Speaker
Description
Organic plant-based dye for Dye-sensitized solar cells (DSSCs) have gained a great interest due to their low cost of manufacturing and environmental friendliness. Majority of
plants in nature contain pigments such as chlorophyll, anthocyanin and betalain that can be used in DSSCs. In this study, the solvents used to extract dye from B. pilosa leaves
as a sensitizer for DSSC were water, methanol, and ethanol. The dye extracted from B. pilosa contained chlorophyll. Ethanol and methanol were more efficient than water
according to the noted absorbance at 665 nm. The molecules responsible in exhibiting broader range of absorbance are known to be pheophytin found within the chlorophyll
extracted from B. pilosa plant. Furthermore, the optical properties using density functional theory (DFT) was computed to optimize the properties of pheophytin. The UV-Vis
optimization indicated the absorbance at 450 – 700 nm while the energy gap was observed at 2.06 eV. The experimental and the theoretical UV-vis results are in agreement and the study shows that dye molecule from B. pilosa is an efficient sensitizer for DSSCs.
Keywords: B. Pilosa, Chlorophyll, DFT, DSSCs, Pheophytin
Level for award;(Hons, MSc, PhD, N/A)?
MSc
| Apply to be considered for a student ; award (Yes / No)? | Yes |
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