Triphenylamine-Based Metal-Free Organic Dyes as Co-Sensitizers: Enhancing Dye-Sensitized Solar Cell Performance Through Innovative Molecular Design.

ABSTRACT: A series of novel dye-based D-π-A-type metal-free organic dyes was prepared via the Wittig reaction. Dyes SAS-1-5 containing triphenylamine (TPA) as a strong electron donor was linked with an aryl ring as a π-conjugation spacer, cyanoacetamide, 2-(phenylsulfonyl)acetonitrile, and thiazolidine as the electron acceptors. Herein, we confirmed the chemical structures of the co-sensitized triphenylamine sensitizers using spectral analyses. In addition, their optical properties, electrochemical characteristics, and photovoltaic performances were estimated. Theoretical density functional theory (DFT) at the B3LYP/6-311G(d, p) level was used to elucidate the bridged effect on geometry. The SAS-1-5 sensitizers showed absorption bands in a dimethylformamide (DMF) solution in the range of (450-590 nm

SUBMITTER: Mahmoud SE 

PROVIDER: S-EPMC12718282 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature