Article
Materials Science, Multidisciplinary
Romang Bosigo, Lucia M. Lepodise, George Chimowa, Cosmas Muiva
Summary: CuO-based thin films doped with varying Ce concentrations were prepared using chemical spray pyrolysis. The doping of Ce led to modulation of the bandgap and successful substitution of ions in the CuO matrix. The morphology of the films changed with increasing Ce doping. The 4% Ce thin film showed the highest gas sensing capabilities for ethanol and exhibited a chemosorption mechanism.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Adithya Prakash, M. G. Mahesha
Summary: This article investigates the influence of isovalent dopant Zinc on the electronic, optical, and structural characteristics of copper oxide thin films. The results show that Zinc doping effectively modifies the electrical and structural properties of the films without sacrificing their excellent optical properties.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Radouane Daira, Bouzid Boudjema, Mohamed Bououdina, Mohamed Salah Aida, Catalin-Daniel Constantinescu
Summary: This study presents and discusses the synthesis of cupric oxide (CuO) films on cost-efficient, optical grade borosilicate-crown glass substrates via chemical spray pyrolysis. The optical, morphological, and crystalline properties of the CuO films are influenced by the substrate temperature and chemical doping. Raman spectroscopy and X-ray diffraction analysis confirm the presence of CuO and its polycrystalline nature.
APPLIED SCIENCES-BASEL
(2023)
Article
Engineering, Electrical & Electronic
Silan Baturay, Ilhan Candan, Cihat Ozaydin
Summary: The polycrystalline copper oxide (CuO) thin films were produced using spin coating method on glass and silicon substrates, and the effect of Cr doping on the film's structure, optical properties, and electrical performance was studied.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
N. H. Touidjen, M. Lamrizeggar, M. S. Aida, S. Rouabah, N. Aouabdia
Summary: This study compares the deposition of CuO and SnO2 thin films by spray pyrolysis and their sensitivity to volatile organic compounds. The films exhibit small grain size and porous surfaces, which enhance gas sensing efficiency. The SnO2-based sensor shows good sensitivity, selectivity, and repeatability towards ethanol gas at room temperature, while the CuO sensor exhibits high sensitivity and selectivity towards methanol vapor at 50 degrees C.
JOURNAL OF ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Physical
Muhammed Emin Gulduren, Demet Iskenderoglu, Harun Guney, Emre Gur, Merve Acar, Sibel Morkoc Karadeniz
Summary: Pure and nickel doped copper oxide thin films were grown successfully using ultrasonic spray pyrolysis method. The effects of nickel doping on the properties of the films were investigated through various analyses, such as XRD, SEM, UV-visible spectroscopy, photoluminescence spectroscopy, gas sensing measurements, and X-ray photoelectron spectroscopy. It was found that the doping concentration influenced the structural, morphological, optical, and gas sensing properties of the films. The results showed that the nickel doping modified the crystal structure, grain size, absorbance features, bandgap, luminescent emissions, and gas sensing responsivity of the copper oxide films.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Muhammed Emin Gulduren, Demet Iskenderoglu, Harun Guney, Sibel Morkoc Karadeniz, Merve Acar, Emre Gur
Summary: The effects of different Cr doping concentrations on the morphology, structure, optical and gas sensing properties of CuO thin films were investigated. The results showed that Cr doping altered the crystal structure, morphology, and optical properties of CuO, and significantly enhanced the sensitivity of the gas sensor.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Engineering, Electrical & Electronic
D. H. Cuate-Gomez, A. Garzon-Roman, J. L. Sosa-Sanchez, C. Zuniga-Islas, Miguel A. Dominguez
Summary: Conventional inorganic semiconductors have limitations for certain applications, leading to the development of a new generation of thin film organic semiconductor materials. The use of ultrasonic spray pyrolysis method allows for the production of ErPc thin films for incorporation into heterostructures and subsequent characterization. The results demonstrate a photo-response with reverse polarization in the studied heterostructures.
