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A 4.2% Efficient Flexible Dye-Sensitized TiO2 Solar Cells using Stainless Steel Substrate
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- Authors
- Man Gu Kang, Nam-Gyu Park, Kwang Sun Ryu, Soon Ho Chang, Kang-Jin Kim
- Issue Date
- 2006-03
- Citation
- Solar Energy Materials & Solar Cells, v.90, no.5, pp.574-581
- ISSN
- 0927-0248
- Publisher
- Elsevier
- Language
- English
- Type
- Journal Article
- Abstract
- An efficient flexible dye-sensitized solar cells (DSSCs) using stainless steel supporting substrate for fabricating nanocrystalline TiO2 film electrodes were developed, intending to improve the photoelectrochemical properties of plastic substrate-based DSSCs. The most important advantage of a stainless steel-based TiO2 film electrode over a plastic-based electrode lies in its high-temperature sinterability. Optimal photovoltaic properties were obtained with a cell where the TiO2 film was coated on both ITO- and SiOx-sputtered stainless steel (denoted as TiO 2/ITO/SiOx/StSt). The photocurrent of the flexible cells with a TiO2/ITO/SiOx/StSt electrode increased significantly, leading to a much higher overall solar conversion efficiency η of 4.2% at 100 mW/cm2, based on short-circuit photocurrent density, open-circuit voltage and fill factor of 11.2 mA/cm2, 0.61 and 0.61 V, respectively, than those reported for cells with plastic substrates. © 2005 Elsevier B.V. All rights reserved.
- KSP Keywords
- Conversion efficiency(C.E.), Dye-sensitized solar cells(DSCs), Film electrode, Flexible dye-sensitized solar cells, High Temperature, Open circuit voltage(VOC), Photoelectrochemical properties, Photovoltaic properties, Plastic substrate, Sensitized TiO2, Short-circuit photocurrent density