Effect of SiO2 ratio  on electrical Properties of SiO2:ZnO Thin Films Prepared by pulsed laser depositions (PLD) technique

Al‐Samarai, Abdul-Majeed E.; Majeed, Zuheer N.; Mohammed, Ghuson H.

doi:10.25130/j.v23i10.761

Cited by 2 publications

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“…Figure (6) show different laser pulsed energies. The optical energy gap, also known as the gap for direct electronic transitions permitted in CdO thin films, was determined using the Tauc equation [21] with (r = ½) by drawing a straight line tangent to the curve between (αhν) 2 and (hν). The incident photon, continuing the straight line until it meets the photon's energy axis at ((αhν) 2 = 0).…”

Section: B C D Amentioning

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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Section: B C D Amentioning

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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“…Pulse laser deposition has achieved a great success due to its low costs compared to other technologies. It is used in many types of materials: metals, electrical insulators, semiconductors, polymers, ferroelectric and organic materials [4,5]. At this time, a recent research is heading towards the field of transparent conducting dioxides (TCOs) because of their technological importance, and their multiple uses in solar cells, infrared detectors, and transparent transistors [6,7].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Copper Doping on Some Structural and Electrical Properties of Titanium Dioxide Nanofilms

Razooqi,

Majeed

2023

Tikrit J. Pure Sci.

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Thin films of titanium dioxide (TiO2) with several copper ratios were deposited on glass substrates using pulsed laser deposition (PLD) for pure and doped samples (TiO2 Pure, 1 % Cu, 2 % Cu, and 3 % Cu), energy (600 mJ), and frequency (6 Hz). X-ray diffraction (XRD) showed that the width of the peaks decreases with increasing the ratio of doping with copper. This leads to an increase in the crystal size and in the intensity of the copper peaks, as well as a gradual decrease in the intensity of the titanium dioxide peaks. The results of the atomic force microscope showed that increasing the inoculation percentage leads to an increase in the surface roughness and the average grain diameter, and thus an increase in the growth of the particle size. The electrical tests (Hall effect) showed that the prepared films are of (n-type) and that the concentration of carriers (n) increased with the doping ratio, while the mobility values (µH) decreased directly with the increase in copper. The electrical conductivity (DC) test showed an increase in the activation energy as a result of the increase in the copper inoculation percentage and thus the electrical conductivity increases.

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Effect of SiO2 ratio on electrical Properties of SiO2:ZnO Thin Films Prepared by pulsed laser depositions (PLD) technique

Cited by 2 publications

References 0 publications

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

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

The Effect of Copper Doping on Some Structural and Electrical Properties of Titanium Dioxide Nanofilms

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