Article
Engineering, Electrical & Electronic
Ahmed Saeed Hassanien, I. M. El Radaf
Summary: In this study, novel un-doped and fluorine-doped Sb2O3 thin films were synthesized using the spray pyrolysis procedure. The investigation showed that increasing the F-doping concentration enhanced the optical and electrical conductivities of the FAO films, reduced the optical band-gap energy values, improved the nonlinear optical parameters, decreased the sheet resistance, and improved the figure of merit of the films. These innovative transparent conducting F-doped Sb2O3 films have potential applications in optoelectronic and photovoltaic fields.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2023)
Article
Materials Science, Ceramics
T. S. Soliman, M. M. Hessien, Sh Elkalashy
Summary: The impact of La2ZnOx nanoparticles on the polymer structure and optical properties was investigated, and improvements in refractive index and optical conductivity were observed.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Chemistry, Physical
Anupama Chanda, Shalik Ram Joshi, V. R. Akshay, Shikha Varma, Jai Singh, M. Vasundhara, Prashant Shukla
Summary: The investigation focused on the effects of multilayers and cobalt (Co) doping on the structural and optical properties of TiO2 thin films. The findings showed that Co-doped TiO2 multilayered films exhibited enhanced values of refractive index, transmittance, and blue emission, making them promising for optical device applications.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Ceramics
M. K. Alqadi, A. B. Migdadi, F. Y. Alzoubi, H. M. Al-Khateeb, Ahmad A. Almasri
Summary: This research successfully manufactured ZnO thin films with different co-doping levels of Ag-Cu using the sol-gel method by immersing technique. The impact of (Ag-Cu) co-doping on ZnO films' structural, morphology, optical, and electrical properties was investigated. Adding Ag-Cu as a co-doping in ZnO films enhanced the electrical conductivity, where the band gap energy and sheet resistance are decreased.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Dong In Kim, Soonmin Yim, Seulgi Ji, Minsu Kim, Seunghun Lee, Minkyun Son, Da Som Song, Wooseok Song, Taek-Mo Chung, Sun Sook Lee, Ki-Seok An
Summary: In this paper, mesoporous metal fluoride films with precisely tunable refractive indices are prepared using a precursor-derived one-step assembly approach. The films exhibit a wide range of refractive indices (from 1.37 to 1.16 at 633 nm) due to the mesoporous structures formed through the interaction of Mg(CF3OO)(2) and La(CF3OO)(3) ions. Additionally, the authors create a gradient refractive index coating using multiple MgF2(1-x)-LaF3(x) layers, achieving high transmittance and antireflection properties.
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
Physics, Applied
A. Kashuba, H. Ilchuk, R. Petrus, I. Semkiv, O. Bovgyra, M. Kovalenko, V. Dzikovskyi
Summary: The optical constants and thickness of Al-doped ZnO thin films were determined using high-frequency magnetron sputtering method. The films were crystallized in hexagonal structure and the optical properties and bandgap were determined. Various optical parameters were analyzed using different models, showing differences between ZnO:Al thin films and known ZnO thin films.
MODERN PHYSICS LETTERS B
(2021)
Article
Materials Science, Ceramics
M. Yousaf, A. Rasheed, M. Ahmad, A. Farid, I. A. Khan
Summary: This study investigates the effect of annealing temperature on ZnON films synthesized using a powder vapor transport technique. The results show that annealing affects the crystallinity, surface morphology, energy bandgap, and refractive index of the ZnON films.
