Fabrication of Ni-doped TiO2 thin film photoelectrode for solar cells

Ranjitha, A.; Muthukumarasamy, N.; Thambidurai, M.; Velauthapillai, Dhayalan; Balasundaraprabhu, R.; Agilan, S.

doi:10.1016/j.solener.2014.02.034

Cited by 28 publications

(9 citation statements)

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“…Much work has been done on modifying titania with transition metal cations, such as Fe, V, Co, Ni, Mn, Cr, Cu, Ag, W, etc. [ 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 ]. Promising results have also been achieved by modifying titania with non-metal elements, such as N, S, C, B, etc.…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal Synthesis of Rare-Earth Modified Titania: Influence on Phase Composition, Optical Properties, and Photocatalytic Activity

et al. 2019

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In order to expand the use of titania indoor as well as to increase its overall performance, narrowing the band gap is one of the possibilities to achieve this. Modifying with rare earths (REs) has been relatively unexplored, especially the modification of rutile with rare earth cations. The aim of this study was to find the influence of the modification of TiO2 with rare earths on its structural, optical, morphological, and photocatalytic properties. Titania was synthesized using TiOSO4 as the source of titanium via hydrothermal synthesis procedure at low temperature (200 °C) and modified with selected rare earth elements, namely, Ce, La, and Gd. Structural properties of samples were determined by X-ray powder diffraction (XRD), and the phase ratio was calculated using the Rietveld method. Optical properties were analyzed by ultraviolet and visible light (UV-Vis) spectroscopy. Field emission scanning electron microscope (FE-SEM) was used to determine the morphological properties of samples and to estimate the size of primary crystals. X-ray photoelectron spectroscopy (XPS) was used to determine the chemical bonding properties of samples. Photocatalytic activity of the prepared photocatalysts as well as the titania available on the market (P25) was measured in three different setups, assessing volatile organic compound (VOC) degradation, NOx abatement, and water purification. It was found out that modification with rare earth elements slows down the transformation of anatase and brookite to rutile. Whereas the unmodified sample was composed of only rutile, La- and Gd-modified samples contained anatase and rutile, and Ce-modified samples consisted of anatase, brookite, and rutile. Modification with rare earth metals has turned out to be detrimental to photocatalytic activity. In all cases, pure TiO2 outperformed the modified samples. Cerium-modified TiO2 was the least active sample, despite having a light absorption tail up to 585 nm wavelength. La- and Gd-modified samples did not show a significant shift in light absorption when compared to the pure TiO2 sample. The reason for the lower activity of modified samples was attributed to a greater Ti3+/Ti4+ ratio and a large amount of hydroxyl oxygen found in pure TiO2. All the modified samples had a smaller Ti3+/Ti4+ ratio and less hydroxyl oxygen.

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Section: Introductionmentioning

confidence: 99%

Hydrothermal Synthesis of Rare-Earth Modified Titania: Influence on Phase Composition, Optical Properties, and Photocatalytic Activity

et al. 2019

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“…42 The introduction of such energy states in the forbidden band gap of TiO 2 film promotes the charge transition amid different energy levels. [43][44][45] The DSSCs efficiency is calculated from Figure 5 by using the following relation. 44 η % ð Þ=…”

Section: Band Gap Analysismentioning

confidence: 99%

“…[43][44][45] The DSSCs efficiency is calculated from Figure 5 by using the following relation. 44 η % ð Þ=…”

Section: Band Gap Analysismentioning

confidence: 99%

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Improved photovoltaic properties of dye sensitized solar cell by irradiations of Ni ²⁺ ions on Ag‐doped TiO ₂ photoanode

