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Journal Article Improved Performance of Metal Foil-Based Dye-Sensitized Solar Cells with Low Porosity and Short Length of TiO2 Nanotube Underlayer
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Authors
Myoung Kim, Kyung-Won Lee, Lee-Woon Jang, Dae-Woo Jeon, Jin-Woo Ju, Ho-Gyeong Yun, In-Hwan Lee
Issue Date
2014-07
Citation
Electrochimica Acta, v.133, pp.610-614
ISSN
0013-4686
Publisher
Elsevier
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.1016/j.electacta.2014.03.075
Project Code
13VB6300, Developing of material, equipment, the production process core technology for organic solar cells with an efficiency of more than 7% in the area of 40, Yun Ho-Gyeong
Abstract
In the present study, we propose low porosity and short length of TiO 2 nanotubes (NTs) as underlayer in dye-sensitized solar cells (DSSCs). Photovoltaic characteristics of DSSCs with and without TiO2 NT underlayer are compared using various electrochemical analyses. Low porosity by small pore diameter, thick walled NT geometry and short length of NT underlayer help efficient charge transfer and reduced recombination at the interface of TiO2 nanoparticles (NPs)/Ti substrate. As a result, we can achieve a conversion efficiency of 6.89% for DSSCs with TiO2 NT underlayer, which is about 20% higher than that obtained from DSSCs with only a TiO2 NPs layer. © 2014 Elsevier Ltd.
KSP Keywords
Conversion efficiency(C.E.), Dye-sensitized solar cells(DSCs), Metal foil, Photovoltaic characteristics, Pore diameter, Short-length, Thick walled, Ti substrate, TiO2 nanoparticles, efficient charge transfer, electrochemical analyses