CERAMICS INTERNATIONAL
(2022)
Article
Biochemistry & Molecular Biology
Pawel Popielarski, Lidia Mosinska, Lukasz Skowronski, Robert Szczesny, Viviana Figa, Mieczyslaw Naparty, Beata Derkowska-Zielinska
Summary: This study investigates the effect of annealing on the polycrystalline alpha and beta phases of copper and nickel phthalocyanines. It is found that annealing significantly influences the optical properties of the vapor-deposited layers, and changing the annealing temperature can adjust their optoelectronic parameters for different optoelectronic devices.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Physics, Condensed Matter
Abdelouadoud Mammeri, Yassine Bouachiba, Abderrahmane Bouabellou, Adel Taabouche, Badis Rahal, Hacene Serrar, Saad Amara, Sofiane Harouni, Halim Merabti, Chafai Boukentoucha, Redha Aouati
Summary: ZnO thin films with different thicknesses were deposited on ordinary glass using spray pyrolysis, and all films had wurtzite crystal structure. The texture coefficient of the (002) plane decreased while that of the (103) plane increased with thickness. The SEM images showed flaky shaped grains that became larger and more hexagonal in shape. The surface evolution was confirmed by AFM microscopy. The refractive indices increased with thickness, and the power confinement factor also varied with mode order.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Materials Science, Multidisciplinary
Deep Sharma, Nidhi Patel, Rucha Desai, Sanjay Panjabi, Vaibhav Patel
Summary: This paper presents the in-situ synthesis of PbS nanoparticle films in the PEOX-PVA polymer matrix. The study investigates the effect of the polymer matrix on the structural properties, chemical bonding, and interaction with PbS nanoparticles. The morphology of the nanocomposites is observed using SEM and TEM. The bandgap and refractive index of PbS nanocomposite films are determined along with the quantum confinement effect.
Article
Materials Science, Ceramics
John W. W. Drazin, Kurt Eyink, Randall S. S. Hay
Summary: A series of LiCa2Mg2As3xV3-3xO12 garnet powders were synthesized and a complete solid-solution series was found between the endmembers. The homogeneity of the synthesized garnets was confirmed by energy-dispersive spectroscopy. Thermal properties of the garnets were measured from room temperature to 800 degrees C.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Engineering, Electrical & Electronic
Mansour Mohamed, M. A. Abdel-Rahim, A. Z. Mahmoud
Summary: The influence of thermal annealing on the structural, morphology, linear, and non-linear optical properties of Ge10Se78Ag12 thin films was investigated. The annealing temperature affected the crystalline phases and resulted in a structural transition at 383 K. The band gap, optical and electrical conductivities varied with temperature.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Optics
M. S. AlKhalifah, I. M. El Radafa
Summary: In this study, indium-doped aluminum oxide thin films were prepared using the spray pyrolysis technique, and their phase composition, structural parameters, and optical properties were analyzed. The results showed that the indium-doped aluminum oxide films exhibited high optical transparency and were n-type semiconductors, making them suitable for use as window layers in thin-film solar cells.
Article
Materials Science, Multidisciplinary
Najm M. Al-Hosiny, Sami S. Alharthi, Ali Badawi
Summary: The optical properties of Gafchromic EBT films were investigated under various solar power intensities, showing a strong dependence of parameters such as absorbance, transmittance, and reflectance on solar power intensity. This suggests that EBT films can be considered suitable candidates for many sensing and dosimetry applications.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Physics, Fluids & Plasmas
Keren Shlomi, D. Yuvaraj, Ilya Baskin, Oren Suchoi, Roni Winik, Eyal Buks
Article
Nanoscience & Nanotechnology
D. Yuvaraj, R. Kaushik, K. Narasimha Rao
ACS APPLIED MATERIALS & INTERFACES
(2010)
Article
Chemistry, Physical
V. Tamilselvan, D. Yuvaraj, R. Rakesh Kumar, K. Narasimha Rao
APPLIED SURFACE SCIENCE
(2012)
Article
Crystallography
D. Yuvaraj, K. Narasimha Rao, K. K. Nanda
JOURNAL OF CRYSTAL GROWTH
(2009)
Article
Engineering, Electrical & Electronic
D. Yuvaraj, M. B. Kadam, Oleg Shtempluck, Eyal Buks
JOURNAL OF MICROELECTROMECHANICAL SYSTEMS
(2013)
Article
Engineering, Electrical & Electronic
