Effect of cation size on the performance of dye sensitized nanocrystalline TiO2 solar cells based on quasi-solid state PAN electrolytes containing quaternary ammonium iodides

Bandara, T M W J; Jayasundara, W. J. M. J. S. R.; Dissanayake, M.A.K.L.; Furlani, Maurizio; Albinsson, Ingvar; Mellander, Bengt-Erik

doi:10.1016/j.electacta.2013.07.089

Cited by 68 publications

(41 citation statements)

References 18 publications

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“…This significant enhancement of V oc with added Pr 4 NI, an iodide with relatively larger cation, can be attributed to the decrease of the recombination of electrons in the conduction band of TiO 2 with I 3 − in the electrolyte and to the shift of the resulting conduction band due to the cation adsorption by TiO 2 . A similar drop in V oc due to the large size cations, such as Pr 4 N + in the electrolyte in mixed cation systems has been reported by several other groups [11,17,20,22,26].…”

Section: Solar Cell Characterizationmentioning

confidence: 65%

“…Thus, the highest efficiency of 3.48% for quasi-solid state PECSC series containing unary salts was given by the cell containing CsI [17]. Another study by our group was focused on finding the best salt candidate out of the quaternary ammonium (ammonium, tetraethylammonium, tetrapropylammonium, tetrabutylammonium, tetrapentylammonium, and tetrahexylammonium) iodide series for PECSCs [11]. Out of these salts incorporated into plasticized, PAN-based polymer electrolytes, the best solar cell efficiency was exhibited by tetrapropylammonium iodide-containing cell.…”

Section: Counterion Effects Of Single Cation Iodide Salts In Quasi-somentioning

confidence: 99%

“…Although, at present, these liquid electrolyte-based solar cells have reached an efficiency of about 14% [5], and quasi-solid state configuration have attracted much attention due to their better stability, non-flammability, negligible vapor pressure, and simpler cell preparation techniques [6][7][8][9]. Although the performance of dye-sensitized PECSCs is largely governed by the charge transport and the nature of the ions in the electrolyte [10][11][12], detailed studies of these aspects are lacking in the literature.…”

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confidence: 99%

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Dependence of solar cell performance on the nature of alkaline counterion in gel polymer electrolytes containing binary iodides

Bandara

Fernando

Furlani

et al. 2017

J Solid State Electrochem

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Performance of dye-sensitized nano-crystalline TiO 2 thin film-based photo-electrochemical solar cells (PECSCs) containing gel polymer electrolytes is largely governed by the nature of the cation in the electrolyte. Dependence of the photovoltaic performance in these quasi-solid state PECSCs on the alkaline cation size has already been investigated for single cation iodide salt-based electrolytes. The present study reports the ionic conductivity dependence on the nature of alkaline cations (counterion) in a gel polymer electrolyte based on binary iodides. Polyacrylonitrile-based gel polymer electrolyte series containing binary iodide salts is prepared using one of the alkaline iodides (LiI, NaI, KI, RbI, and CsI) and tetrapropylammonium iodide (Pr 4 NI

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Section: Solar Cell Characterizationmentioning

confidence: 65%

Section: Counterion Effects Of Single Cation Iodide Salts In Quasi-somentioning

confidence: 99%

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confidence: 99%

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Dependence of solar cell performance on the nature of alkaline counterion in gel polymer electrolytes containing binary iodides

Bandara

Fernando

Furlani

et al. 2017

J Solid State Electrochem

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“…LEs are volatile and may leak [24,25]. This will cause the electrode to corrode and the dye to decompose in the medium [26,27]. On top of these, sealing and stability problems are also associated with LEs [28,29].…”

Section: Progress and Developments In Ionic Liquidsmentioning

confidence: 99%

Ionic Liquid Enhancement of Polymer Electrolyte Conductivity and their Effects on the Performance of Electrochemical Devices

Yusuf¹,

Yahya²,

Arof³

2017

Progress and Developments in Ionic Liquids

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Ionic liquids (ILs) are molten salts at ambient temperature and consist of poorly coordinating cations and anions. They have good electrical conductivity with a wide voltage window and high thermal stability, but negligible vapor pressure. ILs can enhance ionic conductivity when added to polymer electrolytes. Conductivity enhancement is due to the additional ions supplied by the IL, the plasticizing nature of the IL and the low viscosity that facilitates ion mobility. The plasticizing nature of ILs softens the polymer chain giving rise to easier polymer segmental motion. Increase in polymer segmental motion implies that IL can increase amorphousness of a polymer electrolyte (PE). This article discusses the involvement of ionic liquid as electrolytes in selected devices, namely dye sensitized photovoltaics, batteries, fuel cells and supercapacitors.

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“…Several gel polymer systems have been tried out in order to prepare efficient and stable quasi solid state DSSCs (Bella and Bongiovanni, 2013;Shen et al, 2008;Bandara et al, 2013). In a study to determine the best single alkaline salt suitable for PAN based gel polymer electrolytes, CsI have shown higher DSSC performance (Bandara et al,, 2016).…”

Section: Introductionmentioning

confidence: 99%

N719 and N3 dyes for quasi-solid state dye sensitized solar cells - A comparative study using polyacrylonitrile and CsI based electrolytes

et al. 2016

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Dye sensitized solar cells offer a low cost alternative technology for solar energy harvesting. However, there are long term stability issues connected with these cells due to the liquid electrolytes normally used. Gel or solid polymer electrolytes which do not contain volatile solvents have been used in this investigation in order to alleviate these problems. Two types of solar cells were assembled using a double layered TiO 2 film sensitized with two types of dye sensitizers, namely N719 (Ruthenizer 535-bisTBA) and N3 (Ruthenizer 535) in order to compare their performance. Quasisolid-state electrolytes based on PAN (polyacrylonitrile) as the host polymer and CsI as the iodide salt were prepared by incorporating ethylene carbonate (EC) and propylene carbonate (PC) as plasticizers. The conductivity of the electrolyte was further improved by adding tetrapropylammonium iodide (Pr 4 NI), 1-methyl 3-propyl imidazolium iodide (MPII) and 4-tert-butylpyridine (4TBP). The incorporation of these additives resulted in 17% enhancement in ionic conductivity. This improved electrolyte was used to fabricate the solar cells with N3 and N719 dyes. The efficiency of the N3 dye based solar cell was 3.85% whereas the efficiency of the N719 dye based solar cell was 4.14% representing a significant efficiency enhancement by 7.53% by the N719 dye. In addition, due to additives the solar cell efficiency has enhanced by 19% compared to the solar cell without any additive.

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Effect of cation size on the performance of dye sensitized nanocrystalline TiO2 solar cells based on quasi-solid state PAN electrolytes containing quaternary ammonium iodides

Cited by 68 publications

References 18 publications

Dependence of solar cell performance on the nature of alkaline counterion in gel polymer electrolytes containing binary iodides

Dependence of solar cell performance on the nature of alkaline counterion in gel polymer electrolytes containing binary iodides

Ionic Liquid Enhancement of Polymer Electrolyte Conductivity and their Effects on the Performance of Electrochemical Devices

N719 and N3 dyes for quasi-solid state dye sensitized solar cells - A comparative study using polyacrylonitrile and CsI based electrolytes

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