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http://dx.doi.org/10.9713/kcer.2018.56.4.447

Titania Nanotube-based Dye-sensitized Solar Cells  

Kim, Taehyun (Department of Chemical Engineering, Kyonggi University)
Jung, Jihoon (Department of Chemical Engineering, Kyonggi University)
Publication Information
Korean Chemical Engineering Research / v.56, no.4, 2018 , pp. 447-452 More about this Journal
Abstract
Titanium nanotubes (TNT) of various lengths ranging from $0.34^{\circ}C$ to a maximum of $8.9^{\circ}C$ were prepared by anodizing a titanium metal sheet in an electrolyte containing fluorine ion ($F^-$) of HF, NaF and $NH_4F$. When TNT prepared by anodizing was calcined at $450^{\circ}C$, anatase crystals with photo activity were formed. The TNT-based dye-sensitized solar cell (DSSC) showed a maximum conversion efficiency of 4.71% when the TNT length was $2.5{\mu}m$. This value was about 18% higher than photo conversion efficiency of the FTO-based DSSC coated with titania paste. And the short circuit current density ($J_{sc}$) of the TNT-DSSC was $9.74mA/cm^2$, which was about 35% higher than the $7.19mA/cm^2$ of FTO-DSSC. The reason for the higher conversion efficiency of TNT-DSSC solar cells is that photoelectrons generated from dyes are rapidly transferred to the electrode surface through TNT, and the recombination of photoelectrons and dyes is suppressed.
Keywords
DSSC; Titania nanotube; Anodizing;
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Times Cited By KSCI : 3  (Citation Analysis)
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