Abstract
Although there are some advantages of PEDOT:PSS films, including high conductivity, high transparency to visible light, excellent water solubility, and being environmentally-friendly, PEDOT:PSS solutions are acidic owing to the PSS polymer with a –SO3H group donating the hydrogen ions. This results in the etching of the ITO surface as the PEDOT:PSS films are deposited on the ITO substrates using a spin coating process, which is attributed to the migration of indium and tin into the PEDOT:PSS film. In this paper, a PEDOT:PSS solution was treated with ammonia with different volume ratios prior to deposition. It is found that ammonia treatments can totally neutralize the hydrogen ions and reduce the AIn3+/AIn3+(pristine) atomic area ratio of PEDOT:PSS surface calculated from the XPS data due to the inhibition of the degradation at the PEDOT:PSS/ITO layer interface. Furthermore, the ASO3H/ASO3− on the PEDOT:PSS surface obviously changes with ammonia-treated solution at pH < 7, and APEDOT/APSS is greatly influenced by an ammonia-treated solution at pH > 7, which affects the surface energy of PEDOT:PSS film, helps improve the film roughness, and enhances the electrical conductivity of the films.
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.
