Abstract
The electronic effects at polymer/indium tin oxide (ITO) interface play a crucial role in light-emitting devices as controlling charge injection. Near-infrared spectrophotometry has been used to characterize the modifications of the ITO electronic properties induced by the deposition of a PPV derivative. Near-infrared (NIR) spectra have been analyzed using Drude free electron theory providing information on the free carriers density and local conductivity. The optical analysis reveals a 10% reduction of the ITO free carrier concentration at the contact with the PPV derivative, which has been attributed to the formation of a polarization layer at the interface. Comparison has been done between polymer deposited directly on ITO or on ITO functionalized with a phosphonic acid layer (SAM) to improve the electronic/polymer interface. The NIR study indicates that charge transfers occur with the first deposited layer, providing confirmation of an interface effect.
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.
