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Efficiency enhancement in solid dye-sensitized solar cell by three-dimensional photonic crystal

Title
Efficiency enhancement in solid dye-sensitized solar cell by three-dimensional photonic crystal
Authors
Hwang, Dae-KueLee, ByunghongKim, Dae-Hwan
DGIST Authors
Hwang, Dae-KueKim, Dae-Hwan
Issue Date
2013
Citation
RSC Advances, 3(9), 3017-3023
Type
Article
Article Type
Article
Keywords
Charge CollectionConversion EfficiencyDye-Sensitized Solar CellDye-Sensitized Solar Cells (DSCs)Dye SensitizationEfficiency EnhancementEnhanced AbsorptionFabrication ProcessInfiltration ProcessLiquid ElectrolytesMicrocomputersOptically ActivePhotoelectrochemical CellsPhotonic CrystalsPhotovoltaic DevicesProduction CostSolar CellsSolid ElectrolytesSpectral RegionThree DimensionalThree Dimensional Photonic CrystalsTiOTitanium DioxideUnderlayers
ISSN
2046-2069
Abstract
Dye-sensitized solar cells (DSSCs) offer an attractive alternative to conventional solar cells because of their lower production cost. However, the liquid electrolyte used in these cells is unstable because of solvent leakage or evaporation, and DSSCs that use a solid electrolyte do not perform as well. In this paper, we present a design in which a nanocrystal (nc)-TiO2 underlayer is integrated with an optically active porous three dimensional photonic crystals (3D PCs) overlayer, and a sequential infiltration process is adopted to introduce additives to the solid electrolyte. This architecture allows effective dye sensitization, electrolyte infiltration, and charge collection from both the nc-TiO2 and the PC layers, yielding enhanced absorption in a specific spectral region. We describe the fabrication process and demonstrate the improved performance of the fabricated DSSCs, which exhibited conversion efficiencies that were as much as 32% higher than those of a conventional DSSC. This approach should be useful in solid-state devices where pore infiltration is a limiting factor, as well as in weakly absorbing photovoltaic devices. © 2013 The Royal Society of Chemistry.
URI
http://hdl.handle.net/20.500.11750/5336
DOI
10.1039/c2ra22746k
Publisher
Royal Society of Chemistry
Related Researcher
Files:
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Collection:
Convergence Research Center for Solar Energy1. Journal Articles


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