Fabrication and Characterization of TiO2 Nanotubes for 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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Light Trapping in Dye Sensitized Solar Cells with Length-Modulated TiO2 Nanotubes

Materials Science Forum ◽

10.4028/www.scientific.net/msf.685.82 ◽

2011 ◽

Vol 685 ◽

pp. 82-86 ◽

Cited By ~ 1

Author(s):

Cheng Shen ◽

Ling Shen ◽

Jie Yang ◽

Jian Wei Shi ◽

Fei Xu ◽

...

Keyword(s):

Solar Cells ◽

Light Trapping ◽

Anatase Phase ◽

Dye Sensitized Solar Cells ◽

Visible Spectrum ◽

Photocurrent Density ◽

X Ray Diffraction ◽

X Ray ◽

Dye Sensitized ◽

Sensitized Solar Cells

Highly Oriented TiO2Nanotube (NT) Arrays Were Fabricated by Anodizing Ti Foils. the Morphology of the NT Arrays Was Characterized by Scanning Electron Microscope. by Adjusting the Anodization Time, the Lengths and Diameters of TiO2NT Arrays Changed from 6.7 to 19.5 μm, and 90 to 110 Nm, Respectively. as Confirmed by X-Ray Diffraction and Raman Spectra, the as-Anodized TiO2NTs Were Amorphous but Transformed into Anatase Phase after Annealing at 450°C for 3 H. Reflectance Spectrum of TiO2NT Arrays Showed that NT Layer of Longer Length Lowered the Reflectance in the Visible Spectrum because of Light Trapping Effects of NTs, Thus Enhancing Light Harvesting of NTs. Dye-Sensitized Solar Cells Were Fabricated Using TiO2NT Arrays with Different Tube-Lengths. Analysis of Photocurrent Density-Voltage (J-V) Characteristics Showed that Higher Photoconversion Efficiencies Were Achieved with Longer NT Lengths.

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

The Journal of Physical Chemistry C ◽

10.1021/jp404572y ◽

2013 ◽

Vol 117 (33) ◽

pp. 17033-17038 ◽

Cited By ~ 11

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

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The Influence of Titania Electrode Modification with Lanthanide Ions Containing Thin Layer on the Performance of Dye-Sensitized Solar Cells

International Journal of Photoenergy ◽

10.1155/2012/927407 ◽

2012 ◽

Vol 2012 ◽

pp. 1-8 ◽

Cited By ~ 23

Author(s):

Maciej Zalas ◽

Maciej Klein

Keyword(s):

Solar Cells ◽

Dye Sensitized Solar Cells ◽

Modified Electrodes ◽

Lanthanide Ions ◽

X Ray Diffraction ◽

Photoexcited Electron ◽

X Ray ◽

Dye Sensitized ◽

Back Transfer ◽

Sensitized Solar Cells

The lanthanide and scandium groups ions (except Pm and Ac) have been used as dopants of TiO2film in dye-sensitized solar cells. The X-ray diffraction spectra show that the modification has no influence on the structure of the electrode; however, the diffuse reflectance UV-Vis measurements exhibit significant changes in the electronic properties of modified electrodes. The appearance of energy barrier preventing photoexcited electron back-transfer was confirmed for Sc, Ce, Sm, Tb, Ho, Tm, and Lu modified cells. The best photoconversion performance of 8.88 and 8.80% was found for samples modified with Ce and Yb, respectively, and it was greater by 31.4 and 30.2% than that of a unmodified cell.

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Dye-Sensitized Solar Cells Based onBi4Ti3O12

International Journal of Photoenergy ◽

10.1155/2011/821045 ◽

2011 ◽

Vol 2011 ◽

pp. 1-6 ◽

Cited By ~ 5

Author(s):

Zeng Chen ◽

Shengjun Li ◽

Weifeng Zhang

Keyword(s):

Solar Cells ◽

Dye Sensitized Solar Cells ◽

Visible Region ◽

X Ray Diffraction ◽

Photovoltaic Properties ◽

X Ray ◽

Glass Substrates ◽

Dye Sensitized ◽

Response Range ◽

Sensitized Solar Cells

Bismuth titanate (Bi4Ti3O12) particles were synthesized by hydrothermal treatment and nanoporous thin films were prepared on conducting glass substrates. The structures and morphologies of the samples were examined with X-ray diffraction and scanning electron microscope (SEM). Significant absorbance spectra emerged in visible region which indicated the efficient sensitization of Bi4Ti3O12with N3 dye. Surface photovoltaic properties of the samples were investigated by surface photovoltage. The results further indicate that N3 can extend the photovoltaic response range of Bi4Ti3O12nanoparticles to the visible region, which shows potential application in dye-sensitized solar cell. As a working electrode in dye-sensitized solar cells (DSSCs), the overall efficiency reached 0.48% after TiO2modification.

