Volume 7, Issue 1

Dye Sensitized Solar Cells Based on Commelino nudiflora as Sensitizer

Adenike Boyo1, Abdulsalam Ibrahim2, Saheed Oseni3, Olasunkanmi Kesinro4, Fatia Akingbade5, Ayinde Oladepo6, Paul Okafor7, and Oluwanifemi Abiola8
1Lagos State University, Nigeria, 2Fountain University, Osogbo, Nigeria, 3Lagos State University, Nigeria, 4Covenant University, Ota, Nigeria, 5Lagos State University, Nigeria, 6Lagos State University, Nigeria, 7Lagos State University, Nigeria, and 8Lagos State University, Nigeria


Natural dyes extracted from the leaves and flowers of Commelino nudiflora was utilized as sensitizer in dye sensitized solar cells (DSSCs) by using a solvent system of distilled water, methanol and M HNO3 in the ratio 10: 9: 1. Also, the crude extract was purified to obtain anthocyanins from the leaves and flowers. Optical characterizations of the dyes were conducted by using UV-vis absorption and electrical characterization was determined using a solar simulator. Optical absorption for the crude extracts indicates an absorption in the visible range (400 nm) with the leaves extract showing better absorbance. Optical absorption for the purified extracts indicates the leaves extract has better absorbance though they show similar pattern. The crude flower extract has the highest efficiency of 0.00389 %. The characteristics of the dye-sensitized solar cell (DSSC) has been simulated using MATLAB based on TiO2 by modifying the internal parameters. The simulated results show that the crude and purified extracts for the leaves showed a better power conversion efficiency in comparison to the flower extracts.

Keywords: Anthocyanins, Electrical properties Op, and Optical properties

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