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Extraction, preparation and application of pigments from Cordyline fruticosa and Hylocereus polyrhizus as sensitizers for dye-sensitized solar cells

pmid: 28213142
Current study employs mixture of chlorophyll-anthocyanin dye extracted from leaves of Cordyline fruticosa as new sensitizers for dye-sensitized solar cell (DSSCs), as well as betalains dye obtained from fruit of Hylocereus polyrhizus. Among ten pigments solvents, the ethanol and methanol extracts revealed higher absorption spectra of pigments extracted from C. fruticosa and H. polyrhizus respectively. A major effect of temperature increase was studied to increase the extraction yield. The results indicated that extraction temperature between 70 and 80°C exhibited a high dye concentration of each plant than other temperatures. The optimal temperature was around 80°C and there was a sharp decrease of dye concentration at temperatures higher than this temperature. According to experimental results, the conversion efficiency of DSSC fabricated by mixture of chlorophyll and anthocyanin dyes from C. fruticosa leaves is 0.5% with short-circuit current (Isc) of 1.3mA/cm-2, open-circuit voltage (Voc) of 0.62V and fill factor (FF) of 60.16%. The higher photoelectric conversion efficiency of the DSSC prepared from the extract of H. polyrhizus was 0.16%, with Voc of 0.5V, Isc of 0.4mA/cm-2 and FF of 79.16%. The DSSC based betalain dye extracted from fruit of H. polyrhizus shows higher maximum IPCE of 44% than that of the DSSCs sensitized with mixed chlorophyll-anthocyanin dye from C. fruticosa (42%).
- University of Baghdad Iraq
- Fuel Cell Institute Malaysia
- Universiti Malaysia Terengganu Malaysia
- Fuel Cell Institute Malaysia
- University of Baghdad Iraq
Cactaceae, Chlorophyll, Titanium, Photons, Cordyline, Surface Properties, Temperature, Spectrometry, X-Ray Emission, Electrons, Pigments, Biological, X-Ray Diffraction, Spectroscopy, Fourier Transform Infrared, Electrochemistry, Solar Energy, Solvents, Coloring Agents
Cactaceae, Chlorophyll, Titanium, Photons, Cordyline, Surface Properties, Temperature, Spectrometry, X-Ray Emission, Electrons, Pigments, Biological, X-Ray Diffraction, Spectroscopy, Fourier Transform Infrared, Electrochemistry, Solar Energy, Solvents, Coloring Agents
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