Degradation mechanisms of Pt counter electrodes for dye sensitized solar cells

Syrrokostas, G.; Siokou, A.; Leftheriotis, G.; Yianoulis, P.

doi:10.1016/j.solmat.2012.04.021

Cited by 132 publications

(69 citation statements)

References 35 publications

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“…Several degradation mechanisms in the dye (desorption, ligand substitution, isomerisation) [6], poisoning effects or desorption of the electrocatalyst [7], [8] and corrosion of the current grids may affect the performance of a DSC upon ageing.…”

Section: By Brian O'mentioning

confidence: 99%

Thermal Stressing of Dye Sensitized Solar Cells Employing Robust Redox Electrolytes

Perganti

Kontos

Στεργιόπουλος

et al. 2015

Electrochimica Acta

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Section: By Brian O'mentioning

confidence: 99%

Thermal Stressing of Dye Sensitized Solar Cells Employing Robust Redox Electrolytes

Perganti

Kontos

Στεργιόπουλος

et al. 2015

Electrochimica Acta

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“…The improvement by using the corallike TiO 2 nanostructures can be attributed to the larger surface area, which enables more adsorption of CoPC dye molecules and relatively suitable dye loading. It can be seen from Table 1 that the FF values for the prepared DSSCs based on different CEs are slightly higher than that of the most reported ones in the literature (0.6-0.7) [1,14,[48][49][50][51]. This may be attributed to the low recombination rate between photo-excited carriers in the photo-anodes and the triiodide ions in the electrolyte.…”

Section: Resultsmentioning

confidence: 71%

In-situ fabricated transparent conducting nanofiber-shape polyaniline/coral-like TiO2 thin film: Application in bifacial dye-sensitized solar cells

Bahramian

Vashaee

2015

Solar Energy Materials and Solar Cells

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a b s t r a c tDye-sensitized solar cell (DSSC) is the most promising of third generation solar cells for large scale applications due its low cost, flexibility, and scalable manufacturability. However, enhancing the efficiency of the DSSC is still highly desired. In this study, we designed a novel bifacial DSSC based on a transparent Polyaniline (PANI) films as counter electrode (CE) associated with coral-like TiO 2 nanostructured films, which can be used as the photoanode. PANI-based CEs were prepared by a facile in situ polymerization, while coral-like TiO 2 films were chemically synthesized at low temperature through the sol-gel process. Owing to the light irradiation from both the front and the rear sides, it is expected that higher density of dye molecules should be excited. In addition, due to the excellent light scattering of the coal-like TiO 2 and high specific surface area of PANI nanofibers (NFs), more carriers are generated. Both these factors resulted in the increase of the conversion efficiency. The bifacial DSSC fabricated by combining the PANI NFs-based film and the coral-like TiO 2 film in the presence of the expensive N719 dye molecules showed the efficiency of 8.22% corresponding to the both-side irradiation. In comparison, similar cells employing either a cross-linked PANI-or Pt-based CE showed efficiencies of 7.81% and 7.75%, respectively. The results of the similar cells in the presence of the low cost CoPC dye molecules showed efficiencies of 0.29%, 0.22%, and 0.27%, for DSSCs comprised of PANI NFs-, cross-linked PANI-, and Ptbased CEs, respectively. The low fabrication cost as well as the improved light absorption highlights the potential application of the coral-like TiO 2 and PANI NFs-based films in fabrication of bifacial DSSCs.

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“…5b, the photocurrent densities for DSSCs with PtNi 0.75 and Pt decrease by 6.75% and 14.69% over 5 h, respectively. In comparison with the solar cell with Pt electrode [37], the DSSC employing PtNi 0.75 alloy electrode displays enhanced stability. In order to explore potential mechanism for enhanced catalytic activity and stability, the Gibbs energy of the possible dissolving reaction of PtNi 0.75 alloy is calculated [38].…”

Section: Resultsmentioning

confidence: 99%

Cost−effective alloy counter electrodes as a new avenue for high−efficiency dye−sensitized solar cells

Tang

et al. 2015

Electrochimica Acta

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Degradation mechanisms of Pt counter electrodes for dye sensitized solar cells

Cited by 132 publications

References 35 publications

Thermal Stressing of Dye Sensitized Solar Cells Employing Robust Redox Electrolytes

Thermal Stressing of Dye Sensitized Solar Cells Employing Robust Redox Electrolytes

In-situ fabricated transparent conducting nanofiber-shape polyaniline/coral-like TiO2 thin film: Application in bifacial dye-sensitized solar cells

Cost−effective alloy counter electrodes as a new avenue for high−efficiency dye−sensitized solar cells

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