Article
Materials Science, Multidisciplinary
Seval Aksoy Pehlivanoglu, Ozgur Polat
Summary: ZnO and Ir-doped ZnO thin films were fabricated by sol-gel spin coating technique. The structures and properties of the films were investigated. The addition of Ir increased the volume of the unit cell, atomic packing fraction, and grain size of the thin films. Optical bandgap decreased with Ir substitution. The transmittance and optical dielectric properties were also affected by Ir doping.
Article
Chemistry, Physical
Qing Guo, Qingtian Ma, Bowen Zhang, Yuxiang Dai, Yang Qi
Summary: In this study, the synthesis of ZnO films by chemical bath deposition with the assistance of zinc chloride as an additive was investigated. The films were characterized using various techniques, and the results showed that by changing the concentration of zinc chloride, ZnO films with different preferential growth orientations can be obtained, which exhibit good optical transmittance and different visible emissions. It was also found that the concentration of Cl- can affect the defects and preferred orientations of the ZnO films.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Spectroscopy
Swati Paul, Karthikeyan Balasubramanian
Summary: Zinc oxide nanorods were prepared using the sol-gel method, and composite films with a conducting polymer PEDOT:PSS were made by drop-casting. The study showed exciton dissociation and nonlinear optical properties, suggesting potential applications in optical switches and saturable absorbers.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Metallurgy & Metallurgical Engineering
Emine Guneri, Johnson Henry, Fatma Gode, Nilgun Kalaycioglu Ozpozan
Summary: Pure ZnO and Mn-doped ZnO thin films were prepared by chemical bath deposition method with various Mn doping concentrations. The structural, morphological, and optical properties of the films were analyzed using different techniques. XRD analysis revealed hexagonal structured ZnO in all films, with a peak shift observed in Mn-doped films. The crystallite size increased with Mn doping. The surface morphology of Mn-doped films exhibited irregularly shaped agglomerated particles. The transmittance spectra showed higher transmittance in the visible region, which decreased with Mn doping, indicating increased optical absorption. The band gap of Mn-doped films decreased with Mn doping. Mn-doped films exhibited higher optical and electrical conductivity in the UV region.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2023)
Article
Materials Science, Multidisciplinary
Abeer Salah, Ahmed M. Saad, Ahmed A. Aboud
Summary: The pure and Co-doped ZnO thin films were studied with different levels of Co doping. The grain size increased with Co doping, optical band gap showed changes, and the dispersion transitioned from anomalous to normal upon Co doping. The doped materials exhibited reverse saturable absorption and negative nonlinear refraction.
Article
Materials Science, Ceramics
Mina Rabizadeh, Mohammad Hossein Ehsani
Summary: The effect of annealing on ZnO/Cu/ZnO films was investigated, and the structural, optical, and thermal properties of the films were evaluated. The results showed that the ZnO/Cu/ZnO sample annealed at 400 degrees C had the lowest resistivity, highest transmittance, and lowest emissivity, making it suitable for energy-saving applications such as building windows.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Analytical
Qijing Lin, Fuzheng Zhang, Na Zhao, Ping Yang
Summary: Two sandwiched ZnO/Metal/ZnO transparent conductive thin films with different intermediate layers were fabricated using magnetron sputtering technology. Comparative analysis showed that the addition of a Ti layer improved the overall properties of the ZnO(Ti/Cu) film compared to the ZnO(Cu) film with the same metal layer thickness. The effect of annealing temperature was also studied, revealing that although the carrier concentration did not always increase with temperature, the sheet resistances decreased due to increased mobility. The transmittance of ZnO(Cu) films increased with annealing temperature, while that of ZnO(Ti/Cu) films initially increased and then decreased. The optical band gap of ZnO(Cu) films increased with temperature, but was lower than that of ZnO(Ti/Cu) films, which first increased and then decreased. The figure of merit for the ZnO(Ti/Cu) film was better, indicating that its overall performance was superior, and annealing improved the performance of the film systems.