Ilya Baskin, D. Yuvaraj, Gil Bachar, Keren Shlomi, Oleg Shtempluck, Eyal Buks
JOURNAL OF MICROELECTROMECHANICAL SYSTEMS
(2014)
Article
Chemistry, Multidisciplinary
D. Yuvaraj, M. Sathyanarayanan, K. Narasimha Rao
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
(2014)
Article
Physics, Applied
D. Yuvaraj, K. Narasimha Rao, K. K. Nanda
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2009)
Article
Materials Science, Multidisciplinary
R. Rakesh Kumar, D. Yuvaraj, K. Narasimha Rao
Article
Materials Science, Multidisciplinary
D. Yuvaraj, K. Narasimha Rao
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2009)
Article
Materials Science, Multidisciplinary
Kishore Sridharan, V. Tamilselvan, D. Yuvaraj, K. Narasimha Rao, Reji Philip
Article
Physics, Multidisciplinary
Yuvaraj Dhayalan, Ilya Baskin, Keren Shlomi, Eyal Buks
PHYSICAL REVIEW LETTERS
(2014)
Article
Physics, Condensed Matter
D. Yuvaraj, K. Narasimha Rao, Keshab Barai
SOLID STATE COMMUNICATIONS
(2009)
Article
Physics, Fluids & Plasmas
Hui Wang, Yuvaraj Dhayalan, Eyal Buks
Article
Physics, Applied
Lior Ella, D. Yuvaraj, Oren Suchoi, Oleg Shtempluk, Eyal Buks
JOURNAL OF APPLIED PHYSICS
(2015)
Article
Materials Science, Multidisciplinary
Ping Zhang, Xiujie Yue, Yeran Gao, Zhenyong Lin, Shunxiang Wang, Songting Zhang
Summary: This paper investigates the strengthening mechanism of highspeed cutting and solid particle-entrained waterjet peening (HSC-WJP) composite reinforcement on 7075-T6 aluminum alloy. The research results show that composite reinforcement can improve surface quality, reduce surface pits and roughness, and decrease the size of precipitation-free zone (PFZ) at grain boundaries.
Article
Materials Science, Multidisciplinary
Sangyoon Lee, Hwi Yoon, Sanghun Lee, Seung-min Chung, Hyungjun Kim
Summary: The wettability of metal oxides, particularly HfO2 thin films deposited via atomic layer deposition, and its correlation with surface free energy have been studied. It was found that surface oxygen species significantly affect the intrinsic hydrophilicity of HfO2 thin films, and the crystalline orientations also evolve with film thickness.
Article
Materials Science, Multidisciplinary
Changdong Yin, Yiwen Wu, Zhou Xu, Dongdong Ye, Jun Yao, Jianjun Chen, Qiang Liu, Xin Ge, Meiling Ding
Summary: This study proposed a new strategy to indirectly estimate the hydrogen diffusivity of metallic materials under tensile stress by combining the electrochemical hydrogen permeation test (EHPT), the hydrogen diffusion descriptive equation based on Fick's law, and hydrogen pre-charged tensile test. The results showed that the hydrogen permeation curve obtained was highly approximate to the theoretical trend. The hydrogen embrittlement (HE) susceptibility of the specimens increased with increasing stress.
Article
Materials Science, Multidisciplinary
Huan Luo, Wei-yi Wang, Xin Yu, Xian-jun Lei, Lang Liu, Guo-zheng Zha, Wen-long Jiang, Bin Yang, Bao-qiang Xu
Summary: Separating selenium and tellurium is a general challenge in material and non-ferrous metallurgical industries. This paper proposes a novel method that achieved efficient separation of selenium and tellurium using gas-liquid equilibrium phase diagram and valence regulation-vacuum gasification technique.
Article
Materials Science, Multidisciplinary
Fan Zhang, Rong Xin Wang, Aiqin Tian, Fangzhi Li, Jianping Liu, Hui Yang
Summary: Deposition of Pd/Pt/Au three-layer films on p-GaN under high and ultra-high vacuum conditions was studied to investigate the electrical contact properties. Linear I-V curves were observed in samples deposited under ultra-high vacuum conditions, while nonlinear I-V characteristics were obtained in samples deposited under high vacuum conditions. The study also found that the samples deposited under high vacuum conditions had higher amounts of oxygen and Pd oxide. The oxide layer had an additional influence on the electrical characteristics of the Pd/Pt/Au/p-GaN contact.
Article
Materials Science, Multidisciplinary
Hongli Liu, Chengzhe Liu, Ying Sui, Zhongxian Liu, Tiangang Zhang, Zhiqiang Zhang, Shuang Sun, Jianwei Jia
Summary: This study utilized polysiloxane and hafnium carbide to produce Si-N-C-O-Hf hybridized ceramic fibers, and obtained ceramic fibers with hemispherical particles on the surface through electrostatic spinning and pyrolysis. The ceramic fibers exhibited excellent thermal stability, oxidation resistance, and high temperature insulation.
