ArticleScientific reports2025
Optimising bifacial dye-sensitized solar cells with graphene-enhanced TPT configuration photoanode for operational stability.
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Bifacial Dye-sensitized solar cells (bifacial DSSCs) are a promising low-cost and with promising light absorbance alternative to conventional DSSCs, known for their potential for transparency and customizability to be integrated into building-integrated photovoltaic (BIPV). This study explores enhancing efficiency and stability in bifacial DSSCs by integrating graphene into the bifacial configured photoanode. Graphene was incorporated into titanium dioxide ([Formula: see text]) photoanodes using a modified Ti-Nanoxide (T/sp) commercial paste, and powder type (P25) configurate as (T/sp-P25-T/sp) in tri-layer (identified optimal structure to maximizing bifacial light harvesting in our previous study) with Concentrations of 0.05%, 0.1%, and 0.2% graphene were tested. The structural, optical, and electrical properties of the materials were characterised using field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDS), Raman spectroscopy, ultraviolet-visible (UV-Vis) spectroscopy, Tauc plots, current-voltage (J-V) measurements, and electrochemical impedance spectroscopy (EIS). The incorporation of 0.1% graphene resulted in the highest initial power conversion efficiency (PCE) of 11.09% under combined front and back illumination at the 4th day of testing, indicating improved electron transport and stability. Over a period of ten days, the performance of these cells remained significantly superior compared to those with pure [Formula: see text]. These results highlight the potential of graphene-enhanced TPT-configured photoanodes for improving both the efficiency and durability of bifacial DSSCs, particularly in applications such as building-integrated photovoltaics.
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