Article
Chemistry, Physical
Natalia Nosidlak, Janusz Jaglarz, Piotr Dulian, Rafal Pietruszka, Bartlomiej S. Witkowski, Marek Godlewski, Wieslaw Powroznik, Tomasz Stapinski
Summary: This study investigates the influence of temperature on the optical constants of zinc oxide and aluminum-doped zinc oxide thin layers, showing reversible thermo-optic processes. Thermal ellipsometric measurements were used to determine the thermo-optical coefficient and thermal expansion coefficient, with complementary studies including XRD, EDS, and SEM. The addition of Al to the ZnO matrix was found to change the sign of the thermo-optical coefficient, with results explained using Prod-Homme theory.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Chenlin Wang, MinJu Ying, Jie Lian, MingYang Wei, Qingfen Jiang, Zhen Xu, Yu Zhang, Yueming Wang
Summary: In this work, ion implantation of Mn and As ions into ZnO films significantly altered their optical properties, leading to changes in refractive index and extinction coefficient. The presence of Mn ions also introduced a halfmetallic property to the ZnO films, resulting in gentler variations in optical characteristics. These findings suggest new possibilities for the design and optimization of optoelectronic devices utilizing ZnO thin films with semi-metallic properties.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Composites
Ali F. Al-Shawabkeh, Ziad M. Elimat, Khaleel N. Abushgair
Summary: The study investigates the optical properties of PVC/ZnO nanocomposite films. The results show that the optical properties of the films are dependent on the concentration of ZnO and the wavelength of light, and the optical parameters can be influenced by altering the concentration of non-annealed and annealed ZnO nanoparticles in the PVC matrix.
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
S. Vinoth, A. M. S. Arulanantham, S. Saravanakumar, R. S. Rimal Isaac, N. Soundaram, N. Chidhambaram, Devarajan Alagarasan, S. Varadharajaperumal, Mohd. Shkir, S. AlFaify
Summary: Cobalt-doped ZnO thin films synthesized using chemical bath deposition show excellent UV photosensing properties, with nanowire morphology and hexagonal wurtzite crystal structure. Due to the replacement of Co2+ ions, an increase in crystallite size and decrease in bandgap was observed, leading to high photoabsorption capability, with the highest responsivity reaching 0.918 AW(-1).
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
M. Nagaraja, P. Raghu, H. M. Mahesh, Jayadev Pattar
Summary: The study fabricated and analyzed thin films of ITO/CdS and ITO/ZnO/CdS bi-layer, demonstrating that ITO/ZnO/CdS films exhibit better structural and optical properties compared to ITO/CdS films.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Inorganic & Nuclear
Iman Roknidoust Foumani, Suat Pat
Summary: In this study, ZnO doped with Gd was deposited onto glass and silicon substrates using the TVA method to investigate its morphological, compositional, and optical properties. The results showed that the substrate strongly influenced the morphological structures of the thin films, with the glass substrate having more symmetry and regularity. The optical properties of the nano composite on the glass substrate were analyzed using an optical interferometer and UV-Vis spectrophotometer.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Junjun Jia, Tomohiko Hara, Shin-ichi Nakamura, Yuzo Shigesato
Summary: The ZnO-InN compound films were fabricated through both RF and DC sputtering, using indium and zinc metal target and N2O and N2 gases as the sputtering gas. The optical band gap was continuously tuned by precisely adjusting the chemical composition of the compound film. The carrier density of the ZnO-InN compound can be adjusted by varying the chemical composition, and when exceeding a certain threshold, the film exhibits degenerated semiconductor characteristics. Grain boundary scattering dominates carrier transport in films with carrier density below the threshold.
Article
Materials Science, Multidisciplinary
M. Karyaoui, D. Ben Jemia, M. Daoudi, A. Bardaoui, A. Boukhachem, M. Amlouk, R. Chtourou
Summary: This paper investigates the physical properties of graphene oxide-doped zinc oxide thin films, finding that 2% GO doping demonstrates the best optoelectrical properties and has potential for future optoelectronic applications.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)