High temperature stability of dye solar cells

Jiang, Nancy; Sumitomo, Taro; Lee, Timothy J.; Pellaroque, Alba; Bellon, Olivier; Milliken, D.; Desilvestro, Hans

doi:10.1016/j.solmat.2013.04.017

Cited by 68 publications

(62 citation statements)

References 44 publications

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“…Such evolution has been noted previously in the literature on complete devices but without extensive explanation. [15][16][17] We attribute this interfacial electrochemical modification of Pt/electrolyte characteristic to the formation of SEI surrounding the platinum nanoparticles during ageing.…”

Section: Resultsmentioning

confidence: 95%

Consequences of Solid Electrolyte Interphase (SEI) Formation upon Aging on Charge-Transfer Processes in Dye-Sensitized Solar Cells

et al. 2016

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Solid electrolyte interphase (SEI) layers form on sensitized-TiO2 photo-anodes and platinum counter-electrodes when dye-sensitized solar cells (DSSCs) are subjected to an accelerated ageing protocol (e.g. heating at 85 °C in the dark for 500 hours). To understand how this will impact the device operation, electrochemical impedance spectroscopy study showed that the SEI induces an additional electron transfer process from the TiO2 to the electrolyte. This is materialized by the onset of a new charge transfer semi-circle at higher frequencies, predominantly visible under bias voltage similar and above open circuit voltage. Our results emphasized on the detrimental role of the SEI formation on device performance and lifetime.Additionally, ns-transient absorption spectroscopy shows that SEI formation reduces the rate oxidised dye regeneration. We also show that a proportion of the photogenerated holes on the dyes are transferred to the SEI itself. Prolonged ageing duration leads to the electrode's mesoporosity network entirely clogged by the SEI; thus impeding efficient transport of the electrolyte redox couple, also responsible for a further decline in photovoltaic performances.2

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Section: Resultsmentioning

confidence: 95%

Consequences of Solid Electrolyte Interphase (SEI) Formation upon Aging on Charge-Transfer Processes in Dye-Sensitized Solar Cells

et al. 2016

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“…It seems that the last two actually show the best compromise between high efficiencies and stability. The sulfolane-based electrolyte is promising for extreme conditions even though its high viscosity impedes high photocurrent production owing to mass transport limitations [132].…”

Section: Dye-sensitized Solar Cells Principle: Role and Progress In Tmentioning

confidence: 99%

“…This was achieved by using either BN [134] or alternatively gelified MPN-based electrolyte [135]. Dyesol recently reported its HSS electrolyte passing even 95 ∘ C/dark accelerating test for 1000 hours in combination with N719 dye with efficiencies in the range of 5% under standard illumination conditions (A.M. 1.5 G) [132].…”

Section: Dye-sensitized Solar Cells Principle: Role and Progress In Tmentioning

confidence: 99%

“…Since the seminal publication by Graetzel, only very few articles have reported stability at higher temperatures, requiring, as it seems, more viscous liquids to alleviate sealing issues, as, for instance, gelified electrolyte or solvent-free ionic liquids [140][141][142][143]. Apart from the very few reports announcing this achievement, still no consensual publications are actually passing the challenging threshold of 1000 hours at 85 ∘ C in dark condition with efficiencies above 5% [132,144,145]. Nevertheless, this assessment emphasizes on the one hand the high credibility of DSC for larger scale applications, but on the other hand, it also point out the important gap to fill in between the champion efficiencies and the stable devices for which this gap closing will require more focus on the understanding of the ageing mechanisms leading to the cell failure, and, in a next step to design specifically more Advances in Chemistry 9 robust and better performing molecules (i.e., ligand, solvent, additive(s) in electrolyte, etc.…”

Section: Stable Performances Were Reported Over 2000 Hours At 60mentioning

confidence: 99%

“…This has been clearly highlighted from the work led at Dyesol by Jiang et al [132,156]. The authors compared -butyrolactone, 3-methoxypropionitrile, and the socalled nitrile-free solvent HSS.…”

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confidence: 99%

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A Review on Current Status of Stability and Knowledge on Liquid Electrolyte-Based Dye-Sensitized Solar Cells

Sauvage

2014

Advances in Chemistry

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The purpose of this review is to gather the current background in materials development and provide the reader with an accurate image of today's knowledge regarding the stability of dye-sensitized solar cells. This contribution highlights the literature from the 1970s to the present day on nanostructured TiO 2 , dye, Pt counter electrode, and liquid electrolyte for which this review is focused on.

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