Abstract
Recently, organic sensitizers-based dye sensitized solar cells (DSSCs) have attracted much attention due to their several advantages such as low cost preparation, structural diversity, and high power conversion efficiency (η: 8-9%). Organic sensitizers consist typically of three segments of donor, π-linker, and acceptor (D-π-A), which are shown to have efficient intramolecular charge transfer (ICT) characteristics. Particularly, organic sensitizers bearing dithienosilole (DTS) as a π-linker have shown to have high efficiencies (η: 7.6-10.5%) in DSSCs performance due to its unique photophysical properties (σ-π conjugation) and coplanarity. In addition, the efficiency in DSSC performance is a quite sensitive depending on the nature of substituents at 3position of DTS ring. For examples, the bulky substitution on silicon atom of DTS ring may reduce the π-π stacking interactions of dyes and may be beneficial to high electron injection yield and the power conversion efficiency. These facts prompted us to develop new organic dyes containing DTS π-linker and investigate the effect of bulky substituent at 3-position of DTS ring in DSSC performance. Herein, we report the results of our investigation on the preparation, photophysical properties, electrochemical behavior, and DSSC performance of two novel DTS dyes.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.