scholarly journals TheCortinariusFungi Dyes as Sensitizers in Dye-Sensitized Solar Cells

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Maciej Zalas ◽  
Błażej Gierczyk ◽  
Hubert Bogacki ◽  
Grzegorz Schroeder
Keyword(s):  
Solar Cells ◽  
Fill Factor ◽  
Dye Sensitized Solar Cells ◽  
Photocurrent Density ◽  
Natural Dyes ◽  
Conversion Process ◽  
Dye Sensitized ◽  
Vis Spectroscopy ◽  
First Time ◽  
Sensitized Solar Cells

The dye-sensitized solar cells have been for the first time prepared usingCortinariusfungi extracts as a source of sensitizing dyes. The seven species ofCortinariusgroup, collected in the East Poland, have been used to obtain crude extracts of natural dyes used as sensitizing solutions to prepare DSSCs working electrodes. Extracts and sensitized electrodes have been well characterized by UV-Vis spectroscopy measurements. The device sensitized byCortinarius sanguineusextract has been found the most active in photon-to-current conversion process with efficiencyη=0.64%, fill factorFF=65.9%, photocurrent densityJSC=1.79 mA/cm2, and photovoltageVOC=541 mV.

scholarly journals A New Ruthenium Sensitizer Containing Benzo[1,9]quinolizino(acridin-2-yl)vinyl-2,2′-bipyridine Ligand for Effective Nanocrystalline Dye-Sensitized Solar Cells

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Jeum-Jong Kim ◽  
Jeonghun Yoon ◽  
Eun Jung Kim ◽  
Bo Ram Kim ◽  
Yong-Jin Yoon ◽  
...  
Keyword(s):  
Solar Cells ◽  
Conversion Efficiency ◽  
Fill Factor ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Photocurrent Density ◽  
Open Circuit ◽  
Dye Sensitized ◽  
Bipyridine Ligand ◽  
Sensitized Solar Cells

Novel ruthenium bipyridyl sensitizer incorporating conjugated benzo[1,9]quinolizino-(acridin-2-yl)vinyl-2,2′-bipyridine ligand [JJ-12] has been synthesized and demonstrated as efficient sensitizer in dye-sensitized solar cells. A mesoporous titania film stained withJJ-12exhibits a remarkable incident monochromatic photon-to-current conversion efficiency of 82%. Under standard AM 1.5 sunlight, the solar cell using a liquid-based electrolyte consisting of 0.6 M 1,2-dimethyl-3-propylimidazolium iodide (DMPII), 0.05 M I2, 0.1 M LiI, and 0.5 Mtert-butylpyridine in acetonitrile exhibits a short-circuit photocurrent density of 16.47 mA/cm2, an open-circuit voltage of 0.71 V, and a fill factor of 0.71, corresponding to an overall conversion efficiency of 8.34 %.

Natural dyes as sensitizers for dye-sensitized solar cells

2018 ◽  
Vol 11 (03) ◽  
pp. 1850051 ◽  
Author(s):  
Chu Qin ◽  
Dingyu Yang ◽  
Peng Gu ◽  
Xinghua Zhu ◽  
Hui Sun
Keyword(s):  
Solar Cells ◽  
Conversion Efficiency ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Photocurrent Density ◽  
Open Circuit ◽  
Natural Dyes ◽  
Dye Sensitized ◽  
Bonding Performance ◽  
Sensitized Solar Cells

The dye-sensitized solar cells (DSSCs) have been fabricated by using a series of natural dyes extracted from euonymus japonicus and purple plants. The optical characteristics and chemical structure of dyes were investigated by UV-visible spectroscopy and Fourier infrared spectroscopy. It is found that the absorption of sunlight and bonding performance to TiO2 electrode of dyes had significantly effects on the conversion efficiency of solar cells. The results show the cells using blueberry as sensitizer achieved best conversion efficiency of 0.218%, attributed to its strong absorption and excellent bonding to the TiO2 electrode, correspondingly, the short-circuit photocurrent density ([Formula: see text] and open-circuit voltage ([Formula: see text] were 1.3[Formula: see text]mA/cm2 and 430[Formula: see text]mV, respectively.

