Abstract
The greatest candidates for organic dyes that exhibit redox activities are vat dyes. Polymers based on vat dyes become effective sensitizer material for dye‐sensitized solar cells (DSSCs) because of their higher absorption coefficient and redox properties by reducing the polymeric film thickness. Herein, an ionic liquid (IL)‐supported D–A type conjugated polyimide sensitizer based on vat dye Congo red and pyromellitic dianhydride is synthesized via condensation polymerization technique. This polymeric material is doped with BF3 and supported with a minimal quantity of IL for better conductivity results and interface creation. The synthesized polyimide shows altruistic oxidoreduction properties with a narrow bandgap of 1.96 eV. Additionally, it comprises conjugated electrons having a backbone system that shows good electrical conductivity (>10−4 S cm−1) and becomes a semiconducting material. To determine the photovoltaic characteristics of the synthesized polymeric material, electrode fabrication and DSSC are carried out. The estimated photovoltaic characteristics are Jsc = 0.2324 mA cm−2, fill factor = 0.6906, and Voc = 0.2380 V. The power conversion efficiency of the device is obtained at 0.04%. The film‐forming property of polymeric sensitizer can reduce electron passivation in the cell. These observed properties of polymeric sensitizer material hardly claim their suitability for DSSCs applications.
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.
