Abstract
We investigate the complex conductivity spectra σ̃(ω) of doped polyaniline, prepared as a typical conjugated polymer with various dc electrical conductivities up to 1000 S/cm, by using terahertz transmission spectroscopy. With the increase in dc conductivity, the imaginary part of σ̃(ω) is found to definitely change its sign from negative to positive throughout the measured frequency range. This shows that the optoelectronic nature of carriers in conducting polyaniline shifts from the localized regime to the delocalized regime. The real and imaginary parts of σ̃(ω) can be simultaneously reproduced by an extended Drude model, giving the degrees of carrier (de)localization.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
