Synergistic role of aluminium sulphate flocculation agent as bi-functional dye additive for Dye-Sensitized Solar Cell (DSSC)

Shahrul, A.M.; Mamat, Mohamad Hafiz; Adilah, MY. Syarifah; Osman, Nafisah; Hamzah, Irni Hamiza; Yusnita, M. A.; Soh, Zainal Hisham Che

doi:10.1016/j.ijleo.2022.168945

Cited by 5 publications

(3 citation statements)

References 49 publications

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“…In this study, the highest efficiency of the MK cell with 0.47% of PCE is seen to be attributed to the larger short-circuit current induced by appropriate dye adsorption and less back recombination witnessed by OCVD measurement (Figure 5 (b)). In other words, increasing dye-loading leads to higher DSSC photocurrent and, as a result, higher efficiency [25,26].…”

Section: 4 Photovoltaic Characteristicsmentioning

confidence: 99%

Mitragyna Speciosa Dye Sensitiser as the Light-Harvesting Molecules for Dye-Sensitised Solar Cells

Azlina

Mamat²,

Soh³

et al. 2022

Jurnal Teknologi

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In this study, natural dye sensitisers derived from ketum (Mitragyna speciosa-MS), spinach (Spinacia oleracea-SO), curry (Murraya koenigii-MK), papaya (Carica papaya-CP), and henna (Lawsonia inermis-LI) were investigated for dye-sensitised solar cells (DSSCs). Ultraviolet-Visible Spectroscopy (UV-Vis), Fourier Transform Infrared spectroscopy (FTIR), Open-Circuit Voltage Decay (OCVD) and Current to Voltage (I-V) were used to analyse the natural dye and the fabricated DSSC. It was observed that all dye solutions contain the majority of important functional groups of chlorophyll-based sensitisers, which is crucial for the dye-to-TiO2 (Titanium (II) Oxide) attachment, making them suitable sources of energy harvesting pigments. In this regard, the dye pH and chemical bonding of the respective dyes play a significant role that contribute to the overall performance of the DSSCs. It was discovered that a dye based on MK provided the best DSSC performance. This is because MK-based dye has higher content of functional groups, an optimal pH, and the slowest properties of back electron recombination among the OCVD measurements. Because of the combination of these properties, the open-circuit voltage (VOC), short-circuit current density (JSC), and power conversion efficiency (PCE) values have been determined to be 0.58 V, 2.48 mA/cm2, and 0.47%, respectively.

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Section: 4 Photovoltaic Characteristicsmentioning

confidence: 99%

Mitragyna Speciosa Dye Sensitiser as the Light-Harvesting Molecules for Dye-Sensitised Solar Cells

Azlina

Mamat²,

Soh³

et al. 2022

Jurnal Teknologi

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“…The IPCE is a measure of how much the cell efficiency can convert monochromatic light into electrical current and it is related to the capacity of the dye to absorb incident photons (Shahrul AM at al., 2022). Overall, the IPCE can be defined with the number of electrons generated by light to an electrical circuit divided by the number of incident photons and calculated through equation 2, where λ (nm) represents the wavelength of incident wave (Shahrul AM at al., 2022).…”

Section: Electrical Characterization Of the Solar Cells (Dsscs)mentioning

confidence: 99%

Effect of the Performance of Lignin Into the Matrix of the TiO2 with Application on DSSCs

Teixeira,

Nunes,

Pinho

et al. 2022

Floresta Ambient.

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Founding new materials and structures for solar cells is a challenge in the photovoltaic field. This work evaluated the effect of the lignin in the photovoltaic activity by compounding with TiO 2 /lignin as photoanode for the dye sensitized solar cells (DSSC's). Hybrid films (TiO 2 /lignin) with different concentrations of lignin (5, 10 and 15%) were deposited by spin coating over commercial TiO 2 thin films. The cells were sandwich assembled. The characterizations were done through analysis of absorbance, band gap, x-ray diffraction, morphological and electrical. The lignin at 15% reduced the TiO 2 band gap from 3.66 to 2.84 eV, favoring the short current density to 11.06 mA/cm 2 and efficiency of 4.65%, an increase of 103.95% compared to the TiO 2 structure without lignin.

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“…From ancient times, Mesoamerican cultures have used certain compounds to stabilize color in fabrics such as cotton, wool, and leather; 12,13 they found that controlling the interaction between the dye and the fabric, the lifetime can be increased; this interaction is carried out through the use of polyvalent metal ions which anchor the dye with the substrate to stabilize it; commonly used metal ions are Zn 2+ , Sn 2+ , and Al 3+ . 14,15…”

Section: Introductionmentioning

confidence: 99%

Effect of ions added by mordant and brightener on the signal structure and energy storage properties of natural dye-based DSSCs

Vargas,

Rivera-Vargas,

Rodriguez

2024

Journal of Chemical Research

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It has been observed experimentally that the output voltage profiles are exponential of two types: rising or decaying; the structure of these profiles is controlled by the mobility of charges: ions and electrons. A comparison between the arrival times of electrons at electrode τe, and ions at double-layer τi, allows determining the shape of these signals. The electrons produced by the photon–dye interaction reach the cathode increasing the output voltage. The ions in the electrolyte are moved by the charge on the electrodes forming the electrical double layer; these ions reduce the output voltage: electrons and ions produce opposite effects. These two charge accumulations produce double layers on both sides of the electrode–electrolyte interface forming double-layer capacitors. The numerical values of several cell parameters (energy, electric field, charge density, capacitance) were estimated, and it was found that they depend on κ; the inverse of the thickness of the double layer λ = κ−1; because κ is a large number, double-layer capacitors are suitable for storing large amounts of energy which is associated with chemical capacitance Cμ. Two dyes were used: brazilwood and cochineal, Al3+ as a mordant, and Na+-metasilicate as brightener. A model was included to describe and fit oscillations in the voltage profiles that appear due to an abrupt illumination. An expression was obtained for Cμ as a function of the voltage.

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Synergistic role of aluminium sulphate flocculation agent as bi-functional dye additive for Dye-Sensitized Solar Cell (DSSC)

Cited by 5 publications

References 49 publications

Mitragyna Speciosa Dye Sensitiser as the Light-Harvesting Molecules for Dye-Sensitised Solar Cells

Mitragyna Speciosa Dye Sensitiser as the Light-Harvesting Molecules for Dye-Sensitised Solar Cells

Effect of the Performance of Lignin Into the Matrix of the TiO2 with Application on DSSCs

Effect of ions added by mordant and brightener on the signal structure and energy storage properties of natural dye-based DSSCs

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