influence of acid modification multiwall carbon nanotube counter electrodes on the glass and flexible dye-sensitized solar cell performance
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ID: 200504
2016
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Abstract
Multiwall carbon nanotubes (MWCNTs) were modified by acids (H2SO4 : HNO3) for generating active groups on the nanotube surface. Unmodified- and modified-carbon nanotubes were coated on the conductive glass and conductive plastic substrates by a slurry paste method, and they were used as the counter electrodes (CEs) of dye-sensitized solar cells (DSSCs). Scanning electron microscopy reveals that carbon nanotubes are evenly deposited on the conductive glass. The efficiency of the glass based DSSCs of unmodified- and modified-carbon nanotubes and Pt CEs is ~4.73%, ~5.66%, and ~6.08%, respectively. The efficiency of the plastic based DSSCs of the unmodified- and modified-carbon nanotubes CEs is ~0.80% and ~2.11%, respectively. The voltammogram and electrochemical impedance spectroscopy results suggest that the superior performance of the modified-carbon nanotubes DSSCs is attributable to the high electrocatalytic activity and the low charge-transfer resistance of the modified-carbon nanotubes film over the unmodified-carbon nanotubes film.
| Reference Key |
maiaugree2016internationalinfluence
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|---|---|
| Authors | ;Wasan Maiaugree;Samuk Pimanpang;Wirat Jarernboon;Vittaya Amornkitbamrung |
| Journal | construction and building materials |
| Year | 2016 |
| DOI |
10.1155/2016/2853046
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| URL | |
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