Studying the Effect of Annealing Temperature on some Physical Properties of In2O3 Thin Films

Mohammed, Duaa; Jawad, Muslim

doi:10.30684/etj.36.2b.5

Cited by 2 publications

(2 citation statements)

References 8 publications

(13 reference statements)

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“…From Figures (7), (8), and ( 11), the intensity of the permeability spectrum of the annealed films (heat treated) is lower compared to that of the unplasticized films. This decrease is due to the diffusion of oxygen atoms within the crystalline structure and the creation of positional levels within the energy gap, which is consistent with the results of the researchers in [18,19]. On the other hand, Figures (9) and (10) indicate that the intensity of the transmittance spectrum of the annealed films (heat treated) increases compared to that of the unplasticized films, and this is due to the increase in the degree of crystallinity of the membrane structures due to the increase in the grain size, which is consistent with the results of the researchers in [20].…”

Section: Journal Of University Of Anbar For Pure Science (Juaps)supporting

confidence: 92%

“…Moreover, for the power of (35W) and the thickness of (195.2nm), it was (2.50 eV). Therefore, the energy gap decreases with the increase in the density of the local states with the increase in thickness, which results in a decrease in the energy gap, which is consistent with the results of the researchers in [26], and the increase in the density of states is caused by defects due to the presence of oxygen in the deposited tantalum oxide films that works to create local levels within the energy structure, which is consistent with the results of the researchers in [19].…”

Section: -3-3) Optical Energy Gapsupporting

confidence: 89%

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Antibacterial activity of NiTi alloy with sputtered tantalum

Alsaaidi,

Al-rawi,

Khalaf

2023

JUAPS

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A study was conducted on the use of the Mactrontronic Sputtering (DC) plasma technique by sprinkling tantalum metal (Ta) and depositing it on shape-memory nickeltitanium (NiTi) alloy and glass substrates in the presence of oxygen and argon gases. As a result, a coating of tantalum oxide (Ta 2 O 5 ) deposited on the (NiTi) alloy was obtained. The change of the atomization plasma energy on the size of the precipitated oxide particles (Ta 2 O 5 ) and its effect on the structural properties was discussed. For the membrane, the Xray diffraction (XRD) tests showed that the films prepared at energies of (10, 15, 25, 30, and 35 watts) showed an amorphous structure, and the (AFM) results confirmed that the thinly deposited films consisted of spherical particles. Moreover, the results of the optical properties study showed the effect of annealing (heat treatment), whereby the annealing improved all the optical parameters of the deposited films. In addition, the contact angle measurements showed that the (Ta 2 O 5 ) films exhibited hydrophilic characteristics and increased wettability for the (NiTi) alloy, which normally contributes to enhancing its resistance to bacteria and facilitating cell connection. Bacterial antimicrobial assays demonstrated that the deposited membrane exhibited antibacterial activity against both negative and positive bacteria. In particular, the test results revealed that the (NiTi) alloy samples coated with (Ta 2 O 5 ) membrane had a higher bacteria-killing percentage for both negative and positive bacteria compared to the uncoated samples.

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Section: Journal Of University Of Anbar For Pure Science (Juaps)supporting

confidence: 92%

Section: -3-3) Optical Energy Gapsupporting

confidence: 89%

Antibacterial activity of NiTi alloy with sputtered tantalum

Alsaaidi,

Al-rawi,

Khalaf

2023

JUAPS

View full text Add to dashboard Cite

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Interplay between the heat treatment and structural and optical properties of Nb2O5 thin films

Mohamed,

El-Raheem,

Ahmed

2024

J Mater Sci: Mater Electron

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Thin films of Nb2O5 were synthesized by RF sputtering. The effect of annealing, at different temperatures (100, 150, 200, 250, 300, 350, and 400 °C), on the structural and optical properties was studied. The crystallinity and structural characteristics of the Nb2O5 thin films were examined employing the X-ray diffraction (XRD) and scanning electron microscopy (SEM). XRD and SEM analyses showed an amorphous nature for the as-deposited and annealed samples from 100 to 350 °C and crystalline structure for the annealed sample at 400 °C. The high values of the transmittance and low reflection make these films used as a window layer in solar cell systems. Upon increasing annealing temperature, the energy band gap Eg increased from 4.039 to 4.175 eV. Eg high values again make these films suitable to be used as a window layer in solar cell system. Urbach tail, EU, decreased with increasing annealing temperature. The refractive index showed the normal dispersion. The dispersion energies were found to have the same behavior with respect to annealing temperature, besides, the single oscillator energy Eₒ had a lower value compared to the dispersion energy Ed. The plasma frequency $${\omega }_{p}$$ ω p was found to increase with annealing temperature. The first and third optical moments had peak values depending on the incident photon energy.

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Studying the Effect of Annealing Temperature on some Physical Properties of In2O3 Thin Films

Cited by 2 publications

References 8 publications

Antibacterial activity of NiTi alloy with sputtered tantalum

Antibacterial activity of NiTi alloy with sputtered tantalum

Interplay between the heat treatment and structural and optical properties of Nb2O5 thin films

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