Dye-sensitized solar cells with natural dyes extracted from plant seeds

作者：El Ghamri Hatem S; El Agez Taher M; Taya Sofyan A^*; Abdel Latif Monzir S; Batniji Amal Y

来源：Materials Science- Poland, 2014, 32(4): 547-554.

DOI：10.2478/s13536-014-0231-z

• dye sensitized solar cell
• TiO2
• ZnO
• natural dyes
• plant seeds

The application of natural dyes extracted from plant seeds in the fabrication of dye-sensitized solar cells (DSSCs) has been explored. Ten dyes were extracted from different plant seeds and used as sensitizers for DSSCs. The dyes were characterized using UV-Vis spectrophotometry. DSSCs were prepared using TiO2 and ZnO nanostructured mesoporous films. The highest conversion efficiency of 0.875 % was obtained with an allium cepa (onion) extract-sensitized TiO2 solar cell. The process of TiO2-film sintering was studied and it was found that the sintering procedure significantly affects the response of the cell. The short circuit current of the DSSC was found to be considerably enhanced when the TiO2 semiconducting layer was sintered gradually.

• 出版日期2014-12