scholarly journals Betalain Pigments as Natural Photosensitizers for Dye-Sensitized Solar Cells: The Effect of Dye pH on the Photoelectric Parameters

2015 ◽  
Vol 55 ◽  
pp. 86-93 ◽  
Author(s):  
Kasim Uthman Isah ◽  
Umar Ahmadu ◽  
Adamu Idris ◽  
Mohammed Isah Kimpa ◽  
Uno Essang Uno ◽  
...  
Keyword(s):  
Solar Cells ◽  
Fill Factor ◽  
Dye Sensitized Solar Cells ◽  
Photocurrent Density ◽  
Dye Sensitizer ◽  
Dye Sensitized ◽  
Ph Values ◽  
Sensitized Solar Cells ◽  
Extracting Solvent ◽  
Bougainvillea Glabra

Dye-sensitized solar cells (DSSC) were fabricated using red Bougainvillea glabra flower dye extracts as natural dye sensitizers at three dye pH values of 1.23, 3.0 and 5.7. Water was used as dye extracting solvent. Dye-sensitized solar cells (DSSCs) from dye extract of pH 3.0 had the highest photocurrent density J of 3.72 mA/cm2 and fill factor FF of 0.59. While the DSSCs from dye sensitizer pHs of 1.23 and 5.7 had Jsc of 1.13 mA/cm2 and 2.27 mA/cm2, and fill factors of 0.43 and 0.61 respectively. The maximum powers Pmax of the DSSCs were 0.50, 1.64 and 0.94 mW/cm2 for dye sensitizer pH of 1.23, 3.0 and 5.7 respectively.

scholarly journals Fabrication and Characterization of Dye-Sensitized Solar Cells for Greenhouse Application

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Jeum-Jong Kim ◽  
Mangu Kang ◽  
Ock Keum Kwak ◽  
Yong-Jin Yoon ◽  
Kil Sik Min ◽  
...  
Keyword(s):  
Solar Cells ◽  
Fill Factor ◽  
Open Circuit Voltage ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Photocurrent Density ◽  
Open Circuit ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

We have developed dye-sensitized solar cells using novel sensitizers with enhanced transmittance of red (625–675 nm) and blue (425–475 nm) wavebands to control the illumination condition in the greenhouse. Novel ruthenium bipyridyl sensitizers with general formulas (Me3PhN)4[Ru(dcbpy)2(NCS)2] (JJ-7) and (Me3BnN)4[Ru(dcbpy)2(NCS)2] (JJ-9) have been synthesized and demonstrated as efficient sensitizers in dye-sensitized solar cells for greenhouse application. Under standard AM 1.5 sunlight, the solar cell ofJJ-7using a liquid-based electrolyte exhibits a short-circuit photocurrent density of 8.49 mA/cm2, an open-circuit voltage of 0.83 V, and a fill factor of 0.71, corresponding to an overall conversion efficiency of 4.96% on 5 μm TiO2film. The transmittance ofJJ-7andJJ-9shows 62.0% and 61.0% at 660 nm and 18.0% and 15.0% at 440 nm for cultivation on 5 μm TiO2film, respectively.

Application of new natural dyes extracted from Nasturtium flowers (Tropaeolum majus) as photosensitizer in dye-sensitized solar cells

Optik ◽  
2021 ◽  
pp. 167331
Author(s):  
Shalini Singh ◽  
Ishwar Chandra Maurya ◽  
Shubham Sharma ◽  
Shiva Prakash Singh Kushwaha ◽  
Pankaj Srivastava ◽  
...  
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Natural Dyes ◽  
Dye Sensitized ◽  
Tropaeolum Majus ◽  
Sensitized Solar Cells

scholarly journals Intriguing C–H⋯Cu interactions in bis-(phenanthroline)Cu(i) redox mediators for dye-sensitized solar cells

2018 ◽  
Vol 47 (4) ◽  
pp. 1018-1022 ◽  
Author(s):  
Alessia Colombo ◽  
Rachele Ossola ◽  
Mirko Magni ◽  
Dominique Roberto ◽  
Denis Jacquemin ◽  
...  
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Redox Mediators ◽  
Methyl Group ◽  
Dye Sensitized ◽  
Copper Site ◽  
First Time ◽  
Sensitized Solar Cells

For the first time, an anagostic interaction is found between a H atom of a methyl group and a copper site in the bis-2-tertbutyl(phenanthroline)Cu(i) complex.

