciences, Shiraz University, Shiraz 71454, Iran
Rasoul Malekfar*
Affiliation:
Atomic and Molecular Group, Department of Physics, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran
Saeid Davatolhagh
Affiliation:
Department of Physics, College of Sciences, Shiraz University, Shiraz 71454, Iran
*
ae-mail: malekfar@modares.ac.ir
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Abstract

In order to investigate the effects and optical properties in the mid-infrared region, thin films of PEDOT:PSS were spin-coated on ITO glasses and ITO/Ag nanoparticles substrates. Scanning Electron Microscopy, SEM, has been applied to investigate the surface morphology and measure the size of nanoparticles. Dielectric and optical coefficients such as refractive index, n, and extinction coefficient, k, were calculated by applying Kramers-Kronig dispersion relations to the experimentally recorded near normal reflection FTIR spectra. Different analyses confirm that Ag nanoparticles are present in the structure of the synthesized thin films. The recorded Raman spectra have shown that the intensity enhancement of Raman peaks of PEDOT:PSS increases due to the plasmon resonance of Ag colloidal silver nanoparticles layer and optical properties investigation has confirmed the electrical conductivity increase in the mid-infrared region.

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 61 , Issue 3 , March 2013 , 30301
Copyright
© EDP Sciences, 2013

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