Performance of dye-sensitized solar cells by utilizing Codiaeum Variegatum Leaf and Delonix Regia Flower as natural sensitizers

[Display omitted] •Successfully TiO2 NRs have been grown on the FTO substrate via cheap and effective hydrothermal method.•Mixed CVL and DRF (1:1 v:v) dye pigments based DSSC consist of Ni CE have shown the maximum efficiency of 0.24 %•Separate CVL and DRF photosensitizer based DSSC have shown 0.12 and 0.17% PCE respectively. Codiaeum Variegatum Leaf (CVL) and Delonix Regia Flower (DRF) extracts were utilized as a photosensitizer, coated on the TiO2 nanorods (NRs) photo anodes in the dye sensitized solar cell (DSSC) fabrication and performance analysis. Current density-Voltage (J-V) analysis were performed to evaluate the photosensitization with CVL, DRF and mixed dyes, interestingly mixed dyes have shown improved performance owing to plausible mechanism of synergistic effect. The optimum power conversion efficiency (PCE) of the DSSCs having CVL and DRF dyes are 0.12 and 0.17%. Whereas enhanced PCE of 0.24% is achieved with mixed (1:1, v:v) CVL and DRF dyes based DSSC.