Organic dye-sensitized solar cells containing alkaline iodide-based gel polymer electrolytes: influence of cation size

2018 ◽  
Vol 20 (2) ◽  
pp. 1276-1285 ◽  
Author(s):  
Ottavia Bettucci ◽  
Valeria Saavedra Becerril ◽  
T. M. W. J. Bandara ◽  
Maurizio Furlani ◽  
Maria Abrahamsson ◽  
...  
Keyword(s):  
Solar Cells ◽  
Polymer Electrolytes ◽  
Multidisciplinary Approach ◽  
Dye Sensitized Solar Cells ◽  
Organic Dye ◽  
Dye Sensitized ◽  
Gel Electrolytes ◽  
Cation Size ◽  
First Time ◽  
Sensitized Solar Cells

Effect of cation size on the performances of dye-sensitized solar cells containing alkaline iodide-based gel electrolytes in combination with an organic dye was evaluated for the first time using a multidisciplinary approach.

Thiocyanate Free Ruthenium(II) Complexes for Dye Sensitized Solar Cells (DSSCs)

2018 ◽  
Vol 382 ◽  
pp. 369-373
Author(s):  
Usana Mahanitipong ◽  
Preeyapat Prompan ◽  
Rukkiat Jitchati
Keyword(s):  
Solar Cells ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Visible Region ◽  
Photocurrent Density ◽  
Open Circuit ◽  
Dye Sensitized ◽  
Ligand Charge Transfer ◽  
Sensitized Solar Cells ◽  
Open Circuit Photovoltage

The four thiocyanate free ruthenium(II) complexes; [Ru(N^N)2(C^N)]PF6were synthesized and characterized for dye sensitized solar cells (DSSCs). The results showed that the broad absorptions covered the visible region from metal to ligand charge transfer (MLCT) were obtained with the main peaks at 560, 490 and 400 nm. The materials were studied DSSC performance under standard AM 1.5. Compound PP1 showed the power conversion efficiency (PCE) at 3.10%, with a short-circuit photocurrent density (Jsc) of 7.99 mA cm-2, an open-circuit photovoltage (Voc) of 563 mV and a high fill factor (ff) of 0.690.

scholarly journals Improved Performance of Dye-Sensitized Solar Cells with TiO2 Nanoparticles/Zn-Doped TiO2 Hollow Fiber Photoanodes

Energies ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 2922 ◽  
Author(s):  
Zainal Arifin ◽  
Suyitno Suyitno ◽  
Syamsul Hadi ◽  
Bayu Sutanto
Keyword(s):  
Solar Cells ◽  
Tio2 Nanoparticles ◽  
Double Layer ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Photocurrent Density ◽  
Light Transmittance ◽  
Doped Tio2 ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

In this study, dye-sensitized solar cells (DSSCs) were fabricated using double-layer photoanodes consisting of TiO2 nanoparticles (NPs) and Zn-doped TiO2 hollow fibers (HFs). The TiO2 HFs were prepared by co-axial electrospinning and used as the light-scattering layer in the DSSC. The thickness variations of the TiO2 NP and Zn-doped TiO2 HF photoanode layers affect the performance of the DSSC, especially the short-circuit photocurrent density. The thickness of the TiO2 NP layer significantly affected the absorbance of photons and N719 dye molecules in the double-layer photoanode, while that of the Zn-doped TiO2 HF layer affected the scattering of light, as indicated by the low light transmittance in the photoanode. Conventional DSSCs consist of single-layer photoanodes, and exhibit relatively low efficiency, i.e., 1.293% and 0.89% for TiO2 NP and Zn-doped TiO2 HF, respectively. However, herein, the highest efficiency of the DSSC (3.122%) was achieved with a 15 μm NP-5 μm HF photoanode, for which the short-circuit photocurrent density, open-circuit photovoltage, and fill factor were 15.81 mA/cm2, 0.566 V, and 34.91%, respectively.

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