Tailoring of extraction solvent of Ixora coccinea flower to enhance charge transport properties in dye-sensitized solar cells

Lim, Andery; Damit, Dk Nur Fhatihah Binti Pg; Ekanayake, Piyasiri

doi:10.1007/s11581-015-1489-9

Cited by 16 publications

(13 citation statements)

References 34 publications

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“…It consists of two peaks: one peak at a mid-frequency and the other at high-frequency region which corresponds to the effective lifetime of electrons on the TiO 2 /dye/electrolyte interface and the effective lifetime of electron on the Pt counter electrode, respectively. The peak frequencies are inversely proportional to electron life time [25]. Since the frequency at the high-frequency region is related to the charge transfer at the interface of electrolyte/Pt, the focus is on the characteristic peak at midfrequency region and the values are 194.8, 229.5, 218.1, and 236.4 Hz for O. dillenii, T. indica, mixture dye, and layer by layer co-sensitization solar cells, respectively.…”

Section: Electrochemical Impedance Spectroscopy (Eis) Analysismentioning

confidence: 99%

“…Anthocyanin dye was extracted from Ixora Coccinea using 6 different solvents like absolute ethanol, 70 % ethanol, acetone, dimethylformamide, dimethyl sulfoxide, and water. The dye extracted using 70 % ethanol helps the device to achieve high electron density that leads to better efficiency of 0.50 % [25]. The effect of co-pigments like malic acid and ascorbic acid in anthocyanin dye from Mangosteen pericarp was studied by Munawaroh et al The co-pigmentation helped to protect the color retention of anthocyanin from degradation improving the efficiency from 0.19 % for anthocyanin to 0.30 % for anthocyanin ?…”

Section: Introductionmentioning

confidence: 99%

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Betalain and anthocyanin dye-sensitized solar cells

Ramamoorthy

Radha²,

Maheswari³

et al. 2016

J Appl Electrochem

104

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In the present work, the mechanism behind the functioning of the eco-friendly dye-sensitized solar cell was explored. Dye-sensitized solar cells were fabricated using natural dyes extracted from common pear (Opuntia dillenii) and red tamarind (Tamarindus indica), and 1:1 mixture. Betalain and anthocyanin were identified as the main pigments that sensitize the semiconductor TiO 2 film. The best conversion efficiency of 0.47 % was achieved from betalain dyes and 0.14 % from anthocyanin dyesensitized solar cell [under standard Air Mass 1.5 illumination (85 mW cm -2 )]. The mixture of dye (1:1 mixture) adsorbed onto TiO 2 exhibited an efficiency of 0.20 %. The light absorption behavior of extracted dyes was studied using ultraviolet-visible analysis. The influence of the binding nature of the dyes with TiO 2 surface on the efficiency of the solar cells was analyzed through Fourier transform infra-red analysis. The electrochemical impedance spectroscopy was used to find out the internal charge transfer resistance of the cells. The device incident photonto-current efficiency was obtained from 5 to 25 % for different natural dyes and found to coincide with the photocurrent-voltage characteristics and electrochemical impedance spectroscopy analysis. Graphical Abstract

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Section: Electrochemical Impedance Spectroscopy (Eis) Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Betalain and anthocyanin dye-sensitized solar cells

Ramamoorthy

Radha²,

Maheswari³

et al. 2016

J Appl Electrochem

104

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“…The uniform distribution of the sensitizing dye through the DSSC lm is an important parameter to study [22]. In order to investigate the betanin dye distribution through the prepared lms, we opted here to measure the color difference ΔE at equidistant points in the prepared Dye_TiO 2 lms sensitized under CV and US method.…”

