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 In Situ Mapping of the Molecular Arrangement of Amphiphilic Dye Molecules at the TiO2 Surface of Dye-Sensitized Solar Cells

2015 ◽  
Vol 7 (20) ◽  
pp. 10834-10842 ◽  
Author(s):  
Kislon Voïtchovsky ◽  
Negar Ashari-Astani ◽  
Ivano Tavernelli ◽  
Nicolas Tétreault ◽  
Ursula Rothlisberger ◽  
...  
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Tio2 Surface ◽  
Dye Molecules ◽  
Dye Sensitized ◽  
Molecular Arrangement ◽  
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.

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.

Effect of TiO2 surface treatment on electron transfer in dye-sensitized solar cells

2022 ◽  
Author(s):  
Suping Jia ◽  
Tong Cheng ◽  
Huinian Zhang ◽  
Hao Wang ◽  
Caihong Hao
Keyword(s):  
Solar Cells ◽  
Electron Transport ◽  
High Efficiency ◽  
Surface Defects ◽  
Dye Sensitized Solar Cells ◽  
Charge Recombination ◽  
Defect States ◽  
Transport Pathway ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Defect states in the TiO2 nanoparticles can cause severe charge recombination and poor electron-transport efficiency when used as a photoanode in dye-sensitized solar cells (DSSCs). Herein, we report a simple and practical way to passivate the surface defects of TiO2 through hydrothermal treating with acetic acid and H2SO4, introducing a high percentage of 101 facets and sulfonic acid functional groups on the TiO2 surface. A high efficiency of 8.12% has been achieved, which is 14% higher than that of untreated TiO2 under the same condition. EIS results prove that the multiacid-treated TiO2 can promote electron transport and reduce charge recombination at the interface of the TiO2 and electrolyte. This work provides an efficient approach to engineer the electron-transport pathway in DSSCs.

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 Interacting Ru(bpy) 3 2 + Dye Molecules and TiO2 Semiconductor in Dye-Sensitized Solar Cells

Mathematics ◽  
2020 ◽  
Vol 8 (5) ◽  
pp. 841 ◽  
Author(s):  
Sasipim Putthikorn ◽  
Thien Tran-Duc ◽  
Ngamta Thamwattana ◽  
James M. Hill ◽  
Duangkamon Baowan
Keyword(s):  
Solar Cells ◽  
Continuum Model ◽  
Minimum Energy ◽  
Dye Sensitized Solar Cells ◽  
Nanoporous Structure ◽  
Dye Molecules ◽  
Energy Position ◽  
Alternative Source ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Solar energy is an alternative source of energy that can be used to replace fossil fuels. Various types of solar cells have been developed to harvest this seemingly endless supply of energy, leading to the construction of solar cell devices, such as dye-sensitized solar cells. An important factor that affects energy conversion efficiency of dye-sensitized solar cells is the distribution of dye molecules within the porous semiconductor (TiO 2 ). In this paper, we formulate a continuum model for the interaction between the dye molecule Tris(2,2 ′ -bipyridyl)ruthenium(II) (Ru(bpy) 3 2 + ) and titanium dioxide (TiO 2 ) semiconductor. We obtain the equilibrium position at the minimum energy position between the dye molecules and between the dye and TiO 2 nanoporous structure. Our main outcome is an analytical expression for the energy of the two molecules as a function of their sizes. We also show that the interaction energy obtained using the continuum model is in close agreement with molecular dynamics simulations.

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