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Synthesis and Characterizations of LaMnO3 Perovskite Powders Using Sol-Gel Method

10.21203/rs.3.rs-217058/v1 ◽

2021 ◽

Author(s):

Deniz ÇOBAN ÖZKAN ◽

Ahmet Türk ◽

Erdal Celik

Keyword(s):

Photoelectron Spectroscopy ◽

Sol Gel ◽

Dye Sensitized Solar Cells ◽

Ammonium Hydroxide ◽

X Ray Diffraction ◽

X Ray ◽

Dye Sensitized ◽

Gel Technique ◽

Sensitized Solar Cells

Abstract The present research demonstrates the synthesis and characterization of LaMnO3 perovskite powders using the sol-gel technique for dye-sensitive solar cell applications. With this respect, transparent solutions were prepared from La and Mn based precursors, distilled water and citric acid monohydrate. Ammonium hydroxide was incorporated into the La-Mn solution in order to neutralize/precipitate at 24oC for 1 hour in the air. The solution was allowed to evaporate on a hot plate device at 90 °C in the air. The obtained solutions were dried at 90 oC for 24 hours to form a xerogel structure, dried at 200 oC for 2 hours and consequently annealed at 500 and 850 oC for 2 hours in the air. Thermal, structural, microstructural, optical and magnetic properties of the powders were characterized through differential thermal analysis-thermogravimetry (DTA-TG), Fourier transform infrared (FTIR), X-ray diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), scanning electron microscopy (SEM), Malvern zeta sizer (PSD), UV-vis spectrometer and vibrating sample magnetometer (VSM). The obtained results indicate promise, especially the low band range, that LaMnO3 powders can be used in dye-sensitized solar cells and can positively affect performance and efficiency.

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Production and characterization of TiO2 nanoparticle thin films for its application in DSSCs

Metallurgical Research & Technology ◽

10.1051/metal/2020078 ◽

2020 ◽

Vol 117 (6) ◽

pp. 622

Author(s):

Saranyoo Chaiwichian ◽

Sumneang Lunput

Keyword(s):

Thin Films ◽

Dye Sensitized Solar Cells ◽

X Ray Diffraction ◽

X Ray ◽

Glass Substrates ◽

Dye Sensitized ◽

Photovoltaic Efficiency ◽

Transmission Electron ◽

Sensitized Solar Cells

In this research, TiO2 nanoparticle thin films were successfully prepared on FTO glass substrates through a doctor blade technique, and its application was tested in dye-sensitized solar cells (DSSCs) with different sensitizing dyes such as methylene blue (MB) and methyl orange (MO). The physicochemical properties of intended thin films were characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX) and UV-vis diffuse reflectance spectra (UV-vis DRS) techniques. The experimental results revealed that dipped TiO2 nanoparticle thin films into MB dye solution showed a higher photovoltaic efficiency (1.45%) when compared with the MO dye solution. A reasonable mechanism of DSSCs was also proposed.

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Preparation and Characterisation of ZnO/NiO Nanocomposite Particles for Solar Cell Applications

Journal of Nanotechnology ◽

10.1155/2016/4028062 ◽

2016 ◽

Vol 2016 ◽

pp. 1-5 ◽

Cited By ~ 12

Author(s):

S. Kerli ◽

Ü. Alver

Keyword(s):

Solar Cells ◽

Solar Cell ◽

Dye Sensitized Solar Cells ◽

Hexagonal Wurtzite Structure ◽

Morphological Properties ◽

X Ray Diffraction ◽

X Ray ◽

Dye Sensitized ◽

Ruthenium Dyes ◽

Sensitized Solar Cells

The mixture of ZnO and NiO effect on solar cell has been investigated. ZnO and NiO particles were produced by hydrothermal method and the produced particles were annealed at 500°C for 1 hour. Crystal structure and morphological properties of particles were examined by X-ray diffraction (XRD) and scanning electron microscope (SEM). XRD measurements showed that ZnO particles have a hexagonal wurtzite structure and NiO particles have a cubic structure. SEM results show that both ZnO and NiO particles are the form of nanoparticles. Dye-sensitized solar cells were fabricated by N-719 (Ruthenium) dyes and mixing ZnO/NiO particles in different ratios, 100/0, 50/50, and 0/100. It was observed that the solar cells made with ZnO have the highest performance with the efficiency of 0.542%. In addition, it was observed that when amount of NiO ratio increases in the mixture of ZnO/NiO, the efficiencies of DSSCs were observed to decrease.

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