scholarly journals Effect of Push-Pull Ruthenium Complex Adsorption Conformation on the Performance of Dye Sensitized Solar Cells

2020 ◽  
Author(s):  
Wilmmer Alexander Rosero ◽  
Robson Guimaraes ◽  
Tiago Matias ◽  
Koiti Araki
Keyword(s):  
Solar Cells ◽  
Ruthenium Complex ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Complex Adsorption ◽  
Sensitized Solar Cells

scholarly journals Eco-Friendly Dye-Sensitized Solar Cells Based on Water-Electrolytes and Chlorophyll

Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2150
Author(s):  
Ji-Hye Kim ◽  
Sung-Yoon Park ◽  
Dong-Hyuk Lim ◽  
So-Young Lim ◽  
Jonghoon Choi ◽  
...  
Keyword(s):  
Solar Cells ◽  
Plasma Treatment ◽  
Ruthenium Complex ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Dye Adsorption ◽  
Synthesis Process ◽  
Dye Sensitized ◽  
Water Based ◽  
Sensitized Solar Cells

Organic solvents used for electrolytes of dye-sensitized solar cells (DSSCs) are generally not only toxic and explosive but also prone to leakage due to volatility and low surface tension. The representative dyes of DSSCs are ruthenium-complex molecules, which are expensive and require a complicated synthesis process. In this paper, the eco-friendly DSSCs were presented based on water-based electrolytes and a commercially available organic dye. The effect of aging time after the device fabrication and the electrolyte composition on the photovoltaic performance of the eco-friendly DSSCs were investigated. Plasma treatment of TiO2 was adopted to improve the dye adsorption as well as the wettability of the water-based electrolytes on TiO2. It turned out that the plasma treatment was an effective way of improving the photovoltaic performance of the eco-friendly DSSCs by increasing the efficiency by 3.4 times. For more eco-friendly DSSCs, the organic-synthetic dye was replaced by chlorophyll extracted from spinach. With the plasma treatment, the efficiency of the eco-friendly DSSCs based on water-electrolytes and chlorophyll was comparable to those of the previously reported chlorophyll-based DSSCs with non-aqueous electrolytes.

scholarly journals The Effect of UV-Irradiation (under Short-Circuit Condition) on Dye-Sensitized Solar Cells Sensitized with a Ru-Complex Dye Functionalized with a (diphenylamino)Styryl-Thiophen Group

2009 ◽  
Vol 2009 ◽  
pp. 1-9 ◽  
Author(s):  
Kazuteru Nonomura ◽  
Yunhua Xu ◽  
Tannia Marinado ◽  
Daniel P. Hagberg ◽  
Rong Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Uv Irradiation ◽  
Ruthenium Complex ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Ru Complex ◽  
Redox Electrolyte ◽  
Sensitized Solar Cells ◽  
Short Circuit Condition

A new ruthenium complex, cis-di(thiocyanato)(2,2′-bipyridine-4,4′-dicarboxylic acid)(4,4′-bis(2-(5-(2-(4-diphenylaminophenyl)ethenyl)-thiophen-2-yl)ethenyl)-2,2′-bipyridine)ruthenium(II) (named E322) has been synthesized for use in dye-sensitized solar cells (DSCs). Higher extinction coefficient and a broader absorption compared to the standard Ru-dye, N719, were aimed. DSCs were fabricated with E322, and the efficiency was 0.12% initially. (4.06% for N719, as reference). The efficiency was enhanced to 1.83% by exposing the cell under simulated sunlight containing UV-irradiation at short-circuit condition. The reasons of this enhancement are (1) enhanceing electron injection from sensitizer toTiO2following a shift toward positive potentials of the conduction band ofTiO2by the adsorption of protons or cations from the sensitizer, or from the redox electrolyte and (2) improving the regeneration reaction of the oxidized dye by the redox electrolyte by the dissolution of aggregated dye from the surface ofTiO2following the treatment.

scholarly journals Triazoloisoquinoline-Based/Ruthenium-Hybrid Sensitizer for Efficient Dye-Sensitized Solar Cells

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Che-Lung Lee ◽  
Wen-Hsi Lee ◽  
Cheng-Hsien Yang
Keyword(s):  
Solar Cells ◽  
Conversion Efficiency ◽  
Ruthenium Complex ◽  
Molecular Layer ◽  
Dye Sensitized Solar Cells ◽  
Visible Spectrum ◽  
Photoelectric Conversion Efficiency ◽  
Photoelectric Conversion ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Triazoloisoquinoline-based organic dyestuffs were synthesized and used in the fabrication of dye-sensitized solar cells (DSSCs). After cosensitization with ruthenium complex, the triazoloisoquinoline-based organic dyestuffs overcame the deficiency of ruthenium dyestuff absorption in the blue part of the visible spectrum. This method also fills the blanks of ruthenium dyestuff sensitized TiO2film and forms a compact insulating molecular layer due to the nature of small molecular organic dyestuffs. The incident photon-to-electron conversion efficiency of N719 at shorter wavelength regions is 49%. After addition of a triazoloisoquinoline-based dyestuff for co-sensitization, the IPCE at 350–500 nm increased significantly. This can be attributed to the increased photocurrent of the cells, which improves the dye-sensitized photoelectric conversion efficiency from 6.23% to 7.84%, and the overall conversion efficiency increased by about 26%. As a consequence, this low molecular weight organic dyestuff is a promising candidate as coadsorbent and cosensitizer for highly efficient dye-sensitized solar cells.

Cyclometalated ruthenium complex as a promising sensitizer in dye-sensitized solar cells

2014 ◽  
Vol 50 (6) ◽  
pp. 503-509 ◽  
Author(s):  
V. A. Grinberg ◽  
A. V. Medved’ko ◽  
V. V. Emets ◽  
S. A. Kurzeev ◽  
S. A. Kozyukhin ◽  
...  
Keyword(s):  
Solar Cells ◽  
Ruthenium Complex ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

A new thiocyanate-free cyclometallated ruthenium complex for dye-sensitized solar cells: Beneficial effects of substitution on the cyclometallated ligand

2012 ◽  
Vol 714 ◽  
pp. 88-93 ◽  
Author(s):  
Claudia Dragonetti ◽  
Adriana Valore ◽  
Alessia Colombo ◽  
Dominique Roberto ◽  
Vanira Trifiletti ◽  
...  
Keyword(s):  
Solar Cells ◽  
Ruthenium Complex ◽  
Dye Sensitized Solar Cells ◽  
Beneficial Effects ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

New organic dyes with varied arylamine donors as effective co-sensitizers for ruthenium complex N719 in dye sensitized solar cells

2020 ◽  
Vol 451 ◽  
pp. 227776 ◽  
Author(s):  
Zhi-Sheng Wu ◽  
Xin-Chao Song ◽  
Ya-Dong Liu ◽  
Jie Zhang ◽  
Hu-Sheng Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Dyes ◽  
Ruthenium Complex ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Sensitized Solar Cells
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