Cited 10 time in webofscience Cited 13 time in scopus

Dye-sensitized solar cells based on trench structured TiO2 nanotubes in Ti substrate

Title
Dye-sensitized solar cells based on trench structured TiO2 nanotubes in Ti substrate
Authors
Kim, Kang-PilLee, Sang-JuKim, Dae-HwanHwang, Dae-KueHeo, Young-Woo
DGIST Authors
Kim, Kang-PilKim, Dae-HwanHwang, Dae-Kue
Issue Date
2013-06
Citation
Current Applied Physics, 13(4), 795-798
Type
Article
Article Type
Article
Keywords
Charge CollectionContact AreaContact AreasDye-Sensitized Solar CellDye-Sensitized Solar Cells (DSCs)EfficiencyNanotubesPhotoelectrochemical CellsSolar CellsSubstratesTiOTiO2 NanotubeTitanium DioxideTrench StructureTrench Structures
ISSN
1567-1739
Abstract
We have proposed dye-sensitized solar cells (DSSCs) with trench-type TiO2 nanotube structure to improve the low device efficiency of conventional TiO2 nanotube DSSCs using Ti substrate. Compared to the conventional standing-type TiO2 nanotube structure based DSSCs, the trench-type TiO2 nanotube structure based DSSCs have shown an improvement of device efficiency of approximately 40% due to the large increase of Jsc. In the trench-type TiO2 nanotube structure, the contact area between the TiO2 nanotube sidewall and the Ti substrate is significantly increased. This increase of contact area provides more charge transport paths than exist in the conventional standing-type TiO2 nanotube structure and reduces the electrical resistance between the Ti substrate and the TiO2 nanotubes. Therefore, the remarkable increase of Jsc is the result of the charge collection efficiency, which is improved due to the increase of contact area between the TiO2 nanotube sidewall and the Ti substrate in the trench-type TiO2 nanotube structure. The fabrication of the trench-type TiO2 nanotube structure is an effective manufacturing process for improving the device efficiency of TiO 2 nanotube based DSSCs using Ti substrate. DSSCs having an 11.9 mm thick trench-type TiO2 nanotube structure have shown an efficiency of 5.74%. © 2012 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/20.500.11750/5314
DOI
10.1016/j.cap.2012.12.010
Publisher
Elsevier B.V.
Related Researcher
Files:
There are no files associated with this item.
Collection:
Convergence Research Center for Solar Energy1. Journal Articles


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