Article
Materials Science, Multidisciplinary
M. Abaker, Nazar Elamin Ahmed, A. Saad, H. F. Khalil, E. M. M. Ibrahim, A. M. Adam
Summary: This paper systematically studied the internal structure and thermoelectric properties of In1-xGaxSb alloys prepared by melting synthesis at 1123 K. The results showed that doping with Ga in the In sites led to a significant increase in the Seebeck coefficient and power factor, while reducing the thermal conductivity. The maximum dimensionless figure of merit was observed at 403 K.
Article
Materials Science, Multidisciplinary
Fucheng Yu, Jinlong Ren, Jielin Zhang, Haiyang Chen, Xin Tian, Chenchen Feng, Cuixia Li, Jianbin Zhang, Xianxi Tang, Xiaogang Hou
Summary: An environmentally friendly ZnO@BiVO4 composite photocatalyst was prepared using in-situ self-assembly and solvothermal methods, demonstrating good photocatalytic performance. The mass ratio of BiVO4 and NCZ was found to influence the photocatalytic performance of the composite.
Article
Materials Science, Multidisciplinary
Yaoming Shao, Pingping Zheng, Tianhao Dong, Lianghuan Wei, Haifei Wu, Jianxiao Si
Summary: In this paper, Mg3Bi2 films were prepared on glass substrate using magnetron sputtering, and the phase composition and thermoelectric properties of the films were investigated with different atomic ratios. The films displayed a metastable cubic phase and high conductivity when the atomic ratio exceeded stoichiometry.
Article
Materials Science, Multidisciplinary
I. V. Uimanov, D. L. Shmelev, S. A. Barengolts
Summary: A two-dimensional axisymmetric model has been developed to study the prebreakdown processes in a cathode microprotrusion under an external electric field. The simulation results show that electrohydrodynamic instability leads to the formation of a nanometer-sized conical protrusion on the microprotrusion tip, significantly accelerating the heating process.
Article
Materials Science, Multidisciplinary
Weilun Zhang, Di Yang, Feng Gong, Yongjun Chen, Tian Chen, Zhiwen Xie, Sirui Yang
Summary: A novel Pt doping method was designed to improve the thermal stability of CrWN coating. The doping of Pt atoms effectively blocks the coherent growth of the grains and creates a significant mixing effect, resulting in a smooth surface with uniform element distribution.
Article
Materials Science, Multidisciplinary
Xiaoye Wang, Xiaoguang Yang, Wenna Du, Tao Yang
Summary: In this study, the effects of multiple growth parameters on self-catalyzed growth of InAs/GaSb axial heterostructured nanowires on Si substrate by MOCVD were investigated. It was found that the growth temperature and switching time have significant influences on the nanowire growth.
Article
Materials Science, Multidisciplinary
Weizhong Cui, Yan Zhao, Can Cui, Xing Liu, Beili Pang, Jianguang Feng, Hongzhou Dong, Liyan Yu, Lifeng Dong
Summary: This study introduces Co2+ cations into Cs2AgBiBr6 film to improve its quality, grain size, and conductivity, resulting in enhanced solar cell efficiency.
Article
Materials Science, Multidisciplinary
Jian Wang, Ke Yang, Xianming Cheng, Yalin Lu, Ganghui Wu, Yang Zhang, Yun Kan
Summary: The corrosion behavior and microstructural evolution of Sc microalloyed Al-3.2Cu-1.5Li alloys were investigated in detail. The microstructural results showed higher levels of dislocations density in the Sc microalloyed sample, which resulted in significantly refined grains and T1 precipitates. Microalloying with Sc changed the corrosion mode of the alloy and localized corrosion was found to occur preferentially at the subgrain within unrecrystallized grains with high grain stored energy.
Article
Materials Science, Multidisciplinary
Weifeng Liu, Na Liu, Kaiqiang Song, Meiqin Zeng, Zhongchen Lu
Summary: Monoclinic WO3 prepared through plasma milling exhibits higher photocatalytic activity due to its higher surface area, increased oxygen vacancies, and defects.