期刊
APPLIED PHYSICS LETTERS
卷 99, 期 14, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3647574
关键词
carrier mobility; infrared spectra; polymers; terahertz wave spectra; ultraviolet spectra
The effect of solvent such as ethylene glycol (EG) on the carrier transport in poly (3,4-ethylenedioxythiophene)/poly(4-styrenesulfonate) (PEDOT/PSS) was studied by the combination of terahertz (THz) time-domain transmission spectroscopy (0.1-3 THz) and broadband reflectance spectroscopy (4-800 THz). While the broadband reflectance showed a plasma edge in the near-infrared, the frequency dependence of the THz conductivity of PEDOT/PSS indicated weakly localized carrier behavior. The simultaneous fitting of both spectra by the localization-modified Drude model allowed us to conclude that the significant increase in conductivity with the addition of EG is due to improved carrier mobility in the PEDOT/PSS. (C) 2011 American Institute of Physics. [doi:10.1063/1.3647574]
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