The Effect of Electrolyte on Dye Sensitized Solar Cells Using Natural Dye from Mango (&amp;lt;i&amp;gt;M. indica&amp;lt;/i&amp;gt; L.) Leaf as Sensitizer

Abodunrin, T.J; Obafemi, Olugbenga; Boyo, A. O.; Adebayo, T. A.; Jimoh, R.

doi:10.4236/ampc.2015.56021

Cited by 18 publications

(11 citation statements)

References 19 publications

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“…The slides were of surface resistivity 10 Ω/m 2 . Initial surface preparation was performed by demarcating the ITO using masking tape on an active surface area of 3.14 m 2 as described in our previous studies [3] , [4] , [5] . Each 0.1 g of dye extract was grown on the photoanode by inserting the ITO vertically in the dye solution.…”

Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

Data on the porphyrin effect and influence of dopant ions on Thaumatococcus daniellii dye as sensitizer in dye-sensitized solar cells

2018

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In this work, data on the effect of porphyrin characteristic of UV/VIS absorption of Thaumatococcus daniellii (T. daniellii) dye-sensitized solar cells sensitized with different electrolytes were presented. The influence of dopants from 1 g/100 ml electrolyte: distilled water and applied time difference of 3 min is observed on the photovoltaic characteristics and performance of the deposited thin film. The output efficiency and incident photon to conversion efficiency of T. daniellii dye-sensitized solar cells was acquired and could be further used as a model for designing dye-sensitized solar models as substitute for silicon solar cells

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Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

Data on the porphyrin effect and influence of dopant ions on Thaumatococcus daniellii dye as sensitizer in dye-sensitized solar cells

2018

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“…Owing to the discrepancies previously observed in the modes of dye attachment investigated to date, and with only a few investigations focusing on the involvement of NCS and TBA + in the adsorption, here, we aim to investigate the anchoring modes of N719 by applying the techniques of FTIR and ARXPS. We note that recent studies have indicated an influence on the efficiency of DSSCs upon varying pH of the dye solution, − which may result from changes in the anchoring modes; however, it is our aim to investigate the anchoring modes in cells created using typical construction protocols. The investigation of the anchoring mode through FTIR is quite common.…”

Section: Introductionmentioning

confidence: 99%

Anchoring Modes of Ru-Based N719 Dye onto Titania Substrates

Adhikari,

Gascooke,

Alotabi

et al. 2024

J. Phys. Chem. C

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Dye anchoring plays a vital role in determining cell efficiency and extensively influences the stability of dye-sensitized solar cells (DSSCs). The investigation and characterization of the dye complex adsorption on a TiO 2 substrate are crucial for understanding the sensitization process of the TiO 2 surface and for optimizing the quantum yield of DSSCs. Many dyes used in DSSCs consist of either a carboxylic group or a cyanoacrylic acid group as dye anchors. However, with the growing interest in DSSCs, new dyes with different anchoring groups have been developed and evaluated. The present study investigates the anchoring mode of the dye−TiO 2 system with Fourier transform infrared spectroscopy (FTIR) and angle-resolved X-ray photoelectron spectroscopy (ARXPS). The FTIR results support that the carboxylic group deprotonates and that the COO − anchors to TiO 2 via multiple modes, i.e., bidentate chelating and ester bonds. However, the changes in the features of NCS in FTIR also suggest the partial involvement of the thiocyanate ligand in the dye attachment. In addition, the depth profile obtained from ARXPS indicates that the COO − group is found dominantly at the dye/TiO 2 interface and thus is the main anchoring group for the dye−TiO 2 system. The application of the techniques in understanding anchoring modes is not limited to the investigation of N719 and can be applied to other dye-adsorbed systems of interest.

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“…(2015), fabricated a dye-sensitized solar cells (DSSC) which was mixed with natural mango leaf dye extracts, and studied the effect of electrolyte on properties of fabricated solar cell. The researchers have found that the (DSSC had the least parameter value because of degradation of lupeol at increased temperatures and vigorous acidic medium producing in the filtrate of the adsorbed dye from the TiO2 surface (11). The DSSC showed the highest conversion value of photocurrent density ( J SC ) (1.3 mA/ cm 2 ) at pH 2.58.…”

Section: Introductionmentioning

confidence: 99%

Natural Pigment –Poly Vinyl Alcohol Nano composites Thin Films for Solar Cell

2020

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Solar cells thin films were prepared using polyvinyl alcohol (PVA) as a thin film, with extract of natural pigment from local flower. A concentration of 0.1g/ml of polyvinyl alcohol solution in water was prepared for four samples, with various concentrations of plant pigment (0, 15, 25 and 50) % added to each of the four solutions separately for preparing (PVA with low concentrated dye , PVA with medium concentrated dye and PVA with high concentrated dye ) thin films respectively . Ultraviolet absorption regions were obtained by computerized UV-Visible (CECIL 2700). Optical properties including (absorbance, reflectance, absorption coefficient, energy gap and dielectric constant) via UV- Vis were tested, too. Fourier transform infrared (FTIR) spectrophotometer was employed to test the samples. Thermal analysis of thin films, including melting point (Tm), onset degree, endset degree, and crystallinity% were tested by differential scanning calorimeter (DSC). Three dimensional morphologies of thin films were inspected by atomic force microscopy (ATM). Contact angle also was tested as an index to hydrophilicity. Results proved that the ultraviolet and FTIR absorption increase after adding the natural pigment to PVA thin film, as well as it increases with increasing concentration of natural pigment. DSC analysis revealed an increase of PVA melting point when adding 15% concentration and it decreases with a 50% concentration of pigment. AFM results show an increase in surface roughness, hence the surface bearing index of PVA thin films is inversely proportional to pigment concentration. Contact angle decreases from 46.5° for pure PVA thin film to 44. 8°, 42. 6° and 35.2° after adding (15, 25, and 50)% concentration of natural dye respectively. Optical properties were enhanced by adding the natural dye, hence energy gap decreased from 3 eV for pure PVA to 2.3 eV for the PVA with a high concentrate dye. Dielectric constant increased with increasing concentration of dye, which leads to high polarization of solar cell.

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The Effect of Electrolyte on Dye Sensitized Solar Cells Using Natural Dye from Mango (<i>M. indica</i> L.) Leaf as Sensitizer

Cited by 18 publications

References 19 publications

Data on the porphyrin effect and influence of dopant ions on Thaumatococcus daniellii dye as sensitizer in dye-sensitized solar cells

Data on the porphyrin effect and influence of dopant ions on Thaumatococcus daniellii dye as sensitizer in dye-sensitized solar cells

Anchoring Modes of Ru-Based N719 Dye onto Titania Substrates

Natural Pigment –Poly Vinyl Alcohol Nano composites Thin Films for Solar Cell

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