Abstract
A series of new organic dyes based on fluorine substituted phenyl moiety, used as a π-linker in various dyes, were designed and synthesized for dye sensitized solar cell (DSSC) application. These dyes share same anchoring group (Cyano acrylic acid) with different donors such as carbazole, thiopene substituted carbazole, triphenylamine and phenothiazine moieties. For effective electron flow, the dyes were incorporated with novel D-π-A or D-A-A framework. The optical, electrochemical, time-resolved photoluminescence (TRPL) spectra and photovoltaic properties of the dyes were carefully studied. The results reveal that without addition of any co-adsorbent, among all fluoro-phenyl spacer dyes, the Cz-dye showed highest open circuit voltage (Voc), short circuit current (Jsc) and exhibited enhanced PCE value of 4.2 (±0.2) %, due to the deeper HOMO level of dye, planarity of backbone with better charge transfer occurring form D to A. The optimization calculations for the geometries of all the dyes with fluoro phenyl substituted π-linkers were ascertained by Density functional theory (DFT) using B3LYP/631G (d,p) basis set.
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.