JOURNAL OF ELECTRONIC MATERIALS
(2021)
Article
Chemistry, Physical
M. C. Nagashree, S. D. Kulkarni, B. V. Rajendra, J. Seidel, M. S. Murari, P. Sharma
Summary: In this study, high-quality ferroic films of bismuth ferrite were synthesized on glass substrates using solution-based spray pyrolysis. The effects of annealing conditions on film quality and switchable polarization were investigated. The optimized films exhibited polycrystalline nanostructured grains with high X-ray diffraction intensity and a mixed valence state of Fe2+/3+. These films displayed a complex ferroelectric domain microstructure and demonstrated robust nanoscale polarization switching. The findings highlight the potential of spray pyrolysis for low-cost fabrication of high-quality ferroelectric thin films and its application in advanced electronic devices.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
R. Souissi, N. Bouguila, M. Bendahan, K. Aguir, T. Fiorido, M. Abderrabba, I Halidou, A. Labidi
Summary: The importance of detecting ozone and its impact on human health; Gas sensors based on In2S3 films prepared have high sensitivity and low detection limits; The gas sensor at a working temperature of 160 degrees Celsius exhibits good rapidity and selectivity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Abdellah Rahmani, Louardi Remache, Mohammed Guendouz, M. S. Aida, Zoulikha Hebboul
Summary: The study explored the deposition of ZnO thin films using spray pyrolysis technique on various substrates, with a focus on mesoporous silicon. The ZnO films deposited on mesoporous silicon exhibited a larger surface area and higher photocurrent compared to other structures.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Harun Guney, Demet Iskenderoglu, Muhammed Emin Gulduren, Kubra Cinar Demir, Sibel Morkoc Karadeniz
Summary: In this study, CuO thin films were grown on glass substrates using ultrasonic spray pyrolysis method at different substrate temperatures. The effects of substrate temperature on the structural, morphological, and optical properties of the films were investigated using various characterization techniques. The results revealed that the substrate temperature influenced the grain size, optical absorbance, and energy bandgap of the CuO films. Additionally, the suitability of the films as electrodes in supercapacitor applications was explored.
Article
Materials Science, Multidisciplinary
Aabel Premnath, Sai Guru Srinivasan Sathyiyanarayanan, Amiruddin Rafiuddin, Santhosh Kumar Maniyeri Chandroth
Summary: This study presents the use of copper-zinc sulfide (CZS) as a switching layer in electronic devices for resistive memory applications. The investigation demonstrates that CZS material exhibits excellent switching characteristics and bipolar performance.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
H. Fayaz Rouhi, S. M. Rozati
Summary: In this article, Tellurium doped zinc oxide thin films were prepared using a simple spray pyrolysis technique. The effects of Te doping concentration on the crystal structure, surface morphology, and optical properties of the films were investigated.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Chemistry, Physical
A. Abdel-Galil, N. L. Moussa
Summary: The researchers deposited nanostructured thin films of copper oxide (CuO) on glass substrates through spray pyrolysis at a controlled temperature of 400 degrees Celsius. The films exhibited a pure polycrystalline CuO structure with potential for supercapacitor applications. The optical measurements showed that the CuO thin films had a direct optical band gap, which increased with gamma irradiation. Furthermore, cyclic voltammetry in a 1M KOH electrolyte demonstrated high specific capacitance and impedance studies confirmed the potential of CuO as a material for supercapacitors.
RADIATION PHYSICS AND CHEMISTRY
(2023)
Article
Chemistry, Physical
Ali J. Addie, Raid A. Ismail, Mudhafar A. Mohammed
Summary: This study investigates the application of amorphous carbon nitride (CNx) as an alternative anti-reflection coating (ARC) for crystalline silicon solar cells. The results show that the CNx coating significantly reduces reflectance and improves power conversion efficiency. Additionally, the increase in short circuit current density contributes more to the efficiency improvement compared to the fill factor.
Article
Chemistry, Multidisciplinary
Khawla S. Khashan, Aseel A. Hadi
Summary: In this work, a suspension of ZnO nanoparticles was prepared using wet chemical methods under different temperatures and concentrations. The results showed that the suspension and nano films had high transmittance, around 90%, in the visible region but decreased sharply in the UV region. The particle size and band gap varied with concentration, temperature, and aging time. Hall Effect measurements of the ZnO films revealed a change in conductivity type with temperature. Additionally, the nanoparticle suspension and nano films could be utilized as adjustable cutoff frequency filters.
