Influence of Laser Energy on the Structural and Optical Properties of (CdO):(CoO) Thin Films Produced by Laser-Induced Plasma (LIP)

Aadim, Kadhim A.; Shehab, Maryam M.

doi:10.30723/ijp.v19i49.662

Cited by 5 publications

(3 citation statements)

References 17 publications

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“…Compared to the favoured orientation (111), the intensities of the orientations (220) and (311) are low, and they rise somewhat when the laser energy increases from 400 to 700 mJ. This is in line with published studies [25,26]. At 700 mJ, the peak intensity increased, indicating that with increased laser energies, the crystallisation process improves and crystallite size increases.…”

Section: X-ray Diffraction Resultssupporting

confidence: 88%

Study of the characterizationn of CdTe thin films prepared by the pulsed laser deposition technique with different laser energies

Kamel¹,

Aadim²,

Kadhim³

2023

Adv. Nat. Sci: Nanosci. Nanotechnol.

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This research studied the effects of different laser energies on structural and optical properties. We prepared CdTe thin films by PLD technique using an Nd:YAG laser with a wavelength of 1064 nm and different energies (400, 500, 600, and 700 mJ). The practical experiments were carried out at a temperature of 200 °C. XRD results revealed that all the prepared thin films have polycrystalline structures and cubic systems with average crystalline sizes of 34, 42, 54, and 57 nm for 400, 500, 600, and 700 mJ, respectively. We observed that the optical energy gap of CdTe thin films decreases with the increase of laser energy (1.87–1.58 eV). The topography of the surfaces of CdTe thin films deposited on glass substrates was studied by the AFM technique, and it was shown that the average diameter of all CdTe films increases with increasing laser energies. The mentioned properties were studied for the application of this thin film as the absorber layer in constructing a solar cell.

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Section: X-ray Diffraction Resultssupporting

confidence: 88%

Study of the characterizationn of CdTe thin films prepared by the pulsed laser deposition technique with different laser energies

Kamel¹,

Aadim²,

Kadhim³

2023

Adv. Nat. Sci: Nanosci. Nanotechnol.

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“…The calculation of the optical absorption coefficient (α) encompasses several variables, such as E g , incident photon energy measured in electron volts (eV), material structure (B), and the index (r) that characterizes the optical absorption process, as delineated by eq. 2 [46,47]. This relationship exhibits a linear dependence, suggesting the presence of permissible direct transitions.…”

Section: Optical Propertiesmentioning

confidence: 90%

Preparation and Study the Properties of PVDF/PEO/WO2 Hybrid Nanocomposite Thin Films Prepared by a Spin Coating Method

Bardan,

Abbas

2024

IJP

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In this work, using the spin coating method to create polyvinylidene fluoride (PVDF)/polyethylene oxide (PEO) thin films, the effects of nano-tungsten oxide (WO2) doping were investigated. The novelty of this research lies in its investigation of varying weight concentrations of WO2 nanoparticles (NPs) within the composite films. Comprehensive characterization techniques were employed, including structural analysis via X-ray diffraction (XRD), which revealed a clear and prominent peak in the XRD of the PVDF/PEO films, and the films' polycrystalline nature with tetragonal structures. The grain size was noted to increase with higher WO2 NPs doping. Field emission scanning electron microscopy (FE-SEM) showed hexagonal-like α-phase PVDF crystals and uniform distribution of WO2 NPs. Furthermore, Fourier-transform infrared spectroscopy (FTIR) confirmed the characteristics of PVDF/PEO and identified specific doping compounds, confirming successful incorporation. The optical transmittance spectra unveiled the films' optical band gap energy, optical transition types, and absorption characteristics, where novelty emerged as the band gap energy significantly increased from 3.0 eV to 3.64 eV with an increased WO2 NPs weight doping percentage, signifying profound electronic structure modifications and potential applications in optoelectronics and sensors.

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“…CdO is a transparent conductive oxides (TCO) family semiconductor material [6,7,8]. It has unusual properties such as a large energy gap extending between (1.5 -2.4 eV) [9], and apparent transparency. It has high reflectivity at the red region of the electromagnetic spectrum [10], high carrier mobility [11], and high electrical conductivity similar to negative-type metals (n-type) [4,9], as well as good fluorescence and many applications in electro-optical devices and display devices [12].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Laser Energy on the Structural, Optical and Electrical Properties of CdO Nanomaterials Generated Using (PLD) Technology, and Fabrication a Gas Sensor

Sabah Ahmed,

Jasim Mohammad,

H. Mohammed

2024

Tikrit J. Pure Sci.

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In this study, cadmium oxide (CdO) nanoparticles were synthesized using laser produced plasma technology with varying energy levels (300, 400, 500, and 600) mJ. These nanoparticles were deposited as a thin layers on glass surfaces (at a rate of 100 pulses). They were examined structurally and optically using a Scanning Electron Microscope (FESEM), X-Ray spectrophotometer (XRD), Atomic Force Microscope (AFM), and UV-visible spectrophotometer. The energy gap of the films varied from (1.5 eV) to (2.1 eV). We note that the energy gap decreases with increasing laser intensity. The FESEM and AFM images show a large anisotropy in the structure as the roughness varies with different energies. X-ray investigations indicated the presence of many crystals and a variation in the crystal structure of the film. The Figure of Merit (F.O.M) diagram revealed that the optimal energy was (400 mJ). A gas sensor for gas (NH3) was created, and the impact of increasing gas ratios and temperature on gas sensitivity over time was investigated.

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Influence of Laser Energy on the Structural and Optical Properties of (CdO):(CoO) Thin Films Produced by Laser-Induced Plasma (LIP)

Cited by 5 publications

References 17 publications

Study of the characterizationn of CdTe thin films prepared by the pulsed laser deposition technique with different laser energies

Study of the characterizationn of CdTe thin films prepared by the pulsed laser deposition technique with different laser energies

Preparation and Study the Properties of PVDF/PEO/WO2 Hybrid Nanocomposite Thin Films Prepared by a Spin Coating Method

The Effect of Laser Energy on the Structural, Optical and Electrical Properties of CdO Nanomaterials Generated Using (PLD) Technology, and Fabrication a Gas Sensor

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