scholarly journals Impact of the molecular structure and adsorption mode of D–π–A dye sensitizers with a pyridyl group in dye-sensitized solar cells on the adsorption equilibrium constant for dye-adsorption on TiO2 surface

2016 ◽  
Vol 18 (48) ◽  
pp. 32992-32998 ◽  
Author(s):  
Yousuke Ooyama ◽  
Naoya Yamaguchi ◽  
Joji Ohshita ◽  
Yutaka Harima
Keyword(s):  
Equilibrium Constant ◽  
Adsorption Equilibrium ◽  
Dye Sensitized Solar Cells ◽  
Dye Adsorption ◽  
Tio2 Surface ◽  
Pyridyl Group ◽  
Dye Sensitized ◽  
Adsorption Equilibrium Constant ◽  
Adsorption Mode ◽  
Sensitized Solar Cells

Adsorption modes of D–π–A dyes with a pyridyl group on a TiO2 electrode have been investigated for the adsorption equilibrium constant by Langmuir isotherms.

Influence of TiO2 surface defects on the adsorption of N719 dye molecules

2021 ◽  
Vol 23 (38) ◽  
pp. 22160-22173
Author(s):  
Altaf A. Shamsaldeen ◽  
Lars Kloo ◽  
Yanting Yin ◽  
Christopher Gibson ◽  
Sunita Gautam Adhikari ◽  
...  
Keyword(s):  
Solar Cells ◽  
Surface Defects ◽  
Dye Sensitized Solar Cells ◽  
Dye Adsorption ◽  
Tio2 Surface ◽  
Dye Molecules ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Surface defects influence the dye adsorption on TiO2 used as a substrate in dye-sensitized solar cells (DSSCs).

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.

X-ray Characterization of Dye Adsorption in Coadsorbed Dye-Sensitized Solar Cells

2013 ◽  
Vol 117 (33) ◽  
pp. 17033-17038 ◽  
Author(s):  
Mitsunori Honda ◽  
Masatoshi Yanagida ◽  
Liyuan Han ◽  
Kenjiro Miyano
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Dye Adsorption ◽  
X Ray ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

scholarly journals New Oxindole-Bridged Acceptors for Organic Sensitizers: Substitution and Performance Studies in Dye-Sensitized Solar Cells

Molecules ◽  
2020 ◽  
Vol 25 (9) ◽  
pp. 2159
Author(s):  
Yogesh S. Tingare ◽  
Chaochin Su ◽  
Ming-Tai Shen ◽  
Sheng-Han Tsai ◽  
Shih-Yu Ho ◽  
...  
Keyword(s):  
Solar Cells ◽  
Performance Studies ◽  
Dye Sensitized Solar Cells ◽  
Tio2 Surface ◽  
Carbonyl Groups ◽  
Dye Sensitized ◽  
Amide Carbonyl ◽  
And Performance ◽  
Sensitized Solar Cells ◽  
Organic Sensitizers

New D-π-A configured organic sensitizers featuring halogen-substituted oxindole-bridged acceptor units have been synthesized for dye-sensitized solar cells applications. Among fluorine, bromine, and iodine substitution, the cell based on bromine incorporated dye exhibited the highest efficiency. The oxindoles in these sensitizers were found to assist the electron injection through the chelation of their amide carbonyl groups to the TiO2 surface. This study provides an alternate approach for future rational dye design to gain excellent DSSC performance.

scholarly journals Diatom frustules enhancing the efficiency of gel polymer electrolyte based dye-sensitized solar cells with multilayer photoelectrodes

2020 ◽  
Vol 2 (1) ◽  
pp. 199-209 ◽  
Author(s):  
T. M. W. J. Bandara ◽  
M. Furlani ◽  
I. Albinsson ◽  
Angela Wulff ◽  
B.-E. Mellander
Keyword(s):  
Solar Cells ◽  
Light Scattering ◽  
Polymer Electrolyte ◽  
Nanostructured Materials ◽  
Gel Polymer Electrolyte ◽  
Dye Sensitized Solar Cells ◽  
Dye Adsorption ◽  
Easy Task ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

The incorporation of nanostructures that improve light scattering and dye adsorption has been suggested for dye-sensitized solar cells (DSSCs), but the manufacture of photonic and nanostructured materials with the desired properties is not an easy task.

scholarly journals ZnO@TiO2 Core/Shell Nanowire Arrays with Different Thickness of TiO2 Shell for Dye-Sensitized Solar Cells

Crystals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 325
Author(s):  
Liqing Liu ◽  
Hui Wang ◽  
Dehao Wang ◽  
Yongtao Li ◽  
Xuemin He ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Dye Adsorption ◽  
Zno Nanowires ◽  
Nanowire Arrays ◽  
Core Shell ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Tio2 Shell

The ZnO@TiO2 core/shell nanowire arrays with different thicknesses of the TiO2 shell were synthesized, through depositing TiO2 on the ZnO nanowire arrays using the pulsed laser deposition process. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images show that these core/shell nanowires were homogeneously coated with TiO2 nanoparticles with high crystallinity, appearing to be a rather rough surface compared to pure ZnO nanowires. The efficiency of ZnO@TiO2 core/shell structure-based dye-sensitized solar cells (DSSCs) was improved compared with pure ZnO nanowires. This is mainly attributed to the enlarged internal surface area of the core/shell structures, which increases dye adsorption on the anode to improve the light harvest. In addition, the energy barrier which formed at the interface between ZnO and TiO2 promoted the charge separation and suppressed the carrier recombination. Furthermore, the efficiency of DSSCs was further improved by increasing the thickness of the TiO2 shell. This work shows an efficient method to achieve high power conversion efficiency in core/shell nanowire-based DSSCs.

Increasing the Oxygen Vacancy Density on the TiO2 Surface by La-Doping for Dye-Sensitized Solar Cells

2010 ◽  
Vol 114 (43) ◽  
pp. 18396-18400 ◽  
Author(s):  
Jiyuan Zhang ◽  
Zongyan Zhao ◽  
Xiangyan Wang ◽  
Tao Yu ◽  
Jie Guan ◽  
...  
Keyword(s):  
Solar Cells ◽  
Oxygen Vacancy ◽  
Dye Sensitized Solar Cells ◽  
Tio2 Surface ◽  
La Doping ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Vacancy Density
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