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.
Original language | English |
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Pages (from-to) | 610-614 |
Number of pages | 5 |
Journal | Electrochimica Acta |
Volume | 133 |
DOIs | |
Publication status | Published - 2014 Jul 1 |
Externally published | Yes |
Bibliographical note
Funding Information:This research was supported by Basic Science Research Program through the National Research Foundation of Korea(NRF) funded by the Ministry of Science, ICT & Future Planning(2013R1A2A2A07067688, 2010-0019626), and was supported by the New & Renewable Energy of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government Ministry of Knowledge Economy (20123010010140).
Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
Keywords
- Dye-sensitized solar cell
- Metal foil
- Titanuim oxide nanotubes
- Underlayer: Anodization
ASJC Scopus subject areas
- General Chemical Engineering
- Electrochemistry