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http://dx.doi.org/10.5806/AST.2014.27.6.308

The characteristics of dye-sensitized solar cells using carbon nanotube in working and counter electrodes  

Kim, Bora (school of Energy, Materials & Chemical Engineering, Korea Univ. of Tech. & Edu.)
Song, Suil (School of Energy, Materials & Chemical Engineering, Korea Univ. of Tech. & Edu.)
Lee, Hak Soo (School of Energy, Materials & Chemical Engineering, Korea Univ. of Tech. & Edu.)
Cho, Namjun (School of Energy, Materials & Chemical Engineering, Korea Univ. of Tech. & Edu.)
Publication Information
Analytical Science and Technology / v.27, no.6, 2014 , pp. 308-313 More about this Journal
Abstract
The effect of electrochemical characteristics of dye-sensitized solar cells (DSSC) upon employing multi-wall carbon nanotube (MWCNT) on both working electrode and counter electrode were examined with using EIS, J-V curves and UV-Vis absorption spectrometry. When 0.1 wt% of MWCNT was employed in the $TiO_2$-MWCNT composit on working electrode, the energy conversion efficiency increased about 12.5% compared to the $TiO_2$ only working electrode. The higher light conversion efficiency may attribut to the high electrical conductivity of MWCNT in $TiO_2$-MWCNT composite which improves the electron transport in the working electrode. However, higher amount of MWCNT than 0.1 wt% in the $TiO_2$-MWCNT composite decreases the light conversion efficiency, which is mainly ascribed to the decreased transmittance of light by MWCNT and to the decreased adsorption of dye onto $TiO_2$. The MWCNT employed counter electrode exhibited much lower light conversion efficiency of DSSC than the Pt-counter electrode, while the MWCNT-Pt counter electrode showed similar in light conversion efficiency to that of Pt-counter electrode.
Keywords
dye-sensitized solar cell; carbon nanotube; working electrode; counter electrode; $TiO_2$-MWCNT composite;
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Times Cited By KSCI : 2  (Citation Analysis)
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