The influence of the metal cation and the filler on the performance of dye-sensitized solar cells using polymer-gel redox electrolytes

Chatzivasiloglou, Evangelia; Στεργιόπουλος, Θωμάς; Kontos, Athanassios G.; Alexis, Nikolaos; Prodromidis, Mamas I.; Falaras, Polycarpos

doi:10.1016/j.jphotochem.2007.05.003

Cited by 47 publications

(22 citation statements)

References 36 publications

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“…According to the same considerations [28] discussed above on V oc , once the electrolyte drops onto the dyed anode, the positive charged added-TiO 2 contacts with the anode TiO 2 , which decreases the electron content in the anode and the V oc of DSSCs decreases [29,30]. Chatzivasiloglou et al [31] reported a similar result that the V oc of the DSSCs decreases with the content of TiO 2 added in PEO electrolyte, which is believed to be due to the adsorption of Li + onto the surface of TiO 2 .…”

Section: Content (Wt%)mentioning

confidence: 91%

Novel agarose polymer electrolyte for quasi-solid state dye-sensitized solar cell

Yang

Zhou

et al. 2011

Journal of Power Sources

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Section: Content (Wt%)mentioning

confidence: 91%

Novel agarose polymer electrolyte for quasi-solid state dye-sensitized solar cell

Yang

Zhou

et al. 2011

Journal of Power Sources

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“…Then, 0.1 M CsI [ 18 ] (Riedel de Haën), 0.02 M resublimed iodine (Merck) and 0.45 M tert-butyl-pyridine (4TBP, Sigma-Aldrich) were added (in that order). These electrolytes were plasticized by the very slow addition of 4.5% w/w of polyethylene oxide (PEO, molecular weight: 2 × 10 6 g mol − 1 , purchased from Sigma-Aldrich).…”

Section: Methodsmentioning

confidence: 99%

“…[ 15 ] The obtained photovoltaic effi ciencies (2.5-4.5%) of the DSCs incorporating such solidifi ed polymer electrolytes were (at the time) among the best reported in literature. [16][17][18] These efforts to incorporate metal oxide nanoparticles between the polymer chains has since motivated a lot of research groups to use similar semiconducting nanostructures (TiO 2 , SiO 2 , carbon nanotubes, graphite etc.) to fi ll various polymer electrolytes.…”

mentioning

confidence: 99%

Enhanced Open‐Circuit Photopotential in Quasi‐Solid‐State Dye‐Sensitized Solar Cells Based on Polymer Redox Electrolytes Filled with Anodic Titania Nanotubes

Στεργιόπουλος

Rozi

Hahn

et al. 2011

Advanced Energy Materials

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Dye-sensitized solar cells (DSCs), are already in the top ten photovoltaic devices attaining the largest overall power-conversion effi ciencies ( > 10% under 1 sun AM1.5G illumination [ 1 ] ), due mainly to their potentially low-cost fabrication, the possibility of transparency and color selectivity, effi cient light absorption by all incident angles and their ability to be integrated into building and automobile applications. [ 2 ] To make the next step towards full commercialization and compete on equal terms with silicon and thin fi lm solar cells, DSCs have to demonstrate enhanced long term stability under thermal and light stress conditions. The most effi cient DSCs utilize a liquid electrolyte consisted of the I − /I 3 − redox couple, dissolved in an organic solvent (e.g., acetonitrile); this kind of volatile solvent (resulting in partial liquid leakage and/or evaporation) is recognized to be the main limiting factor shortening the lifetime of the devices. [ 3 ] To overcome these problems, two alternatives have been proposed: i) the use of solvent-free ionic-liquid-based electrolytes, [ 4 , 5 ] and ii) the application of solidifi ed electrolytes based on organic [6][7][8][9] and inorganic [ 10 ] polymers, nanoparticles, [ 11 , 12 ] and liquid crystals, [ 13 ] attaining maximum effi ciencies on the order of 7-8%. [ 14 ] Following this direction, hybrid composite polymer electrolytes have been prepared by our group in the past: a linear polymer with high viscosity (polyethylene oxide) was used in order to solidify the common liquid electrolytes and a fi ller consisted of a powder of titania nanoparticles was further embodied in the polymer electrolytes to enhance amorphicity. [ 15 ] The obtained photovoltaic effi ciencies (2.5-4.5%) of the DSCs incorporating such solidifi ed polymer electrolytes were (at the time) among the best reported in literature. [16][17][18] These efforts to incorporate metal oxide nanoparticles between the polymer chains has since motivated a lot of research groups to use similar semiconducting nanostructures (TiO 2 , SiO 2 , carbon nanotubes, graphite etc.) to fi ll various polymer electrolytes. [19][20][21][22][23][24][25][26][27][28][29][30][31][32][33] Among others, special mention should be made on recently prepared advanced composite polymer (polyethylene glycol and nafi on) electrolytes using hydrothermally prepared titania nanotubes (NTs) as fi llers. [ 34 , 35 ] In this work, taking advantage of the strong experience in the electrochemical preparation of ordered metal oxide nanostructures, [36][37][38] we have prepared novel nanocomposite polymer electrolytes based on potentiostatically grown nanotubular titania fi llers incorporated into polyethylene oxide matrices. The polymeric electrolyte without a fi ller (used as a reference) presented an overall power conversion effi ciency ( η ) of 4.4%, when incorporated in a DSC. When this electrolyte was fi lled with the nanotubular anodic powder, the effi ciency was increased by more than 18% (reaching values up to 5.4%), mai...

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“…Recently, DSSCs employing quasi-solid polymer electrolytes have been investigated because of their intrinsic advantages such as no solvent leakage and evaporation [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. To date, however, DSSCs employing polymer-based electrolytes have exhibited low cell efficiency.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, it is necessary to increase the ion mobility in the polymer medium to improve cell efficiency. Although many efforts have been made through using new polymers [4,8,9,11,18], inorganic nanofillers [5,10,12,14,19] and small molecule plasticizers [7,9,13,14,17] to increase the ion conductivity, a better understanding of polymer-type electrolytes is required.…”

Section: Introductionmentioning

confidence: 99%

Quasi-solid-state dye-sensitized solar cells employing ternary component polymer-gel electrolytes

Kang

Ahn

Lee

2008

Journal of Power Sources

107

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The influence of the metal cation and the filler on the performance of dye-sensitized solar cells using polymer-gel redox electrolytes

Cited by 47 publications

References 36 publications

Novel agarose polymer electrolyte for quasi-solid state dye-sensitized solar cell

Novel agarose polymer electrolyte for quasi-solid state dye-sensitized solar cell

Enhanced Open‐Circuit Photopotential in Quasi‐Solid‐State Dye‐Sensitized Solar Cells Based on Polymer Redox Electrolytes Filled with Anodic Titania Nanotubes

Quasi-solid-state dye-sensitized solar cells employing ternary component polymer-gel electrolytes

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