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

TiO2nanotubes were successfully synthesized by anodization method of Ti foils. The electrolyte was composed of ethylene glycol (EG), ammonium fluoride (0.3%wt NH4F) and de-ionized water (2% vol H2O). A constant DC power supply of 50 V was used during anodization with anodizing times of 1 hour, 2 hours, 4 hours and 6 hours. The samples were annealed at 450 °C for 2 hours. The TiO2nanotubes were studied by X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). Structural analysis revealed the presence of pure Ti, and the crystalline anatase phase due to transformation of amorphous TiO2after annealing. The morphology of TiO2nanotube sizes showed an increase in tube diameter with anodizing time from approximately 50 nm to 200 nm. However, the efficiency of dye-sensitized solar cells increased with anodizing times up to a maximum of 5.74 % for anodizing time of 4 hours.

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The Characterization of Nanocrystalline Dye-Sensitized Solar Cells with Flexible Metal Substrates by Electrochemical Impedance Spectroscopy

Journal of The Electrochemical Society ◽

10.1149/1.2374943 ◽

2007 ◽

Vol 154 (1) ◽

pp. B68 ◽

Cited By ~ 40

Author(s):

Yongseok Jun ◽

Man Gu Kang

Keyword(s):

Solar Cells ◽

Electrochemical Impedance Spectroscopy ◽

Impedance Spectroscopy ◽

Electrochemical Impedance ◽

Dye Sensitized Solar Cells ◽

Metal Substrates ◽

Dye Sensitized ◽

Flexible Metal ◽

Sensitized Solar Cells

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Synthesis and Characterization of Various Doped TiO2 Nanocrystals for Dye-Sensitized Solar Cells

ACS Omega ◽

10.1021/acsomega.0c01614 ◽

2021 ◽

Vol 6 (5) ◽

pp. 3470-3482

Author(s):

Raghvendra S. Dubey ◽

Sandesh R. Jadkar ◽

Ajinkya B. Bhorde

Keyword(s):

Solar Cells ◽

Dye Sensitized Solar Cells ◽

Synthesis And Characterization ◽

Tio2 Nanocrystals ◽

Doped Tio2 ◽

Dye Sensitized ◽

Sensitized Solar Cells

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

Materials ◽

10.3390/ma14092150 ◽

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.

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