Effect of electrolyte conductivity, co-additives and mixed cation iodide salts on efficiency enhancement in dye sensitized solar cells with acetonitrile-free electrolyte

Dissanayake, M.A.K.L.; Umair, K.; Senadeera, G.K.R.; Kumari, J.M.K.W.

doi:10.1016/j.jphotochem.2021.113308

Cited by 16 publications

(9 citation statements)

References 50 publications

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“…Figure 4(a) shows the Electrochemical Impedance Spectra (EIS) of the DSSCs fabricated with bare SnO 2 (x=0) and AuNP@SnO 2 photoanodes. As already discussed (Dissanayake et al, 2021), each Nyquist plot in Figure 4(a) shows the series resistance (R S ) and two semicircles (R CT1 and R CT2 ). R S is the external series resistor which occurs in the high frequency region.…”

Section: Eis Characterizationmentioning

confidence: 81%

Efficiency enhancement in SnO<sub>2</sub> based dye-sensitized solar cells by incorporating plasmonic gold nanoparticles

2021

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Section: Eis Characterizationmentioning

confidence: 81%

Efficiency enhancement in SnO<sub>2</sub> based dye-sensitized solar cells by incorporating plasmonic gold nanoparticles

2021

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“…In contrast, E10 showed no improvement of FF while also suffering a severe loss in photocurrent parameters, resulting in the lowest efficiency increase of 0.55%, less than a third of the average of the tested electrolytes. This unusual interaction warranted further study, which prompted us to analyze the test devices with electrochemical impedance spectroscopy, in order to investigate their interfacial processes [ 50 , 51 ].…”

Section: Resultsmentioning

confidence: 99%

Effect of Iodide-Based Organic Salts and Ionic Liquid Additives in Dye-Sensitized Solar Cell Performance

et al. 2022

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The use of ionic liquid and organic salts as additives for electrolyte systems in dye-sensitized solar cells have been widely described in recent years. The tunability of their physical-chemical properties according to the cation–anion selection contributes toward their high efficiencies. For this purpose, several iodide-based organic salts including imidazolium, picolinium, guanidinium and alkylammonium cations were tested using acetonitrile/valeronitrile electrolytes and their photovoltaic parameters were compared. A best efficiency of 4.48% (4.15% for the reference) was found for 1-ethyl-2,3-dimethylimidazolium iodide ([C2DMIM]I) containing electrolyte, reaffirming the effectiveness of these additives. 4-tertbutylpyridine was included into the formulation to further improve the performance while determining which iodide salts demonstrate the highest synergy with this additive. [C2DMIM]I once again proved to be the superior additive, achieving an efficiency of 6.48% (6% for the reference). Electrochemical impedance spectroscopy was employed to elucidate the effects of the various additives, demonstrating the relevance of the counter electrode resistance on device performance. Finally, several computational descriptors for the cationic structures were calculated and correlated with the photovoltaic and resistance parameters, showing that properties related to polarity, namely relative positive charge, molecular polarizability and partition coefficient are in good agreement with the counter-electrode resistance.

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“…GuSCN accumulates on the TiO2 surface and passivates the TiO2 surface from recombination [22]. This leads to a better electron injection rate from the dye and, thus an increase in efficiency [23,24].…”

Section: Performance Enhancement With Tbp and Guscnmentioning

confidence: 99%

Efficiency enhancement of dye-sensitized solar cell with PVdF-HFP:MPII:NaI quasi-solid-state electrolyte

Zakaria

Saaid²,

Raffi³

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Quasi-solid-state polymer electrolyte (QSSPE) based on poly(vinylidene fluoride-co-hexafluoropropylene) (PVdF-HFP) was prepared using sodium iodide (NaI) salt, 1-methyl-3-propylimidazolium iodide (MPII) ionic liquid, propylene carbonate (PC) and 1,2-dimethoxyethane (DME) plasticizers. This paper discusses the effects of using a binary mixture of large (MPII) and small (NaI) cation alkaline salts on enhancing the performance of DSSCs with gel polymer electrolytes. The amount of NaI was varied while the other components were kept constant to study the dependence of dye-sensitized solar cell (DSSC) performance on NaI amount. The incorporation of NaI in PVdF-HFP-MPII-PC-DME has enhanced the efficiency of DSSC. DSSC with 0.6 M MPII and 0.4 M NaI showed the highest efficiency of 4.16 % and short circuit current density (J sc) of 13.63 mAcm−2. Additionally, the roles of TBP and GuSCN as co-additives in the electrolytes were also discussed in this paper. The presence of 4-tert-butylpyridine (TBP) and guanidine thiocyanate (GuSCN) further enhanced the efficiency from 4.16 to 6.95 %.

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Effect of electrolyte conductivity, co-additives and mixed cation iodide salts on efficiency enhancement in dye sensitized solar cells with acetonitrile-free electrolyte

Cited by 16 publications

References 50 publications

Efficiency enhancement in SnO<sub>2</sub> based dye-sensitized solar cells by incorporating plasmonic gold nanoparticles

Efficiency enhancement in SnO<sub>2</sub> based dye-sensitized solar cells by incorporating plasmonic gold nanoparticles

Effect of Iodide-Based Organic Salts and Ionic Liquid Additives in Dye-Sensitized Solar Cell Performance

Efficiency enhancement of dye-sensitized solar cell with PVdF-HFP:MPII:NaI quasi-solid-state electrolyte

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