4.5 Article

Investigating the optical, electronic, magnetic properties and DFT of NiO films prepared using RF sputtering with various argon pressures

Related references

Note: Only part of the references are listed.
Article Materials Science, Multidisciplinary

Copper oxide coatings deposited by reactive radio-frequency sputtering for solar absorber applications

Hind El Aakib et al.

Summary: In this study, submicron copper oxide coatings were deposited on glass and copper substrates using reactive radio-frequency sputtering. The properties of the coatings were examined using various characterization techniques. The films consisted of cupric oxide (Cu2O) at 10% oxygen, transforming into monoclinic CuO for higher oxygen flow rates. The morphology of the films was interpreted as a fish-scale-like growth mode, showing aligned grain strips and coalescing clusters. The films exhibited p-type semiconductor behavior with direct and indirect bandgaps for Cu2O and CuO, respectively. The crystallite size was observed to have a maximum at 30% oxygen flow rate, resulting in column-shaped structures with enhanced surface roughness and specific optical and thermal properties.

MATERIALS CHEMISTRY AND PHYSICS (2023)

Article Engineering, Electrical & Electronic

Influence of oxygen flux on properties of nickel oxide films prepared by magnetron sputtering for alternative hole-transporting layer in inverted perovskite solar cells

Hongyuan Cao et al.

Summary: In this study, a trace amount of oxygen was introduced to improve the conductivity of nickel oxide (NiOx) films, and it was found that the oxygen flux significantly affected the transparency and conductivity of the films. Increasing the oxygen flux led to smaller grain size, lower roughness, decreased transmittance, and a slight red shift of the band gap. The conductivity of the sputtered NiOx films also improved with increased oxygen flux, paving the way for the research of high efficiency NiO-based inverted perovskite solar cells (IPSCs).

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS (2023)

Article Materials Science, Multidisciplinary

Origin of high-frequency magnetic loss of Y3Fe5O12 single crystal thin films prepared with high-throughput screening by magnetron sputtering

Tingting Zhou et al.

Summary: In this study, yttrium iron garnet (YIG) single crystal nanofilms were deposited on Gd3Ga5O12 (GGG) (111) substrate via magnetron sputtering and annealing. The effects of sputtering gas pressure, power, and annealing temperature on microstructure, ferromagnetic resonance signal, and high-frequency magnetic loss were systematically investigated. Optimized conditions of 3 Pa argon pressure, 95 W sputtering power, and 800°C annealing temperature yielded YIG films with highest saturation magnetization, lowest linewidth, and maximum permeability of 25.54. The sources of high-frequency magnetic loss in the YIG film, including surface roughness, thickness, polycrystalline structure, oxygen vacancies, and anisotropic fields, were also studied. This study provides a method for preparing single-crystalline YIG films for potential applications in high-frequency microwave devices.

VACUUM (2023)

Article Materials Science, Multidisciplinary

Temperature-dependent optical characteristics of sputtered NiO thin films

M. Terlemezoglu et al.

Summary: Nickel oxide thin films were deposited using the radio frequency magnetron sputtering technique. The structural and morphological properties of the films were analyzed using X-ray diffraction (XRD), scanning electron microscopy, and energy-dispersive X-ray analysis. The films were found to have a cubic phase of nickel oxide with a preferential orientation of (200) direction, and the surface morphology was observed to be uniform and smooth. Optical properties of the films were studied using Raman spectroscopy and temperature-dependent transmittance spectroscopy, and the band gap energy of the films was obtained using Tauc relation and derivative spectroscopy techniques. Furthermore, the relationship between the band gap energy and temperature was investigated using the Varshni optical model, and the absolute zero band gap energy, rate of change of band gap energy, and Debye temperature were determined as 3.57 eV, - 2.77 x 10(-4) eV/K, and 393 K, respectively.

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING (2022)

Article Materials Science, Multidisciplinary

Effect of working pressure and post-annealing on structural, optical and electrical properties of p-type NiO thin films produced by RF magnetron sputtering technique

Fatih Senaslan et al.

Summary: Deposition of nickel oxide (NiO) films on glass and silicon substrates using radio-frequency (RF) sputtering at various working pressures resulted in improved crystal quality and increased crystal size with lower pressures. The annealed NiO films exhibited higher transmittance and increased band gap with decreasing working pressure. Electrical properties were affected by crystallinity and lattice defects, with all annealed films showing p-type conductivity. The lowest resistivity was achieved from the film deposited at 5 mTorr.

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING (2021)

Article Materials Science, Multidisciplinary

Investigation of optical, electronic, and magnetic properties of p-type NiO thin film on different substrates

Dogan Kaya et al.

Summary: In this study, high-quality p-type NiO semiconductor thin film was successfully prepared on different substrates using thermal oxidation and thermal evaporation methods, showing specific crystal phase structure and optical properties.

