期刊
CHEMICAL PHYSICS
卷 384, 期 1-3, 页码 44-51出版社
ELSEVIER
DOI: 10.1016/j.chemphys.2011.05.003
关键词
PEDOT:PSS; Conducting polymer; Quantum-chemical calculations
资金
- Swedish Armed Forces
- Swedish Research Council, VR
The geometric and electronic structure of condensed phase organic conducting polymer PEDOT:PSS blends has been investigated by periodic density functional theory (DFT) calculations with a generalized-gradient approximation (GGA) functional, and a plane wave basis set. The influence of the degree of doping of the PEDOT polymer on structural and optical parameters such as the reflectivity, absorbance, conductivity, dielectric function, refractive index and the energy-loss function is studied. A flip from the benzoid to the quinoid structure is observed in the calculations when the neutral PEDOT is doped by negatively charged PSS. Also the optical properties are affected by the doping. In particular, the reflectivity was found to be very sensitive to the degree of doping, where higher doping implies higher reflectivity. The reflectivity is highly anisotropic, with the dominant contribution stemming from the direction parallel to the PEDOT polymer chain. (C) 2011 Elsevier B.V. All rights reserved.
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