Enhancing the Power Conversion Efficiency of Dye-sensitized Solar Cells through Natural Dye Optimization
An Electrical Engineering Perspective
DOI :
https://doi.org/10.62050/ljsir2026.v4n1.668Mots-clés :
Dye Solar Cells, Power conversion efficiency, electrical engineering, natural dye, optimizationRésumé
This study evaluates the electrical performance of dye‑sensitized solar cells (DSSCs) fabricated with six natural dyes and a commercial ruthenium reference (N719). Using engineered datasets that mirror typical laboratory outcomes, we analyze charge transport, interfacial resistance, and photovoltaic metrics (Jsc, Voc, FF, PCE). Electrochemical impedance spectroscopy (EIS) parameters and ultraviolet-visible absorption characteristics are presented alongside IV and Nyquist analyses. Statistical testing (one‑way ANOVA and pairwise comparisons) demonstrates that while N719 retains superior mean PCE (~8.3%), certain natural dyes such as Blackberry and Red Cabbage achieve competitive PCEs (≈3–3.6%) with lower charge‑transfer resistances than other naturals. Regression and correlation analyses show PCE is driven predominantly by Jsc and FF, with Rct exerting a strong negative influence. We propose engineering interventions including nanostructured TiO₂, co‑sensitization and optimized redox electrolytes to close the gap between natural dyes and commercial standards. This work frames natural dyes within an electrical‑engineering optimization path for low‑cost, sustainable DSSCs.
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(c) Copyright Ogbonnaya Udonsi Uduma, Muhammad Uthman, Aliyu O. Sani (Author) 2026
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