Effects of mesoscopic poly(3,4-ethylenedioxythiophene) films as counter electrodes for dye-sensitized solar cells
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
View Archive Info| Field | Value | |
| Title |
Effects of mesoscopic poly(3,4-ethylenedioxythiophene) films as counter electrodes
for dye-sensitized solar cells
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| Creator |
Lee, K.M.
Chiu, W.H. Wei, H.Y. Hu, C.W. Suryanarayanan, V. Hsieh, W.F. Ho, K.C. |
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| Subject |
Electroorganic
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| Description |
Counter electrode coated with chemically polymerized poly(3,4-ethylenedioxythiophene) (PEDOT) in a dyesensitized
solar cell (DSSC) was studied. The surface morphology and the nature of I−/I3
− redox reaction
based on PEDOT film were investigated using Atomic Force Microscopy and Cyclic Voltammetry,
respectively. The performance of the DSSCs containing the PEDOT coated electrode was compared with
sputtered-Pt electrode. We found that the root mean square roughness decreases and conductivity increases
as the molar ratio of imidazole (Im)/EDOT in the PEDOT film increases. The DSSC containing the PEDOT
coated on fluorine doped tin oxide glass with Im/EDOT molar ratio of 2.0, showed a conversion efficiency of
7.44% compared to that with sputtered-Pt electrode (7.77%). The high photocurrents were attributed to the
large effective surface area of the electrode material resulting in good catalytic properties for I3
− reduction.
Therefore, the incorporation of a multi-walled carbon nanotube (MWCNT) in the PEDOT film, coated on
various substrates was also investigated. The DSSC containing the PEDOT films with 0.6 wt.% of MWCNT on
stainless steel as counter electrode had the best cell performance of 8.08% with short-circuit current density,
open-circuit voltage and fill factor of 17.00 mA cm−2, 720 mV and 0.66, respectively.
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| Publisher |
Elsevier B.V.
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| Date |
2010
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cecri.csircentral.net/559/1/2010-140.pdf
Lee, K.M. and Chiu, W.H. and Wei, H.Y. and Hu, C.W. and Suryanarayanan, V. and Hsieh, W.F. and Ho, K.C. (2010) Effects of mesoscopic poly(3,4-ethylenedioxythiophene) films as counter electrodes for dye-sensitized solar cells. Thin Solid Films, 518. pp. 1716-1721. |
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| Relation |
http://cecri.csircentral.net/559/
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