Natural Pigments as Sensitizers for Dye Sensitized Solar Cells

Jonathan, Ezeoke

doi:10.11648/j.am.20160505.11

Cited by 9 publications

(6 citation statements)

References 14 publications

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“…It shows that the use of Moringa oleifera dye can help light absorption in DSSC fabrication. The absorbance of dye Moringa oleifera from previous studies has maximum absorption at 400 nm wavelength (Jonathan et al, 2016). The difference of these results with the results of this study may be due to differences in dye and solvent concentrations used.…”

Section: Characterization Of the Absorbance Spectrumcontrasting

confidence: 89%

“…Dye has been able to increase the absorption of photons and reduce the recombination of electrons to be forwarded towards the TiO 2 semiconductor. The results of the efficiency of this study are greater than previous studies where using dye Moringa oleifera and TiO 2 nanocrystal is an efficiency of 0.0078% (Jonathan et al, 2016).…”

Section: Characterization Of the Absorbance Spectrumcontrasting

confidence: 65%

“…One of the natural dyes used previously is Moringa oleifera which is high in chlorophyll. However, the efficiency result given is not maximal, that is 0,0078% (Jonathan et al, 2016). Therefore in this study, will also be used dye chlorophyll from Moringa oleifera combined with a TiO 2 -Cu electrode, a counter electrode from platinum and electrolyte form NaI solution.…”

Section: Introductionmentioning

confidence: 96%

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Time Variation of Insertion Cu On TiO2 Nanoparticles Layer Through The Electroplating Method In Dye-Sensitized Solar Cell (DSSC)

Obina

Supriyanto

Cari

et al. 2017

J. Phys.: Theor. Appl.

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Abstract:Copper (Cu) is a conductive metal. Insertion of copper on a TiO 2 active layer is the right choice in the effort to improve Dye-Sensitized Solar Cell (DSSC) performance. Electroplating methods were used in this study to insert copper in the TiO 2 layer. The device of DSSC used in this study is natural dye Moringa Oleifera, TiO 2 -Cu electrode, the counter electrode of Pt and electrolyte from NaI. The peak absorbance of dye is at wavelength 415 nm and maximum efficiency is 0,093% from the time variation electroplating of 25 s. There is increase efficiency from TiO 2 to TiO 2 -Cu electrode with time variation of electroplating. It is shown that insertion of copper in the TiO 2 nanoparticles layer improves the performance of DSSC.

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Section: Characterization Of the Absorbance Spectrumcontrasting

confidence: 89%

Section: Characterization Of the Absorbance Spectrumcontrasting

confidence: 65%

Section: Introductionmentioning

confidence: 96%

See 1 more Smart Citation

Time Variation of Insertion Cu On TiO2 Nanoparticles Layer Through The Electroplating Method In Dye-Sensitized Solar Cell (DSSC)

Obina

Supriyanto

Cari

et al. 2017

J. Phys.: Theor. Appl.

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“…Low IPCE% value was recorded using biosynthesized phototelectrode obtained within a 2 : 3 ratio, and the value was estimated as 1.27% at a wavelength value of 800 nm. This low value of IPCE% may be attributed due to inefficient light harvesting efficiency (LHE) by the dye, that is, inefficient charge injection into the prepared TiO 2 film or inefficient collection of injected electrons [35].…”

Section: Ipce Characteristics Of Biosynthesized Tio 2 -Based Dsscsmentioning

confidence: 99%

Biotemplated Synthesis of Titanium Oxide Nanoparticles in the Presence of Root Extract of Kniphofia schemperi and Its Application for Dye Sensitized Solar Cells

Bekele

Zereffa

Gultom

et al. 2021

International Journal of Photoenergy

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Metal oxide nanoparticles prepared by biological route using green plant parts as a template are eco-friendly as well as yield good results than the conventional methods. This present study focusses on biosynthesis and characterization of TiO2 NPs using root extract of Kniphofia schemperi for dye-sensitized solar cells. TiO2 NPs were synthesized using 0.25 M titanium tetra butoxide in the presence of root extract of Kniphofia schemperi with the volume ratios. The analysis result revealed that the synthesized TiO2 NPs were thermally stable above 500°C and have spherical morphology, with the average crystalline size of 11.7, 8.3, and 8.6 nm, and band gap energy of 3.35 eV, 3.33 eV, and 3.36 eV, respectively, for the TiO2 NPs prepared at the volume ratios of 2 : 3, 1 : 1, and 3 : 2. Biosynthesized TiO2 NPs were used as photoanode in dye-sensitized solar cells (a device used for converting absorbed light into electricity). Solar cell devices were fabricated using roots of Kniphofia schemperi sensitizer in the presence of TiO2 NPs biosynthesized within (2 : 3, 1 : 1, and 3 : 2) volume ratio, which showed power conversion efficiency of 0.039%, 0.117%, and 1.3%. Incident photon to current conversion efficiency (IPCE) analysis using TiO2 (2 : 3, 1 : 1, and 3 : 2) photoelectrodes showed 6.64%, 2.66%, and 18%. Among the biosynthesized TiO2 different volume ratios, TiO2 (3 : 2) NPs showed relatively maximum solar cell efficiency and IPCE value due to its uniform spherical shape that enables to absorb large dye molecules on its surface, and this intern improves device efficiency.

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“…ITO is characterized by the highest available optical transmittance of ~90% in visible spectrum light with the lowest electrical resistivity of ~10 -4 Ω•cm [28]. Among all the components, the dye plays a crucial role in the conversion of sunlight into electricity [1,19]. Its role is to extend the absorption of solar light by mesoporous TiO 2 layer from visible to the near-infrared range (up to 920 nm) in the solar spectrum and thus increasing the efficiency of solar conversion [10].…”

Section: Fig 1 Scheme Of Dye-sensitized Solar Cellsmentioning

confidence: 99%

Dye Photosensitizers and Their Influence on DSSC Efficiency: A Review

Krawczak

2019

IAPGOS

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Since early 1990s dye-sensitized solar cells (DSSC) has been developed by many research groups all over the World. This paper presents a review of researches focusing on photosensitizer influence on DSSC efficiency. Variety of dye substance has been analyzed. The highest efficiency around 11.2% has been noted for ruthenium-based DSSC devices. Natural dyes allowed to reach 4.6%. The most metal-free organic dyes resulted in efficiency ranged from 5% to 9%, however, some of them (e.g. Y123) allowed to obtain devices with efficiencies equal to 10.3%. Co-sensitization is the new approach which results in efficiencies up to 14.3%.

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Natural Pigments as Sensitizers for Dye Sensitized Solar Cells

Cited by 9 publications

References 14 publications

Time Variation of Insertion Cu On TiO2 Nanoparticles Layer Through The Electroplating Method In Dye-Sensitized Solar Cell (DSSC)

Time Variation of Insertion Cu On TiO2 Nanoparticles Layer Through The Electroplating Method In Dye-Sensitized Solar Cell (DSSC)

Biotemplated Synthesis of Titanium Oxide Nanoparticles in the Presence of Root Extract of Kniphofia schemperi and Its Application for Dye Sensitized Solar Cells

Dye Photosensitizers and Their Influence on DSSC Efficiency: A Review

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