Abstract
The effect of small concentration of methylene blue on the photocurrents were studied in solid-state photoelectrochemical cells fabricated using conducting polypyrrole (PPy) coated electrodes sandwiched with solid polymer electrolyte viz. polyvinyl alcohol (PVA) with phosphoric acid. These exhibit excellent photo-response to visible light: photocurrent being 3 to 4 orders of magnitude greater than dark current depending on the concentration of the sensitizer. The current–voltage characteristics in such cells reveal that the charge transport is mainly governed by the space charge effects and the sensitization effects are due to lowering of potential barrier formed at the PPy/PVA interface under photoexcitation.
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.
