کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
80690 | 49395 | 2006 | 9 صفحه PDF | دانلود رایگان |
Blue-violet anthocyanins from Jaboticaba (Myrtus cauliflora Mart) and Calafate (Berberies buxifolia Lam) were employed as TiO2 dye-sensitizers. Solar cells sensitized by Jaboticaba extracts achieved up to Jsc=9.0 mA cm−2, Voc=0.59 V, Pmax=1.9 mW cm−2 and ff=0.54, while for Calafate sensitized cells the values determined were up to Jsc=6.2 mA cm−2, Voc=0.47 V, Pmax=1.1 mW cm−2 and ff=0.36. Other natural dyes were evaluated without significant photocurrent, demonstrating that only selected extracts are capable of converting sunlight in electricity. The results obtained with extracts of Jaboticaba and Calafate show a successful conversion of visible light into electricity by using natural dyes as wide band-gap semiconductor sensitizers in dye-sensitized solar cells. It also represents an environmentally friendly alternative for dye-sensitized solar cells with low cost production and an excellent system for educational purposes.
Journal: Solar Energy Materials and Solar Cells - Volume 90, Issue 13, 15 August 2006, Pages 1936–1944