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Conducting polymer/in-situ generated platinum nanoparticle nanocomposite electrodes for low-cost dye-sensitized solar cells

Title
Conducting polymer/in-situ generated platinum nanoparticle nanocomposite electrodes for low-cost dye-sensitized solar cells
Authors
Woo, SunghoLee, Sang-JuKim, Dae-HwanKim, HwajeongKim, Youngkyoo
DGIST Authors
Woo, SunghoKim, Dae-Hwan
Issue Date
2014-01-10
Citation
Electrochimica Acta, 116, 518-523
Type
Article
Article Type
Article
Keywords
Conducting PolymersCostsCounter ElectrodeCounter ElectrodesDye-Sensitized Solar CellElectric ResistanceElectrodesIn-Situ SynthesisNanocompositeNanocompositesNanoparticlesPEDOT:PSSPhotoelectrochemical CellsPlatinumPt NanoparticlesSolar CellsSynthesis (Chemical)
ISSN
0013-4686
Abstract
Here we report new low-cost nanocomposite counter electrodes for dye-sensitized solar cells (DSSCs), which were prepared by in-situ generation of platinum (Pt) nanoparticles inside poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) solutions at room temperature. The Pt nanoparticles (Ptnp) were evenly dispersed in the PEDOT:PSS films and their size was 20∼40 nm. The PEDOT:PSS-Ptnp films were well coated on substrates, and their optical transmittance was slightly better than conventional thermally-reduced Pt electrode. The short circuit current density of DSSCs with the PEDOT:PSS-Ptnp films was almost comparable to that with the conventional Pt film. The thickness control experiment disclosed that the series resistance of the PEDOT:PSS-Ptnp films is mainly responsible for the low fill factor. We found that the Ptnp was enriched on the surface of the nanocomposite films when the spin-coating speed was high, which has been assigned as an additional reason for the improved device performance. Hence further improvement in device performance is expected by employing high conductivity PEDOT:PSS materials. Finally, we expect that the present method can contribute to the fabrication of low-cost DSSCs using flexible plastic film substrates at low temperatures. © 2013 Elsevier Ltd.
URI
http://hdl.handle.net/20.500.11750/5270
DOI
10.1016/j.electacta.2013.10.210
Publisher
Elsevier Ltd
Related Researcher
Files:
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Collection:
Convergence Research Center for Solar Energy1. Journal Articles


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