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Fabrication of Dye-Sensitized Solar Cells Based on Embedded Photoelectrodes of TiO2 Nanotube-Nanoparticles Composite

Title
Fabrication of Dye-Sensitized Solar Cells Based on Embedded Photoelectrodes of TiO2 Nanotube-Nanoparticles Composite
Authors
Kim, Kang-PilHwang, Dae-KueSung, Shi-Joon
DGIST Authors
Kim, Kang-PilHwang, Dae-Kue; Sung, Shi-Joon
Issue Date
2016-10
Citation
Journal of Nanoscience and Nanotechnology, 16(10), 10716-10719
Type
Article
Article Type
Article
Keywords
Cell EfficiencyCharge Collection EfficiencyDye-Sensitized Solar Cells (DSCs)EfficiencyElectrical ResistancesElectrodesEmbedded-ElectrodeEmbedded-ElectrodesFabrication TechniqueNanoparticle (NPs)NanoparticlesNanotubesPhoto-ElectrodesSolar CellsSubstratesTiO2 Nanotube-Nanoparticle CompositeTitanium DioxideTransport PathwaysYarn
ISSN
1533-4880
Abstract
We adopted an embedded photoelectrode, which consisted of a composite of TiO2 nanotubes (NTs) and nanoparticles (NPs) in a Ti-foil substrate to improve the cell efficiency of conventional TiO2 NP-based dye-sensitized solar cells (DSSCs) with Ti-foil substrates. The resulting increase in short-circuit current density (Jsc) of the embedded-TiO2-NT-NP DSSCs was a major factor in the ∼30% improvement in cell efficiency compared to that of conventional TiO2-NP DSSCs on Ti foil. In addition to more charge-transport pathways, the embedded-TiO2-NT-NP DSSCs had a larger contact area between the TiO2-NT-NP sidewall and the Ti foil, which reduced the electrical resistance and improved the charge-collection efficiency, resulting in the improvement in Jsc. The embedded-electrode DSSC with 11 μm TiO2-NT and ∼8 μm TiO2-NP layers exhibited the best efficiency of 5.8%, demonstrating that the embedded-electrode approach is an effective fabrication technique to improve the cell efficiency of the flexible DSSCs based on Ti-foil substrates. Copyright © 2016 American Scientific Publishers All rights reserved.
URI
http://hdl.handle.net/20.500.11750/5072
DOI
10.1166/jnn.2016.13225
Publisher
American Scientific Publishers
Related Researcher
Files:
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Collection:
Convergence Research Center for Solar Energy1. Journal Articles


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