Morphological and optical properties of Mg1-xCdSx nanostructured thin films

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MgO Nanostructured thin films with different thicknesses (200, 400, and 600 nm) have been deposited by the chemical spray pyrolysis technique. The results confirm that the structure, morphology, optical, and electrical properties were all affected by the thickness of the film. MgO films' physical properties were examined using (XRD), (FE-SEM), (EDX), (AFM), (UV-Vis spectrophotometer), and the Hall Effect. According to the structural analysis, the films have a cubic magnesium oxide polycrystalline structure, with a preferred orientation (002). The average Crystalline Size and optical band gap are found in the range (20.79-18.99) nm and (3.439-3.162) eV respectively with an increase in thickness. The surface morphology of the films reveals that they are free of crystal defects such as holes and voids, as well as homogeneous and uniform. The EDS patterns show that the as-grown films contain magnesium and oxygen. The Hall Effect shows that electrical conductivity decreases with thickness. The experimental results show that film thickness influences the physical properties of as-grown MgO thin films and that thicker films can be used as an absorber layer in solar cell applications.

Section: Optical Propertiesmentioning

confidence: 80%

Section: Structural and Morphological Characteristicsmentioning

confidence: 99%

Influence of Thickness on Some Physical Characterization for Nanostructured MgO Thin Films

Al-Timimi,

Albanda,

Abdullah

2023

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“…It is important to note that the specific FTIR spectra of CMC: PVP doped with MgO nanoparticles may vary depending on the specific doping concentration and preparation method used [22]. When MgO nanoparticles were added, the images showed that the reinforced polymeric films had irregular and rougher surfaces and high surface porosity compared to the films before cementation, and this is attributed to the hydrogen bonding resulting from the active carboxyl and hydroxyl Functional groups [23,24]. This irregular, rough, and high porosity of the surface enhances the adsorption Chemistry of the prepared overlapping films [25].…”

Section: Resultsmentioning

confidence: 99%

Enhancement in Some Physical Properties of (PVP: CMC) Blend by the addition of MgO

Albanda,

Fakralden,

Hassan

2023

Self Cite

This research study explores the effects of adding MgO nanoparticles to a polymeric blend composed of 50% PVP and 50% CMC. The blend was prepared using MgO nanoparticles (0.2%, 4%, and 6%) and varying processing conditions. The structural, optical, and electrical properties of the resulting blend were analyzed to determine the impact of the added nanoparticles on the blend's properties. Results showed that the addition of nanoparticles significantly improved the structural, optical, and electrical properties of the polymeric blend. Specifically, the energy gap is 4.224 eV for (PVA: CMC) film and increased to 3.432 eV for (PVA: CMC-6% MgO), the light transmission and reflection properties were enhanced. Additionally, the conductivity of the blend was increased, making it suitable for various applications, including optoelectronics, sensors, and biomedical devices. Overall, this study demonstrates the potential of adding nanoparticles to polymeric blends to improve their properties and highlights the importance of optimizing processing conditions to achieve the desired properties for specific applications.

“…Figure 8(b) illustrates the imaginary dielectric constant, with the highest value of 0.384 observed at a photon energy of 1.3 eV for the Pure MgO film, and the lowest value of 0.023 observed at the photon energy of 0.384 eV for the 70%MgO:30%SnO 2 film. In general, both the real and imaginary dielectric constants exhibited a change in the behavior with an increase in the doping ratio [44,45] .…”

Section: Figure 2 Ftir Curve Of Synthesized Samplesmentioning

confidence: 97%

Enhancements of Structural and Optical Properties of MgO: SnO2 Nanostructure Films

Ayoub,

AL-Timimi,

Abdullah

2023

This study investigates the structural and optical properties of MgO:SnO2 nanoparticles using the Chemical precipitation method, The thin films were deposited by the spin coating technique on glass substrates. X-ray diffraction analysis proved the crystalline structure of prepared thin films, with the peaks corresponding to the (110), (101), (200), (211), and (220) planes, with the tetragonal SnO2 crystal structure, Fourier transforms infrared (FTIR), and scanning electron microscope (SEM) used to characterize the functional groups, shape, and dimensions of synthesized metal oxide nanoparticles. The optical properties of the films were studied by UV-Vis spectroscopy, and the bandgap energy was estimated to be in the range of (3.9 - 3.4 eV). The refractive index and extinction coefficient of the films were also determined, and the results indicated that the films had good transparency in the visible region, The study concludes that MgO:SnO2 thin films obtained by spin coating technique have potential applications in optoelectronics and gas sensors.