Dye-sensitized solar cell using natural dyes extracted from spinach and ipomoea

Chang, Ho; Wu, Haoming; Chen, T.L.; Huang, K.D.; Jwo, Ching Song; Lo, Yu-Jen

doi:10.1016/j.jallcom.2009.10.057

Cited by 209 publications

(90 citation statements)

References 20 publications

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“…The spectrum is identical to the standard data sheet (JCPD 01-075-8897). The XRD pattern observed in this study is in agreement with previous report [8]. Surface morphology of the TiO2 nanocrystalline is presented in Figure 3, which shows homogeneous and uniform spread of the anatase TiO2 film on the glass substrate.…”

Section: Resultssupporting

confidence: 91%

“…Similar work was done by [7] with ethanol as the extracting solvent and pawpaw leaf extract had better absorption peak than flame tree flower extract. Another reason that could lower the absorption peak of pawpaw extract among the study dyes could be due to different absorption properties for different pigments and colors of different extract fluids [8]. Figure 8 shows the photovoltaic test of DSSCs using these natural dyes as sensitizers.…”

Section: Figure 4 -Edx Image Of the Photo Electrode Of Tiomentioning

confidence: 99%

“…On the other hand natural dye is easy to obtain and the cost is very low [6]. Green plants are mostly rich in chlorophyll and red leaves are rich in anthocyanine [7] and the application of this kind of natural dye has been frequently investigated in many related studies [3,8,9].…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and Characterization of Natural Sensitizers for Dye Sensitized Solar Cells

Kimpa

Isah

Yabagi

et al. 2017

PoS

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Abstract. Natural dyes of anthocyanin extract from flame tree flower (Delonix regia) and chlorophyll extract from pawpaw leaf (Carica papaya) were used as sensitizer to fabricate dye sensitized solar cell (DSSC). The photoelectrode were subjected to UV/Vis spectrophotometer to view their absorbability. Anthocyanine from flame tree flower dye extract had the higher conversion efficiency of 0.8 % which could be better in term of application in dye solar cell.

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Section: Resultssupporting

confidence: 91%

Section: Figure 4 -Edx Image Of the Photo Electrode Of Tiomentioning

confidence: 99%

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Synthesis and Characterization of Natural Sensitizers for Dye Sensitized Solar Cells

Kimpa

Isah

Yabagi

et al. 2017

PoS

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“…The TiO 2 polymorph has three phases: anatase, rutile and bruquita [21][22][23], and its own intrinsic properties leading to different technological applications in the form of nanoparticles, such as in dye-sensitized solar cells [24][25][26][27], lubricant [28], deionization [29], opto-mechanical composite [30] and others. In this experimental work was observed only the anatase-TiO 2 (a-TiO 2 ) and rutile-TiO 2 (r-TiO 2 ) phases (Figure 1).…”

Section: Figurementioning

confidence: 99%

Nanostructured titanium dioxide average size from alternative analysis of Scherrer's Equation

et al. 2018

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RESUMOQuantificar o tamanho de materiais em escala nanométrica é um dos desafios a serem superados, uma vez que existem técnicas diferentes. A equação de Scherrer modificada foi usada para estimar o tamanho das partículas de dióxido de titânio em escala nanométrica. Dióxido de titânio com tamanho nominal de nanopartícu-la de 21 nm foi usado como padrão para determinar a precisão da equação modificada. A partir dos dados de raios-X, para a amostra sem tratamento térmico foi obtido um valor médio do tamanho das nanopartículas de 20,63 nm. Um tratamento estatístico foi usado para fazer uma correlação entre o valor estimando pela equação de Scherrer modificada e o valor nominal de 21nm. Um desvio de 0,70 foi encontrado entre o valor calculado e o valor nominal, indicando uma concordância entre os valores. Adicionalmente, a influência da temperatura sobre o tamanho médio das nanopartículas de dióxido de titânio foi pesquisada.Palavras-chave: Nanomateriais, Equação de Scherrer, Dióxido de Titânio. ABSTRACTThe materials sizing in nano-scale is a challenge to be overcome, because the size determined by various methods differ. In order to shed light about the nanomaterials sizing, a modified Scherrer's equation was applied to estimate more accurately the nanostructured titanium dioxide crystal size. The manufactured titanium dioxide-nanostructured powder with nominal average size about 21nm was used as the reference standard to determine the accurate of modified equation. From X-ray diffraction data, an average crystal size about 20.63 nm was achieved for unheated sample. To establish a relation between the result obtained with modified Scherrer's equation and the nominal average crystal size, a statistical treatment and a comparative assessment were performed. The average absolute divergence does not exceed 0.70 nm. The value of crystal size determined from X-ray data was in good agreement with that informed by the supplier. Additionally, the behavior of sample was studied as a function of temperature.

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“…Photons with different wavelengths incident on the photo anode of the cell and penetrate into the dye layer since both photo anode and the pure or doped TiO2 nano crystals are transparent to visible light. If the energy of the incident photon is close to the energy gap of the dye molecule, gets absorbed by the dye and promoting one electron from highest occupied molecular orbital (HOMO) to lowest unoccupied molecular orbital (LUMO)of the dye [30,31]. The excited electron will then be injected into the conduction band of TiO 2 through the interfacial bonds between the dye and the TiO 2 , and collected by the counter electrode.…”

Section: Mechanism Of Dye Sensitized Solar Cells Based On Pnp Smentioning

confidence: 99%

Efficiency of Solar Cells Employing Natural Dyes with Plasmonic Nano Particle Based Photo Anode

Sahu¹,

Dhonde²,

Purohit³

et al. 2017

JPMT

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Abstract:Cheap and efficient dye sensitized solar cells (DSSCs) can be prepared using natural dyes responding in visible region of solar spectrum. Localized surface Plasmon resonance (LSPR) plays a very important role for the improvement in the efficiency of DSSCs by using Plasmonic nanoparticles (PNPs) for exploiting the visible portion of the solar radiation by transferring the energy from dye to PNP. This energy transfer from dye to low cost semiconductor TiO 2 through PNP increases the overall photo catalytic activity. In the present study, natural and synthetic dyes are prepared and the optical transmittance and absorbance of the dyes are measured in the wavelength range of 250nm to 850nm using UV-Vis spectroscopy and they are used in DSSC. Natural dyes extracted from fruits and synthetic dye based on Ru metal complex is used as sensitizers. Photo Conversion Efficiency (PCE) of the solar cells utilizing different dyes are compared. Out of the various natural dyes, beetroot and strawberry extracts based dyes show good absorbance in the visible range of electromagnetic spectrum. On the other hand synthetic dye based on Ru complex shows strong absorbance over a wide range of visible spectrum. The absorbance increases with increase in concentration of Ru in ethanol. The extracts of beetroot, strawberry and mixed fruits show a peak in absorbance spectra at 501nm, 416nm and 332nm respectively, indicating the absorption over wide range of visible spectrum. Maximum efficiency of solar cell obtained with synthetic and natural dyes are 5% and 1.5% respectively.

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Dye-sensitized solar cell using natural dyes extracted from spinach and ipomoea

Cited by 209 publications

References 20 publications

Synthesis and Characterization of Natural Sensitizers for Dye Sensitized Solar Cells

Synthesis and Characterization of Natural Sensitizers for Dye Sensitized Solar Cells

Nanostructured titanium dioxide average size from alternative analysis of Scherrer's Equation

Efficiency of Solar Cells Employing Natural Dyes with Plasmonic Nano Particle Based Photo Anode

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