et al. 2021

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Using the dip-coating technique we report here the synthesis of pure and 1% Ag-doped TiO 2 thin films. The 1% Ag-doped TiO 2 films are then irradiated with Ni ions at different (2 × 10 14 , 4 × 10 14 , and 6 × 10 14 ions/cm 2 ) fluences. Structural analysis carried out using the X-ray diffraction technique revealed the evolution of anatase phase in addition to rutile traces. The corresponding lattice parameters (a and c) first increases with doping and irradiation of Ni ions up to 4 × 10 14 ions/cm 2 which then decreases on a further increase of fluence.UV-visible spectroscopy shows a decreasing behavior of band gap energy (E g ) with doping. The minimum value of E g is 3.1 eV which is obtained when 4 × 10 14 ions/cm 2 of Ni ions are implanted on 1% Ag-TiO 2 film. These films are tested as a photoanode for dye sensitized solar cells (DSSCs) and calculate their efficiency. The cell formed by Ni ions implanted on 1% Ag-TiO 2 as photoanode with fluence of 4 × 10 14 ions/cm 2 showed the highest current density of 6.13 mA/cm 2 with maximum efficiency of 3.01%.

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“…However, the performance of DSSC is constrained due to its high electron recombination with the electrolyte, and low electron mobility and transport properties. Therefore, many alternatives have been explored such as substituting TiO 2 photoanode with other metal oxide [5]- [7], modifying the morphology of TiO 2 by increasing dense layers (known as hybrid) [8]- [9], or added a doping [7], [11] as replacements of nanoparticles to accelerate electron transfer. To improve the performance of DSSC, zinc oxide (ZnO), magnesium oxide (MgO), aluminum oxide (Al 2 O 3 ), and silicon dioxide (SiO 2 ) are the possible oxide materials which able to reduce the electron recombination [5], [10].…”

Section: Introductionmentioning

confidence: 99%

Applications of Factorial Design in Dye-Sensitized Solar Cells with Titanium-Silicon Dioxide as Photoanode

Asshaari*,

Abdullah,

Jedi

et al. 2019

IJITEE

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Titanium-silicon dioxide (TiO2-SiO2) nanocomposite thin films have been synthesized by sol-gel process as a photoanode in dye-sensitized solar cells (DSSC). The photovoltaic performances, i.e. JSC, VOC, FF, and η were explored using I–V measurement. The effects of electrolyte type (iodolyte, PAN-based gel polymer: E1 and E2) and the preparation of photoanode (annealed temperature) on the performance of DSSC was significantly studied using factorial design methodology. It reveals that in factorial design, both main factors (electrolyte type and annealed temperature) and the interaction between these two factors were found statistically significant. It means that the effects of electrolyte type and annealed temperature, are the significant variables influencing the energy efficiency, as well as the two-factor interactions of electrolyte type and annealed temperature. The determination coefficient (R2 ) also in good alliance, which confirms that there exist a high association between these factors with the energy efficiency of DSSC. The optimum conditions of the energy efficiency occurs for a PAN-based gel polymer E2 when the photoanode was annealed at 350C, exhibits a highest energy efficiency of 1.5%.

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Fabrication of Ni-doped TiO2 thin film photoelectrode for solar cells

Cited by 28 publications

References 40 publications

Hydrothermal Synthesis of Rare-Earth Modified Titania: Influence on Phase Composition, Optical Properties, and Photocatalytic Activity

Hydrothermal Synthesis of Rare-Earth Modified Titania: Influence on Phase Composition, Optical Properties, and Photocatalytic Activity

Improved photovoltaic properties of dye sensitized solar cell by irradiations of Ni ²⁺ ions on Ag‐doped TiO ₂ photoanode

Applications of Factorial Design in Dye-Sensitized Solar Cells with Titanium-Silicon Dioxide as Photoanode

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Fabrication of Ni-doped TiO2 thin film photoelectrode for solar cells

Cited by 28 publications

References 40 publications

Hydrothermal Synthesis of Rare-Earth Modified Titania: Influence on Phase Composition, Optical Properties, and Photocatalytic Activity

Hydrothermal Synthesis of Rare-Earth Modified Titania: Influence on Phase Composition, Optical Properties, and Photocatalytic Activity

Improved photovoltaic properties of dye sensitized solar cell by irradiations of Ni 2+ ions on Ag‐doped TiO 2 photoanode

Applications of Factorial Design in Dye-Sensitized Solar Cells with Titanium-Silicon Dioxide as Photoanode

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Improved photovoltaic properties of dye sensitized solar cell by irradiations of Ni ²⁺ ions on Ag‐doped TiO ₂ photoanode