Absorption Spectra of Natural Dyes and Their Effect on Efficiency of ZnO Based Dye-Sensitized Solar Cells

Karki, I. B.; Nakarmi, Jeevan Jyoti; Mandal, Pradeep K.; Chatterjee, Suman

doi:10.3126/njst.v13i1.7457

Cited by 6 publications

(6 citation statements)

References 28 publications

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“…The electrolyte (I − /I 3 − ) donates electron back to the dye. The sensitizers currently used in the fabrication of solar cells are transition metal coordination complexes such as Ruthenium (II) carboxylated polypyridyl complexes, due to their intense charge-transfer absorption in the whole visible range and highly efficient metal-ligand charge transfer transition (MLCT) 14 15 . Natural dyes are however more desirable than these synthetic dyes because they are more economical, easily attainable, and abundant in supply and environmentally friendly 5 16 .…”

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confidence: 99%

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Fabrication, Optimization and Characterization of Natural Dye Sensitized Solar Cell

Ghann

Kang

Sheikh

et al. 2017

Sci Rep

220

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The dyes extracted from pomegranate and berry fruits were successfully used in the fabrication of natural dye sensitized solar cells (NDSSC). The morphology, porosity, surface roughness, thickness, absorption and emission characteristics of the pomegranate dye sensitized photo-anode were studied using various analytical techniques including FESEM, EDS, TEM, AFM, FTIR, Raman, Fluorescence and Absorption Spectroscopy. Pomegranate dye extract has been shown to contain anthocyanin which is an excellent light harvesting pigment needed for the generation of charge carriers for the production of electricity. The solar cell’s photovoltic performance in terms of efficiency, voltage, and current was tested with a standard illumination of air-mass 1.5 global (AM 1.5 G) having an irradiance of 100 mW/cm2. After optimization of the photo-anode and counter electrode, a photoelectric conversion efficiency (η) of 2%, an open-circuit voltage (Voc) of 0.39 mV, and a short-circuit current density (Isc) of 12.2 mA/cm2 were obtained. Impedance determination showed a relatively low charge-transfer resistance (17.44 Ω) and a long lifetime, signifying a reduction in recombination losses. The relatively enhanced efficiency is attributable in part to the use of a highly concentrated pomegranate dye, graphite counter electrode and TiCl4 treatment of the photo-anode.

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confidence: 99%

“…The performance of various natural dye containing pigments such as anthocyanin 17 18 , xanthene 14 , chlorophyll, carotenoid and flavonoid have been thoroughly investigated 11 . These pigments are derived from various plant parts such as flower petals, leaves, roots and fruits pulp/bark.…”

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confidence: 99%

Fabrication, Optimization and Characterization of Natural Dye Sensitized Solar Cell

Ghann

Kang

Sheikh

et al. 2017

Sci Rep

220

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“…However, dye materials also have an impact on improving the efficiency of DSSC by absorbing photon energy and excitably producing energy on their de-excitation. Transition metals with high charge transfer abilities, such as ruthenium carboxylated polypyridyl complexes, are currently used as dyes 18 . Currently, natural dyes are replacing these complex molecules due to their economical, eco-friendly, and simple methodology with efficient results 19 , displaying a large absorption coefficient due to π to π * transition and the high number of natural functional groups available.…”

Section: Introductionmentioning

confidence: 99%

“…The efficiencies of DSSC for Zn-doped TiO 2 , Al-doped TiO 2 , Bi-doped TiO 2 , and Mg-doped TiO 2 were reported to be 0.65%, 0.59%, 0.48%, and 0.54%, respectively 17 – 22 . The high performance of natural dye materials, including plant parts such as leaves, flowers, fruit, pulp, and root pulp, was observed in improving the DSSC efficiency, involving natural chemicals such as xanthene, anthocynin, carotenoid, chlorophyll, flavonoid, and carboxylic acid 18 , 23 . This results in high electron transfer and combination and hence improves the efficiency of DSSCs 24 .…”

Section: Introductionmentioning

confidence: 99%

Improving the efficiency of dye-sensitized solar cells based on rare-earth metal modified bismuth ferrites

Khan

Iqbal

Malik

et al. 2023

Sci Rep

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This study reports light energy harvesting characteristics of bismuth ferrite (BiFeO3) and BiFO3 doped with rare-earth metals such as neodymium (Nd), praseodymium (Pr), and gadolinium (Gd) dye solutions that were prepared by using the co-precipitation method. The structural, morphological, and optical properties of synthesized materials were studied, confirming that 5–50 nm sized synthesized particles have a well-developed and non-uniform grain size due to their amorphous nature. Moreover, the peaks of photoelectron emission for bare and doped BiFeO3 were observed in the visible region at around 490 nm, while the emission intensity of bare BiFeO3 was noticed to be lower than that of doped materials. Photoanodes were prepared with the paste of the synthesized sample and then assembled to make a solar cell. The natural and synthetic dye solutions of Mentha, Actinidia deliciosa, and green malachite, respectively, were prepared in which the photoanodes were immersed to analyze the photoconversion efficiency of the assembled dye-synthesized solar cells. The power conversion efficiency of fabricated DSSCs, which was confirmed from the I–V curve, is in the range from 0.84 to 2.15%. This study confirms that mint (Mentha) dye and Nd-doped BiFeO3 materials were found to be the most efficient sensitizer and photoanode materials among all the sensitizers and photoanodes tested.

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“…In case of natural dye and ZnO thin film based DSSC solar cell, researchers have achieved efficiencies of less than 2% till date [15][16]. Recently we successfully [17] demonstrated ZnO nanorod based DSSCs with various dyes.…”

Section: Introductionmentioning

confidence: 99%

Dye-sensitized solar cells sensitized with natural dye extracted from Indian Jamun

et al. 2014

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Dye sensitized solar cell (DSSC) is a device which absorbs light from the sun with a layer of dye molecules and directly converts into electric energy. DSSCs based on ZnO have drawn attention worldwide due to their low cost and easy preparation techniques compared to conventional silicon based photovoltaic devices. Silicon based solar cells were the most popular before the emerging of dye-sensitized solar cells. These silicon based solar cells devices have dominated photovoltaic industry until now. The objectives of this study is to make DSSC using ZnO on ITO coated glass substrate as anode and characterize the DSSC properties such as conversion efficiency, short current density, open circuit voltage, and fill factor. ZnO thin films have been prepared on Indium tin oxide (ITO) glass substrate. These films were used to construct ITO/ZnO/Natural Dye/C/ITO, DSSCs with natural anthocyanin sensitizer extracted from wild Jamun fruits. The cells show open circuit voltage (Voc) of 0.58V, short-circuit current (I sc) of 1.66 mA and 0.58 fill factor (FF) with an conversion efficiency (η) of 1.23%. DOI: http://dx.doi.org/10.3126/bibechana.v11i0.10377 BIBECHANA 11(1) (2014) 34-39

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Absorption Spectra of Natural Dyes and Their Effect on Efficiency of ZnO Based Dye-Sensitized Solar Cells

Cited by 6 publications

References 28 publications

Fabrication, Optimization and Characterization of Natural Dye Sensitized Solar Cell

Fabrication, Optimization and Characterization of Natural Dye Sensitized Solar Cell

Improving the efficiency of dye-sensitized solar cells based on rare-earth metal modified bismuth ferrites

Dye-sensitized solar cells sensitized with natural dye extracted from Indian Jamun

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