JOURNAL OF THE INDIAN CHEMICAL SOCIETY
(2022)
Article
Engineering, Electrical & Electronic
Ali J. Addie, Mudhafar A. Mohammed, Raid A. Ismail
Summary: In this research, zinc nitride thin films were fabricated using the DC reactive magnetron sputtering technique, and the effects of nitrogen gas concentration on their structural, optical, and electrical properties were investigated. The results showed that the films exhibited high optical transmittance and responsivity, making them promising for optoelectronic applications.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Multidisciplinary Sciences
Ali J. Addie, Raid A. Ismail, Mudhafar A. Mohammed
Summary: This study synthesized an amorphous carbon nitride CNx thin film as a novel anti-reflection coating for crystalline silicon (c-Si) solar cells. The CNx film showed high reflectance and excellent photoelectric conversion efficiency, thus offering great potential for improving the efficiency of c-Si solar cells.
SCIENTIFIC REPORTS
(2022)
Article
Materials Science, Multidisciplinary
Khawla S. Khashan, Aseel A. Hadi, Israa F. Hasan
Summary: TiO2 nanoparticles and TiO2@MWCNTs nanocomposites were prepared using pulsed Nd:YAG laser ablation in liquid. The structure of the nanocomposites was confirmed by FTIR, Raman spectroscopy, XRD, and TEM analysis. The energy bandgap value of TiO(2)NPs decreased with the addition of MWCNTs. This method is suitable for creating contamination-free nanostructures of various morphologyic and sizes.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Physics, Condensed Matter
Ban A. A. Bader, Iman H. H. Hadi, Muna Y. Y. Slewa, Khawla S. Khashan, Farah A. A. Abdulameer
Summary: TiO2 nanoparticles were produced by laser ablation of titanium in water, characterized using XRD, SEM, and UV-VIS, showing formation of anatase TiO2, spherical shape with sizes ranging from 5 nm to 50 nm, and a bandgap of 3.6 eV. The resulting TiO2 NPs/Si heterojunction displayed good rectifying behavior and a maximum responsivity of about 0.7 A/W at 310 nm.
ADVANCES IN CONDENSED MATTER PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Ghufran S. Jaber, Khawla S. Khashan, Maha Jamal Abbas, Nathier A. Ibrahim
Summary: Pulsed laser ablation in liquid media was used to prepare zinc oxide nano-particles (NPs) to enhance glass ionomer restorative. The synthesized ZnO NPs were confirmed using UV-Visible spectroscopy, XRD, and TEM. The absorption spectra showed increased absorbance intensity with more laser pulses and a peak at 230 nm due to quantum confinement. XRD analysis revealed a hexagonal crystalline structure, while TEM images showed nanorod and spherical nanoparticles. ZnO NPs with glass ionomer exhibited improved antibacterial activity against Streptococcus mutans bacteria, and the compressive strength test demonstrated significant enhancement with increased ZnO NP concentration.
JOURNAL OF THE INDIAN CHEMICAL SOCIETY
(2023)
Article
Engineering, Electrical & Electronic
Huda Mahmood Al-Attar, Haitham T. Hussein, Rafid S. Zamel, Ali J. Addie, Mustafa K. A. Mohammed
Summary: A green approach using pulsed laser ablation of liquid (PLAL) was used to synthesize a ternary nanocomposite of ZnO/CuO/Al2O3, which showed highly crystalline structure and enhanced photocatalytic activity. The optimized ratio of 3:1:1 at pH = 10.37 achieved the highest degradation efficiency of 98.55% after 15 minutes of illumination.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Fatema H. Rajab, Rana M. Taha, Aseel A. Hadi, Khawla S. Khashan, Rana O. Mahdi
Summary: For the first time, laser induced hydrothermal growth (LIHG) process was used to obtain high quality ZnO rods on a p-type Si (111) substrate without expensive and complex equipment. X-ray diffraction, field emission scanning electron microscope, and UV-VIS spectroscopy were employed to investigate the structural and optical properties of ZnO rods. The ZnO/Si hetero-structured nanorods device exhibited superior responsivity and specific detectivity at a wavelength of 350 nm.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Materials Science, Multidisciplinary
Susan H. H. Salman, Khawla S. S. Khashan, Aseel A. A. Hadi
Summary: The technique of pulsed laser ablation in liquid media was used to synthesize Palladium structures in nanoscale for antibacterial activity. The synthesized Pd NPs were characterized using FT-IR, XRD, TEM, and UV-Vis spectroscopy. The Pd NPs showed a face-centered cubic structure, with spherical shape and sizes ranging from a few nanometers to several tens of nanometers. The antibacterial activity of Pd NPs was higher against Gram-negative bacteria compared to Gram-positive bacteria.
