Dyes Extracted from Safflower, Medicago Sativa, and Ros Marinus Oficinalis as Photosensitizers for Dye-sensitized Solar Cells
| Authors | Sofyan A. Taya1,2 , Taher M. El-Agez1,2 , Monzir S. Abdel-Latif2,3, Hatem Ghamri1,2, Amal Batniji1,2, Wael A. Tabaza1,2 |
| Affiliations | 1 Physics Department, Islamic University of Gaza, Gaza, Palestinian Authority 2 Renewable Energy Center, Islamic University of Gaza, Gaza, Palestinian Authority 3 Chemistry Department, Islamic University of Gaza, Gaza, Palestinian Authority |
| Е-mail | staya@iugaza.edu.ps |
| Issue | Volume 8, Year 2016, Number 1 |
| Dates | Received 24 October 2015; published online 15 March 2016 |
| Citation | Sofyan A. Taya, Taher M. El-Agez, Monzir S. Abdel-Latif, et al., J. Nano- Electron. Phys. 8 No 1, 01026 (2016) |
| DOI | 10.21272/jnep.8(1).01026 |
| PACS Number(s) | 84.60.Jt |
| Keywords | Dye-sensitized solar cells (2) , Plant leaves, Impedance spectroscopy (4) . |
| Annotation | In this work, three extracts of plant leaves were used as sensitizers for dye-sensitized solar cells (DSSCs). These plants are Safflower, Medicago sativa and Ros marinus oficinalis. The natural dyes were extracted before and after grinding the plant leaves. The UV-VIS absorption spectra of the three extracts in ethyl alcohol solution were measured. The DSSCs were assembled using TiO2 films on Fluorine-doped tin oxide (FTO) coated glass. The DSSCs sensitized with the extracts of grinded leaves showed a better performance compared to those sensitized with un-grinded leaves with the highest efficiency of 0.115 % was obtained for the DSSC sensitized with Medicago sativa. The performance of the DSSCs sensitized with Safflower and Ros marinus oficinalis was significantly improved by acid treatment of the FTO substrates. Impedance spectroscopy of the fabricated cells was also carried out. |
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