Interconnected ZrO2 doped ZnO/TiO2 network photoanode for dye-sensitized solar cells

Hussein, Abdulmenan M.; Iefanova, Anastasiia; Koodali, Ranjit T.; Logue, Brian A.; Shende, Rajesh V.

doi:10.1016/j.egyr.2018.01.007

Cited by 33 publications

(16 citation statements)

References 55 publications

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“…The results indicate that probably the addition of ZrO 2 organic precursor inhibits the phase transformation of TiO 2 . Hussein et al [ 40 ] also noted that the application of substitutional ions of transition metals seems to inhibit anatase-to-rutile phase transformation even at elevated temperature. Okada et al [ 41 ] noted that when TiO 2 is doped with cations with valence lower than 4+, acceleration of its phase transformation is observed.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of Selected Mixed Oxide Materials with Tailored Photocatalytic Activity in the Degradation of Tetracycline

et al. 2021

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The elimination of antibiotics occurring in the natural environment has become a great challenge in recent years. Among other techniques, the photocatalytic degradation of this type of pollutant seems to be a promising approach. Thus, the search for new photoactive materials is currently of great importance. The present study concerns the sol–gel synthesis of mono, binary and ternary TiO2-based materials, which are used as active photocatalysts. The main goal was to evaluate how the addition of selected components—zirconium dioxide (ZrO2) and/or zinc oxide (ZnO)—during the synthesis of TiO2-based materials and the temperature of thermal treatment affect the materials’ physicochemical and photocatalytic properties. The fabricated mixed oxide materials underwent detailed physicochemical analysis, utilizing scanning-electron microscopy (SEM), X-ray diffraction (XRD), diffuse reflectance spectroscopy (DRS), energy-dispersive X-ray spectroscopy (EDS), low-temperature N2 sorption (BET model), X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR). The synthesized mixed oxide materials were used as photocatalysts in the heterogeneous photodegradation of tetracycline (TC). The physicochemical properties of the fabricated photocatalysts, including morphology, crystalline and textural structure, as well as the pH of the reaction system in the photocatalytic tests, were taken into account in determining their photo-oxidation activity. LC–MS/MS analysis was used to identify the possible degradation products of the selected antibiotic.

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Section: Resultsmentioning

confidence: 99%

Synthesis of Selected Mixed Oxide Materials with Tailored Photocatalytic Activity in the Degradation of Tetracycline

et al. 2021

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“…In dye-sensitized solar cells the ALD are especially used for fabrication of nanostructured cell electrodes (Garcia-Alonso et al , 2014), binding layer to enhance the interconnection of TiO 2 host-nanoparticles of photoelectrode and adhesion of photoelectrode with substrate (Hussein et al , 2018; Li et al , 2019). One of the undesirable factor in DSSCs is the electron recombination process that take place at the TCO/electrolyte interface, on the side of photoelectrode.…”

Section: Introductionmentioning

confidence: 99%

Atomic layer deposition of TiO₂blocking layers for dye-sensitized solar cells

Drygała

Szindler

Jonda

2020

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Purpose The purpose of this paper is to improve the efficiency of dye-sensitized solar cells (DSSCs) which present promising low-cost alternative to the conventional silicon solar cells mainly due to comparatively low manufacturing cost, ease of fabrication and relatively good efficiency. One of the undesirable factor in DSSCs is the electron recombination process that takes place at the transparent conductive oxide/electrolyte interface, on the side of photoelectrode. To reduce this effect in the structure of the solar cell, a TiO2 blocking layer (BL) by atomic layer deposition (ALD) was deposited. Design/methodology/approach Scanning electron microscope, Raman and UV-Vis spectroscopy were used to evaluate the influence of BL on the photovoltaic properties. Electrical parameters of manufactured DSSCs with and without BL were characterized by measurements of current-voltage characteristics under standard AM 1.5 radiation. Findings The TiO2 BL prevents the physical contact of fluorine-doped tin oxide (FTO) and the electrolyte and leads to increase in the cell’s overall efficiency, from 5.15 to 6.18%. Higher density of the BL, together with larger contact area and improved adherence between the TiO2 layer and FTO surface provide more electron pathways from TiO2 to FTO which facilitates electron transfer. Originality/value This paper demonstrates that the introduction of a BL into the photovoltaic device structure is an important step in technology of DSSCs to improve its efficiency. Moreover, the ALD is a powerful technique which allows for the highly reproducible growth of pinhole-free thin films with excellent thickness accuracy and conformality at low temperature.

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“…9 Some studies using metal oxide materials are TiO2/Cu2O all-oxide heterojunction solar cells produced by spray pyrolysis, 10 heterojunctions p-Cu 2 O/ZnO-n solar cell fabricated by spark plasma sintering, 5 and interconnected ZrO2 doped ZnO/TiO2 network photoanode for dye-sensitized solar cells. 11 Material engineering methods in the last two years of research require substantial investment. ZnO and TiO2 parallel to the Cu2O layer for p-n junction solar cells, however, have not been studied in terms of Current-Voltage characteristics.…”

Section: Introductionmentioning

confidence: 99%

CURRENT-VOLTAGE CHARACTERISTICS OF SOLAR CELLS p-n JUNCTION ZnO AND TiO2 PARAREL ON Cu2O LAYER

Fadlly

Putra

2020

Jurnal Fisika dan Aplikasinya

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Current-Voltage Characteristics of solar cells p-n junction ZnO and TiO2 parallel in the Cu2O layer has been determined using solar irradiation. Metal oxide has been used as a semiconductor material, such as ZnO and TiO 2 is an n-type semiconductor. The material has gap energy of 3.37 eV and 3.2 eV. Thermal oxidation is applied to commercial Cu plates for 60 minutes to produce Cu2O layers as p-type semiconductors. The process varies in temperature, namely 300, 400, and 500 °C. The process of thermal oxidation on Cu plates at a temperature of 300 °C increases the impurity in the Cu2O layer. The impurity layer is CuO. Then the CuO layer formed decreases with increasing temperature thermal oxidation. CuO layer increases the efficiency of solar cells p-n junction TiO2-ZnO parallel in the layer Cu2O. The results of measurements with sunlight showed that the TiO2-ZnO/Cu2O (300) samples had the highest solar cell efficiency, which was 0.28 %.

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Interconnected ZrO2 doped ZnO/TiO2 network photoanode for dye-sensitized solar cells

Cited by 33 publications

References 55 publications

Synthesis of Selected Mixed Oxide Materials with Tailored Photocatalytic Activity in the Degradation of Tetracycline

Synthesis of Selected Mixed Oxide Materials with Tailored Photocatalytic Activity in the Degradation of Tetracycline

Atomic layer deposition of TiO₂blocking layers for dye-sensitized solar cells

CURRENT-VOLTAGE CHARACTERISTICS OF SOLAR CELLS p-n JUNCTION ZnO AND TiO2 PARAREL ON Cu2O LAYER

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Interconnected ZrO2 doped ZnO/TiO2 network photoanode for dye-sensitized solar cells

Cited by 33 publications

References 55 publications

Synthesis of Selected Mixed Oxide Materials with Tailored Photocatalytic Activity in the Degradation of Tetracycline

Synthesis of Selected Mixed Oxide Materials with Tailored Photocatalytic Activity in the Degradation of Tetracycline

Atomic layer deposition of TiO2blocking layers for dye-sensitized solar cells

CURRENT-VOLTAGE CHARACTERISTICS OF SOLAR CELLS p-n JUNCTION ZnO AND TiO2 PARAREL ON Cu2O LAYER

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Atomic layer deposition of TiO₂blocking layers for dye-sensitized solar cells