Engineering High-Performance Carbazole-Based Co-Sensitizers: Synthesis, Photophysical Characterization, and Synergistic Enhancement in Dye-Sensitized Solar Cells.

ABSTRACT: The current research implies the synthesis of two novel organic co-sensitizers based on carbazole, which are referred to as MA-1 and MA-2. The performances of these sensitizers in dye-sensitized solar cells (DSSCs) were also studied. The molecular structures were designed using donor-π-acceptor (D-π-A) configurations, where 9-heptyl carbazole and 9-ethyl carbazole served as donors and malononitrile (MA-1) and cyanoacetic acid (MA-2) acted as acceptor/anchoring groups. The photophysical features of the sensitizers were evaluated via UV-Vis spectroscopy, revealing broad absorption in the visible range with λ_max at 468 nm (MA-1) and 478 nm (MA-2) and corresponding molar extinction coefficients of 3.76 × 10⁴ M⁻¹cm⁻¹ and 5.34 × 10⁴ M⁻¹cm⁻¹, respectively. Electrochemical analysis show

SUBMITTER: Eltoukhi M 

PROVIDER: S-EPMC12672796 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature