Characteristics of diluted magnetic semiconductor based on Mn-doped TiO2 nanorod array films

Al-Jawad, Selma M. H.; Ismail, Mukhlis M.; Ghazi, Sara F.

doi:10.1007/s10008-020-04823-8

Cited by 9 publications

(3 citation statements)

References 27 publications

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“…ROS plays a crucial role in the degradation of organic pollutants by attacking the organic molecules and breaking them down into smaller, less harmful molecules [ 38 ]. Secondly, Mn doping increases the surface area and pore volume of TiO 2 nanoparticles, which enhances the adsorption of MB onto the surface of nanoparticles, leading to an increase in the efficiency of photocatalytic degradation [ 39 ].…”

Section: Resultsmentioning

confidence: 99%

Defects oriented hydrothermal synthesis of TiO2 and MnTiO2 nanoparticles as photocatalysts for wastewater treatment and antibacterial applications

Awan,

Khalid,

Ahmad

et al. 2024

Heliyon

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Section: Resultsmentioning

confidence: 99%

Defects oriented hydrothermal synthesis of TiO2 and MnTiO2 nanoparticles as photocatalysts for wastewater treatment and antibacterial applications

Awan,

Khalid,

Ahmad

et al. 2024

Heliyon

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“…5,6 One of the most important chemical methods used in preparing nanoparticles is the hydrothermal method, as this method provides the preparation of different forms of nanostructures, through which it is possible to control the morphology of nanoparticles by choosing working conditions such as temperature, pressure, reaction time, and concentrations of reactants. [7][8][9][10][11][12] Both the nonpolar tetragonal and ferroelectric rhombohedral phases appear over a common temperature range. 13,14 Studying the electrical conductivity of the ferroelectric NBT is very important because it has direct effects on other properties such as piezoelectricity and pyroelectricity.…”

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confidence: 99%

Influence of NaOH Concentration on Structural, Morphological, Optical, and Electrical Characterization of Perovskite Sodium Bismuth Titanate Prepared by Hydrothermal Method

Nahedh,

Salman,

Ismail

2024

ECS J. Solid State Sci. Technol.

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The hydrothermal method successfully prepares a lead-free sodium bismuth titanate (NBT) perovskite film. The prepared films were studied structurally, and morphologically using X-ray diffraction, and field-emission scanning electron microscopy (FESEM), respectively. Varying the concentration of NaOH showed a noticeable effect on the properties studied. Good crystallization of NBT perovskite films without impurities was obtained at 18 and 20 M concentrations, where the crystalline size was 14 nm according to the Scherer equation. Also, when varying the concentration of NaOH, a similar film thickness was obtained through a cross-section of the FESEM images. It was observed that there was a difference in the intensity of the peaks of the photoluminescence spectra of the prepared films with a change in the concentration of NaOH, which confirms a change in the concentration of oxygen vacancies. The activation energy of the prepared films was deduced from the Arrhenius plot, as it showed small values in the films prepared with a low concentration of NaOH. The results showed that the maximum value of mobility of NBT films was at 20 M of NaOH concentration through the Hall Effect.

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“…The hydrothermal method has been widely utilized to synthesize high-quality nanocrystals with distinctive morphology crystal structure and low-cost manufacture. 38,39 As per the literature survey, a few investigations have been done to prepare CZTS powder by the hydrothermal method and then deposited it on substrates via spin coating, doctors blade, and printing which is two steps method with fewer adherent and poor uniformity thin film for photovoltaic applications. (S. M. Camara et al prepared CZTS powder for photoelectrochemical (PEC) cells and J. P. Sawant et al prepared CZTS powder for dye-sensitized solar cells).…”

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Toward Phase Pure CZTS Film-Based Solar Cell Prepared by the One-Step Hydrothermal Method: Influence of Copper Concentration

Allawi,

Al-Jawad

2023

ECS J. Solid State Sci. Technol.

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Herein, the first paper for preparing Cu2ZnSnS4 film using EDTA as a complex agent by one-step hydrothermal method. The efficient Molybdenum oxide (MoO3) layer was also grown by the same step as preparing the Cu2ZnSnS4 film. The effects of different copper concentrations on the structural, optical, and electrical properties were studied. X-ray diffraction and Raman analyses confirmed the formation of polycrystalline kesterite phase Cu2ZnSnS4 films with preferred orientation along (112) plane and showed that structure property alters with copper concentration: at lower copper concentration single kesterite phase Cu2ZnSnS4 was formed, while with increasing copper concentration kesterite Cu2ZnSnS4 and secondary phases were formed. Field emission scanning electron microscopy revealed a mixture of micro-flower and a thin network of nanoflakes morphology. In addition, it showed as copper concentration changes the grain size of micro-flower and thickness of flakes change. UV-visible analysis showed high and broad absorbance spectra with high absorption coefficient values of more than 104 cm−1 in visible and infrared regions.also, predicted the band gap of single-phase Cu2ZnSnS4 film equal to 1.4 eV. Photoluminescence analysis demonstrated a single emission peak located at 1.55 eV which is quite near to the band gap of kesterite Cu2ZnSnS4. Hall measurement showed the single phase sample is a p-type semiconductor with a resistivity of 5 Ω cm, a charge carrier concentration of 7.5 × 1016 cm−3 and mobility of 16 cm2 Vs−1. Finally, a heterojunction solar cell was made with Mo foil/MoO3/CZTS/Zn0.35Cd0.65S/ZnO/Al configuration. A photovoltaic conversion efficiency of (2.17%) was attained under 100 mW cm−2 with an open-circuit voltage of (0.432) V, short-circuit current density of (13.4) mA cm−2 and a fill factor of (37.5%).

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Characteristics of diluted magnetic semiconductor based on Mn-doped TiO2 nanorod array films

Cited by 9 publications

References 27 publications

Defects oriented hydrothermal synthesis of TiO2 and MnTiO2 nanoparticles as photocatalysts for wastewater treatment and antibacterial applications

Defects oriented hydrothermal synthesis of TiO2 and MnTiO2 nanoparticles as photocatalysts for wastewater treatment and antibacterial applications

Influence of NaOH Concentration on Structural, Morphological, Optical, and Electrical Characterization of Perovskite Sodium Bismuth Titanate Prepared by Hydrothermal Method

Toward Phase Pure CZTS Film-Based Solar Cell Prepared by the One-Step Hydrothermal Method: Influence of Copper Concentration

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