Abstract
Dye-sensitized solar cells, named by us Dye-Cells, are one of the most promising devices for solar energy conversion due to their reduced production cost and low environmental impact, especially those sensitized by natural dyes. The efficiency and stability of devices based on natural sensitizers such as mulberry ( Morus alba Lam), blueberry ( Vaccinium myrtillus Lam), and jaboticaba's skin ( Mirtus cauliflora Mart) were investigated. Dye-Cells prepared with aqueous mulberry extract presented the highest P max value (1.6 mW cm −2) with J sc = 6.14 mA cm −2 and V oc = 0.49 V. Photoelectrochemical parameters of 16 cm 2 active area devices sensitized by mulberry dye were constant for 14 weeks of continuous evaluation. Moreover, the cell remained stable even after 36 weeks with a fairly good efficiency. Therefore, mulberry dye opens up a perspective of commercial feasibility for inexpensive and environmentally friendly Dye-Cells.
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