THIN SOLID FILMS (2021)

Article Materials Science, Multidisciplinary

Silicon rebirth: Ab initio prediction of metallic sp3-hybridized silicon allotropes

Konstantin P. Katin et al.

COMPUTATIONAL MATERIALS SCIENCE (2020)

Article Materials Science, Multidisciplinary

Grain-boundary structures and their impact on the electrical properties of NiO films deposited by reactive sputtering

Tatsuya Iwata et al.

THIN SOLID FILMS (2020)

Article Materials Science, Multidisciplinary

Effects of growth temperature on the photovoltaic properties of RF sputtered undoped NiO thin films

M. S. Jamal et al.

RESULTS IN PHYSICS (2019)

Article Materials Science, Multidisciplinary

Influence of RF sputtering power and thickness on structural and optical properties of NiO thin films

T. Potlog et al.

MATERIALS RESEARCH EXPRESS (2019)

Article Materials Science, Multidisciplinary

Control of the structural, electrical and optical properties of spin coated NiO films by varying precursor molarity

Anas A. Ahmed et al.

THIN SOLID FILMS (2019)

Article Chemistry, Physical

Oxygen partial pressure effects on the RF sputtered p-type NiO hydrogen gas sensors

Erdal Turgut et al.

APPLIED SURFACE SCIENCE (2018)

Article Engineering, Electrical & Electronic

Exchange Bias Induced by the Spin Glass-Like Surface Spins in Sputter Deposited Fe3O4 Thin Films

Muhammed P. Shameem et al.

IEEE TRANSACTIONS ON MAGNETICS (2017)

Article Engineering, Electrical & Electronic

Effects of annealing temperature on the structural, morphology, optical properties and resistivity of sputtered CCTO thin film

Mohsen Ahmadipour et al.

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS (2017)

Article Physics, Condensed Matter

Advanced capabilities for materials modelling with QUANTUM ESPRESSO

P. Giannozzi et al.

JOURNAL OF PHYSICS-CONDENSED MATTER (2017)

Article Engineering, Electrical & Electronic

Structural, surface morphology and optical properties of sputter-coated CaCu3Ti4O12 thin film: Influence of RF magnetron sputtering power

Mohsen Ahmadipour et al.

MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING (2017)

Article Materials Science, Multidisciplinary

Thickness dependent ferromagnetism in thermally decomposed NiO thin films

Patta Ravikumar et al.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS (2016)

Article Nanoscience & Nanotechnology

Assessment of crystallite size and strain of CaCu3Ti4O12 prepared via conventional solid-state reaction

Mohsen Ahmadipour et al.

MICRO & NANO LETTERS (2016)

Article Materials Science, Multidisciplinary

Effect of UV Laser Irradiation on the properties of NiO films and ZnO/NiO Heterostructures

Srikanth Itapu et al.

MRS ADVANCES (2016)

Article Materials Science, Multidisciplinary

Electronic, electrical and optical properties of undoped and Na-doped NiO thin films

Yus Rama Denny et al.

THIN SOLID FILMS (2015)

Article Materials Science, Multidisciplinary

Pseudopotentials periodic table: From H to Pu

Andrea Dal Corso

COMPUTATIONAL MATERIALS SCIENCE (2014)

Article Nanoscience & Nanotechnology

Effect of Ni2+ and O2- vacancies on the electrical and optical properties of nanostructured nickel oxide synthesized through a facile chemical route

G. Madhu et al.

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES (2014)

Review Physics, Condensed Matter

QUANTUM ESPRESSO: a modular and open-source software project for quantum simulations of materials

Paolo Giannozzi et al.

JOURNAL OF PHYSICS-CONDENSED MATTER (2009)

Article Chemistry, Multidisciplinary

Preparation, Microstructure and Optical Absorption Behaviour of NiO Thin Films

Amit Kumar Srivastava et al.

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY (2008)

Review Chemistry, Physical

Electrochromics for smart windows: thin films of tungsten oxide and nickel oxide, and devices based on these

Gunnar A. Niklasson et al.

JOURNAL OF MATERIALS CHEMISTRY (2007)

Article Materials Science, Multidisciplinary

Linear response approach to the calculation of the effective interaction parameters in the LDA+U method

M Cococcioni et al.

PHYSICAL REVIEW B (2005)

Article Chemistry, Analytical

The influences of preparation parameters on NiO thin film properties for gas-sensing application

I Hotovy et al.

SENSORS AND ACTUATORS B-CHEMICAL (2001)

Article Chemistry, Physical

Atomic resolved imaging of cleaved NiO(100) surfaces by NC-AFM

H Hosoi et al.

APPLIED SURFACE SCIENCE (2000)