Article
Physics, Multidisciplinary
Mayyadah H. Mohsin, Khawla S. Khashan, Ghassan M. Sulaiman
Summary: In this paper, hexagonal BN, Gd2O3 nanoparticles, and BN@Gd2O3 hybrid nanocomposites were synthesized by novel laser ablation in liquid. Various analytical techniques were used to investigate their structural and optical properties. The results showed the formation of h-BN NPs, sheet-like and spherical nanoparticles, hexagonal-type nanoflake of Gd2O3, and needle-like shapes. The optical energy gap of h-BN, Gd2O3, and h-BN@Gd2O3 was found to be in the range of (4.5-5.5) eV.
Article
Chemistry, Physical
Susan Hasan, Khawla S. S. Khashan, Aseel A. A. Hadi
Summary: In this study, Pd@Ag(core/shell) nanoparticles were synthesized using Q-switched Nd:YAG laser at a wavelength of 1064 nm in distilled water. The synthesized nanoparticles were characterized by various techniques, including UV-visible spectrophotometry, FT-IR, XRD, TEM, and EDS. The results showed that the Pd@Ag core-shell nanoparticles exhibited excellent antibacterial activity, especially against Gram-positive pathogens. The use of PLAL-prepared Pd@Ag core-shell nanoparticles as antimicrobial agents shows promising potential.
Article
Chemistry, Physical
Zainab A. A. Abbas, Khawla S. S. Khashan, Zainab T. T. Hussain
Summary: Pulsed laser ablation in liquid technique was used to prepare pure and doped CdO NPs with varied Ag concentrations. The prepared nanoparticles were characterized using FTIR, XRD, UV-vis spectroscopy, FESEM with EDS, and atomic force microscopy. The morphology of pure CdO NPs changed from agglomerated bundles to nanorods and interconnecting web architectures as Ag concentration increased. The gas-sensing response of the composite nanoparticles' sensor to NO2 was 46, which was 1.8 times larger than the response of the pure CdO NP sensor (24.9), indicating that oxidizing gas (NO2) was less sensitive to Ag-doped CdO nanocomposite sensors than reducing gas (H2S).
Article
Medicine, General & Internal
Mustafa Shubbar, Ali Addie, Lamis Al-Taee
Summary: This study examined the effects of the Regenerate system and CO2 laser on enamel treated against acid challenge. Raman microspectroscopy and Vickers microhardness test were used to evaluate the changes in enamel structure. The results showed that surfaces treated with Regenerate exhibited higher peak intensities of phosphate and carbonate, while CO2-lased surfaces had reduced carbonate content and higher microhardness values. Both treatments provided protection against acid challenge, benefitting dental healthcare.
Article
Engineering, Electrical & Electronic
Evan T. Salim, Azhar I. Hassan, Farhan A. Mohamed, Makram A. Fakhri, Ali J. Addie
Summary: This study investigated the properties of WO3 thin films deposited on glass and silicon substrates using the thermal spray technique. The films were prepared with a WO3 concentration of 10 mM and a deposition temperature of 350°C. The results showed that the crystal structure, grain size, stoichiometry, roughness, and optical and electrical properties of the WO3 films varied with the number of spray cycles applied.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
