Three Fresh Plant Seeds as Natural Dye Sensitizers for Titanium Dioxide Based Dye Sensitized Solar Cells

Abstract

In this paper, we used the extracts of three fresh plant seeds as photosensitizers for DSSCs based on TiO 2 nanopowder as a semiconducting material. Ethanol was used to extract the dyes from the seeds. The fill factors of the cells sensitized with the seeds of Raphanus raphanistrum, Lepidium sativum and Dianthus barbatus were 0.45, 0.40, and 0.48, respectively, whereas the efficiencies were 0.05, 0.03, and 0.15. The performance of the DSSC sensitized with Dianthus barbatus was investigated at various pH values of the dye solution and found to have a considerable effect of the cell efficiency.

A comparative study: synthetic dyes as photosensitizers for dye-sensitized \\solar cells

“…This photosensitization occurs when the dye absorbs part of the visible light spectrum and injects the excited electron into the conduction band of the semiconductor. DSSCs have been extensively studied by many physicists and engineers due to their unique advantages such as low cost [4][5][6][7][8][9][10][11][12][13][14]. DSSCs based on TiO 2 have been intensively investigated [4][5][6].…”

Research on dye sensitized solar cells: recent advancement toward the various constituents of dye sensitized solar cells for efficiency enhancement and future prospects

“…The largest discovery was made regarding spinach oleracea extract. Two distinct DSSCs were collected utilizing nanostructured mesoporous TiO 2 and ZnO films, the outcomes are summarized in Table 9 , 129 and the conductivity parameters of the DSSC employing the various distinctive dyes are summarized.…”