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Efficiency enhancement in solid dye-sensitized solar cell by three-dimensional photonic crystal
- Efficiency enhancement in solid dye-sensitized solar cell by three-dimensional photonic crystal
- Hwang, Dae-Kue; Lee, Byunghong; Kim, Dae-Hwan
- DGIST Authors
- Hwang, Dae-Kue; Kim, Dae-Hwan
- Issue Date
- RSC Advances, 3(9), 3017-3023
- Article Type
- Charge Collection; Conversion Efficiency; Dye-Sensitized Solar Cell; Dye-Sensitized Solar Cells (DSCs); Dye Sensitization; Efficiency Enhancement; Enhanced Absorption; Fabrication Process; Infiltration Process; Liquid Electrolytes; Microcomputers; Optically Active; Photoelectrochemical Cells; Photonic Crystals; Photovoltaic Devices; Production Cost; Solar Cells; Solid Electrolytes; Spectral Region; Three Dimensional; Three Dimensional Photonic Crystals; TiO; Titanium Dioxide; Underlayers
- 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.
- Royal Society of Chemistry
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- Convergence Research Center for Solar Energy1. Journal Articles
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