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https://doi.org/10.1016/j.electacta.2013.04.177
Title: | Platinum/polyaniline transparent counter electrodes for quasi-solid dye-sensitized solar cells with electrospun PVDF-HFP/TiO2 membrane electrolyte | Authors: | Peng, S. Li, L. Tan, H. Srinivasan, M. Mhaisalkar, S.G. Ramakrishna, S. Yan, Q. |
Keywords: | Counter electrode Pt/polyaniline hybrid Quasi-solid dye-sensitized solar cell Transparent |
Issue Date: | 2013 | Citation: | Peng, S., Li, L., Tan, H., Srinivasan, M., Mhaisalkar, S.G., Ramakrishna, S., Yan, Q. (2013). Platinum/polyaniline transparent counter electrodes for quasi-solid dye-sensitized solar cells with electrospun PVDF-HFP/TiO2 membrane electrolyte. Electrochimica Acta 105 : 447-454. ScholarBank@NUS Repository. https://doi.org/10.1016/j.electacta.2013.04.177 | Abstract: | Composite films of platinum and polyaniline (Pt/PANI) with different Pt loadings are prepared by chemical reduction and then a spin-coating process on fluorine-doped tin oxide (FTO) substrates. The obtained Pt/PANI transparent counter electrodes are applied in quasi-solid dye-sensitized solar cells (QDSCs) from front and rear light illuminations, using electrospun poly(vinylidenefluoride-cohexafluoropropylene)/ TiO2 (PVDF-HFP/TiO2) as the electrolyte. The analytical results show that the 1.8-nm sized Pt nanoparticles are distributed uniformly in the Pt/PANI film when the Pt loading is 1.5 μg cm-2. Electrocatalytic activity of the Pt/PANI electrode with 1.5 μg cm-2 Pt loading for the I 3 -/I- redox reaction is higher than the conventional sputtered Pt electrode. Furthermore, the mean optical transmittance of the Pt/PANI electrodes is above 60% in the wavelength of 400-800 nm. The optimal QDSC composed of Pt/PANI with 1.5 μg cm-2 Pt loading exhibits power conversion efficiencies of 6.34% and 3.85%, when measured using an AM1.5G solar simulator at 100 mW cm-2 under front and rear light illuminations. The efficiencies are both higher than those of the QDSCs employing the conventional sputtered Pt counter electrode with 8.3 μg cm -2 Pt loading. Moreover, the QDSC exhibits superior long-term stability. These promising results make the potential application of Pt/PANI films as cost-effective, transparent counter electrodes. © 2013 Elsevier Ltd. All rights reserved. | Source Title: | Electrochimica Acta | URI: | http://scholarbank.nus.edu.sg/handle/10635/85554 | ISSN: | 00134686 | DOI: | 10.1016/j.electacta.2013.04.177 |
Appears in Collections: | Staff Publications |
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