Section: Effect Of the Extraction Solvent On The Extraction E Ciency mentioning

confidence: 99%

Potential of Betanin Natural Dye for Solar Cells Application

Hamadi

2020

Preprint

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Background: A photovoltaic cell, or solar cell, is an electronic component which, exposed to light, produces electricity thanks to the photovoltaic effect. Organic photovoltaic cells are photovoltaic cells of which at least the active layer consists of organic molecules. It has a yield of at least 15%. The future prospects of the research for solar cells application has required for the development in the field.Main body: Dye-sensitized solar cells are considered to be promising candidates for low-cost solar energy harvesting using sustainable and environmentally friendly materials. In general, solar cells sensitized to dyes consist of three parts: TiO2 sensitized to the photoanode dye with porous film on a transparent conductive glass, an electrolyte solution penetrating through the TiO2 anode film, and the conductive oxide transparent platinum glass as counter electrode.Conclusion: In this work, betanin dye was extracted from mature red fruits of Opuntia ficus indica and purified with fractional crystallization protocol using an 8:2 (v/v) ratio of ethyl acetate/ethanol. TiO2_films with different thickness values have been prepared CV and US sensitization of TiO2_films using betanin dye prove an enhancement on the uniformity distribution of the dye on the film in case of US method. Emission spectra of Dye_TiO2 films have been measured and show a hyperchromic shift of the emission intensity with the increase of the thickness due to the augmentation of betanin content. A comparison between the photovoltaic properties of prepared betanin_DSSC and N719 dye_DSSC reveals that betanin dye could be successfully proposed as a sensitizing dye in solar cell applications.

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“…The performance of DSSC using vegetable dyes extracted in different solvents has been studied, and the reported results show that the performance does depend on the solvent properties such as polarity, acidity, dye combination, and temperature (Lim et al 2015;Warkkoyo 2011). The solubility of these vegetable dyes changes depending of the polarity of the extraction solvents, affecting the solubility and subsequently the adsorption behavior between the extracted dyes bonding onto TiO 2 surface, consequently affecting the cell PCE (Wongcharee et al 2007;Sreekala et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Impact of solvents on the extraction and purification of vegetable dyes onto the efficiency for dye-sensitized solar cells

2019

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Eight vegetable dyes extracted from flowers, fruits and leaves abundant in the wide biodiversity of the Andes region of South America were extracted with ethanol without purification to explore as vegetable photosensitizers in dye-sensitized solar cells (DSSCs). The absorbance spectra were measured by UV-visible spectroscopy and the photoelectrical performance of the DSSCs based on these dyes with a homemade solar simulator, constructed only for educational purposes under 1 sun of illumination. The open-circuit voltages (V oc) and the short-circuit photocurrent densities (J sc) varied from 0.39 to 0.48 V and from 0.04 to 0.56 mA cm −2 , and the power conversion efficiency (PCE) ranged from 0.01 to 0.18%. Particularly, the highest V oc and PCE values of the DSSCs sensitized by the ethanol extracts of Mortiño fruit (Vaccinium floribundum) and Jamaica flowers (Hibiscus sabdariffa) without purification were presumably associated with anthocyanin, the most effective component present in both vegetable photosensitizers. Hence, various components of the ethanol extracts obtained from these two vegetable dyes were purified by liquid-liquid extraction using different organic solvents of different polarity, namely petroleum ether, chloroform, ethyl acetate, n-butanol, and distilled water. Ethyl acetate resulted as the most favorable solvent for purification of ethanol extracts from Mortiño fruit and Jamaica flowers to use as vegetable photosensitizers in DSSCs. The PCE of the DSSC fabricated with the dye extracted in ethyl acetate from Mortiño fruit achieved 0.33%, with V oc of 0.520 V and J sc of 1.014 mA cm −2 , whereas the corresponding values obtained from the dye extracted from Jamaica flowers reached 0.22% with V oc of 0.541 V and J sc of 0.678 mA cm −2. Thus, the purification of vegetable dyes used as photosensitizer impacts the photoelectrochemical performance of DSSCs.

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Tailoring of extraction solvent of Ixora coccinea flower to enhance charge transport properties in dye-sensitized solar cells

Cited by 16 publications

References 34 publications

Betalain and anthocyanin dye-sensitized solar cells

Betalain and anthocyanin dye-sensitized solar cells

Potential of Betanin Natural Dye for Solar Cells Application

Impact of solvents on the extraction and purification of vegetable dyes onto the efficiency for dye-sensitized solar cells

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