Journal
ENERGY & ENVIRONMENTAL SCIENCE
Volume 3, Issue 7, Pages 905-909Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c000869a
Keywords
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Funding
- Sanyo Special Steel Cultural Promotion Foundation
- Himeji City (Japan)
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A food pigment (Monascus yellow) extracted from Monascus fermentations (red yeast rice) has been studied as a novel sensitizing dye for dye-sensitized solar cells (DSCs). The photocurrent action spectrum was in agreement with the absorption spectrum of the dye adsorbed on a nanocrystalline-TiO(2) electrode. The DSC fabrication process has been optimized in terms of the rinsing solvent used after dye adsorption and the dye-uptake duration. After optimizing nanocrystalline-TiO(2) electrodes and pH conditions, the resulting maximal photovoltaic characteristics were an open-circuit voltage of 0.57 V, a short-circuit current of 6.1 mA cm(-2), and a fill factor of 0.66, yielding an energy conversion efficiency of 2.3%.
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