Chlorophyll as sensitizer in I−/I3−-based solar cells with quasi-solid-state electrolytes

Hassan, H. C.; Abidin, Zamri Zainal; Careem, M.A.; Arof, A. K.

doi:10.1177/0954008314540310

Cited by 22 publications

(14 citation statements)

References 14 publications

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“…Consequently, lowering of the Fermi level of TiO 2 is less, resulting in high value of V oc . Similar higher values of V oc with salts of larger cations in the electrolytes have been reported by other researchers …”

Section: Resultssupporting

confidence: 91%

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Characterization of PMA–TPAI and PVAc–TPAI solid polymer electrolytes and application in dye‐sensitized solar cell

Azmar

Rozana

Winie

2018

J of Applied Polymer Sci

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Poly(methyl acrylate) (PMA)-tetrapropylammonium iodide (TPAI) and poly(vinyl acetate) (PVAc)-TPAI solid polymer electrolytes were prepared by solution casting method. DSC, FTIR, and conductivity results are reported. TPAI interacts with PMA and PVAc to form PMA-TPAI and PVAc-TPAI complexes. Formation of PMA-TPAI and PVAc-TPAI complexes are supported by the DSC and FTIR studies. Linear relationship for the dependence of glass-transition temperature, T g , on salt concentration allows the estimation of the complexation extent between polymer and salt. A greater extent of complexation for PMA with TPAI is observed and correlated with the FTIR results. The conductivities achieved at 15 wt % of TPAI for PMA and PVAc are 2.6 × 10 −11 and 1.3 × 10 −11 S cm −1 , respectively. Higher dielectric constant and lower T g of PMA result in higher number and mobility of ions, which lead to higher conductivity in accordance with σ = enμ. All-solid-state dye-sensitized solar cells (DSSCs) were assembled with PMA-TPAI and PVAc-TPAI electrolytes. DSSC efficiencies achieved for PMA and PVAc are 2.41% and 2.05%, respectively. Better performance of DSSC with PMA electrolyte is attributed to higher short-circuit current density, J sc , and lower recombination loss. Lower J sc , higher recombination loss, and degradation of counter electrode are the reasons for DSSC degradation.

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Section: Resultssupporting

confidence: 91%

“…Iodide conductivity is reflected in the value of J sc . Thus, higher value of J sc with PMA electrolyte can be attributed to higher iodide conductivity of the electrolyte due to higher number and mobility of free I − anions (cf.…”

Section: Resultsmentioning

confidence: 99%

Characterization of PMA–TPAI and PVAc–TPAI solid polymer electrolytes and application in dye‐sensitized solar cell

Azmar

Rozana

Winie

2018

J of Applied Polymer Sci

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“…Table 4 gives information about the calculated efficiency (η%) for some systems reported in the literature that include binary salts [ 65 , 66 , 67 , 68 , 69 , 70 ]. In comparison, the value of efficiency (η%) of this work is close to some of these reports.…”

Section: Resultsmentioning

confidence: 99%

Characteristics of Dye-Sensitized Solar Cell Assembled from Modified Chitosan-Based Gel Polymer Electrolytes Incorporated with Potassium Iodide

et al. 2020

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In the present work, phthaloyl chitosan (PhCh)-based gel polymer electrolytes (GPEs) were prepared using dimethylformamide (DMF) as a solvent, ethyl carbonate (EC) as a co-solvent, and a set of five quaternaries of potassium iodide (KI) as a doping salt, which is a mixed composition of iodine (I2). The prepared GPEs were applied to dye-sensitized solar cells (DSSC) to observe the effectiveness of the electrolyte, using mesoporous TiO2, which was sensitized with N3 dye as the sensitizer. The incorporation of the potassium iodide-based redox couple in a polymer electrolyte is fabricated for dye-sensitized solar cells (DSSCs). The number of compositions was based on the chemical equation, which is 1:1 for KI:I2. The electrical performance of prepared GPE systems have been assessed using electrical impedance spectroscopy (EIS), and dielectric permittivity. The improvement in the ionic conductivity of PhCh-based GPE was observed with the rise of salt concentration, and the maximum ionic conductivity (4.94 × 10−2 S cm−1) was achieved for the 0.0012 mol of KI:I2. The study of dielectric permittivity displays that ions with a high dielectric constant are associated with a high concentration of added ions. Furthermore, the gel polymer electrolyte samples were applied to DSSCs to detect the conversion effectiveness of the electrolytes. For electrolytes containing various content of KI:I2 the highest conversion efficiency (η%) of DSSC obtained was 3.57% with a short circuit current density (Jsc) of 20.33 mA cm−2, open-circuit voltage (Voc) of 0.37 V, fill factor (FF) of 0.47, as well as a conductivity of 2.08 × 10−2 S cm−1.

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“…Solar cell parameters, under the irradiation of 1000 Wm -2 such as open circuit voltage (Voc), and short current density (Jsc) were measured and the fill factor (ff) and efficiency () were calculated using following formula, (15) (16) where Jmax and Vmax are the current density and voltage at maximum power output. Iodide conductivity is reflected in the value of Jsc (Hassan et al 2014;Mathew et al, 2013). Thus, higher value of Jsc at 5 wt.% of BMII can be attributed to higher iodide conductivity of the electrolyte due to higher number and mobility of free Ianions.…”

Section: Dssc Performancementioning

confidence: 99%

Development of pma/pvac-tpai-bmii solid polymer electrolytes for application in dye sensitized solar cell

Azmar

Winie

2018

E3S Web Conf.

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Electrolyte film of poly(methyl acrylate) (PMA) and poly(vinyl acetate) (PVAc) with composition of 90:10 and 20 wt.% of tetrapropyl ammonium iodide (TPAI) at different of 1-butyl-3- methyl imidazoliumiodide (BMII) concentration were prepared by solution casting technique. Highest conductivities achieve at 5wt.% of BMII is 1.2 x 10-11 S cm-1. Effects of temperature of this sample on the dielectric properties was studied by impedance spectroscopy. The dielectric constant, εr and dielectric loss, εi increased with increasing temperature. Charge carrier relaxation time was extracted from the electrical modulus spectra. It was found that the relaxation time decreased with temperature. The ac conductivity was observed to obey the Jonscher’s Universal Power Law. The correlated barrier hopping model (CBH) was used to interpret the conduction mechanism of the present electrolyte system. Electrolyte films were sandwiched between titanium dioxide photoanode and platinum counter electrode for dye-sensitized solar cells (DSSCs) assembly. The solar cell with 5wt.% showed highest efficiency of 4.62% with maximum short circuit current density(Jsc) of 10.04 mAcm-2, open circuit voltage (Voc) 0.70 V and fill factor, ff of 66.04%.

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Chlorophyll as sensitizer in I⁻/I₃⁻-based solar cells with quasi-solid-state electrolytes

Cited by 22 publications

References 14 publications

Characterization of PMA–TPAI and PVAc–TPAI solid polymer electrolytes and application in dye‐sensitized solar cell

Characterization of PMA–TPAI and PVAc–TPAI solid polymer electrolytes and application in dye‐sensitized solar cell

Characteristics of Dye-Sensitized Solar Cell Assembled from Modified Chitosan-Based Gel Polymer Electrolytes Incorporated with Potassium Iodide

Development of pma/pvac-tpai-bmii solid polymer electrolytes for application in dye sensitized solar cell

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