Article
Chemistry, Physical
Akhmed K. Akhmedov, Aslan Kh. Abduev, Eldar K. Murliev, Victor V. Belyaev, Abil Sh. Asvarov
Summary: It is possible to fabricate indium zinc oxide (IZO) films with a wide range of optoelectronic properties by using different oxygen contents in the working gas during sputtering deposition. Additionally, high deposition temperature is not necessary to achieve excellent transparent electrode quality in the IZO films. By modulating the oxygen content in the working gas during RF sputtering, IZO-based multilayers were deposited, consisting of ultrathin IZO unit layers with high electron mobility alternating with layers characterized by high concentration of free electrons. Through optimizing the thicknesses of each unit layer, low-temperature 400 nm thick IZO multilayers with excellent transparent electrode quality were obtained, exhibiting low sheet resistance, high transmittance in the visible range, and a very flat multilayer surface.
Article
Engineering, Electrical & Electronic
Bidyut Barman, Sanjay Kumar Swami, Viresh Dutta
Summary: Sputter deposition of multilayer ZAZ and AAA TCO coatings was achieved using a magnetron sputtering system, showing improved electrical properties compared to commercial ITO film. High-temperature annealing demonstrated stable optical and electrical properties of the fabricated TCO layers up to 200℃.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Nanoscience & Nanotechnology
Long Wen, Bibhuti-B Sahu, Jeon-Geon Han, Geun-Young Yeom
Summary: The ultra-thin tin doped crystalline indium oxide (ITO) films were successfully deposited at temperatures lower than 100 degrees C using a 3-dimensionally confined magnetron sputtering source (L-3DMS). The high quality of these films is attributed to improved crystallinity and oxygen vacancies, achieved through high density plasma and low discharge voltage of the L-3DMS, allowing for formation of a crystalline structure at low processing temperatures.
SCIENCE OF ADVANCED MATERIALS
(2021)
Article
Chemistry, Physical
Shuai Guo, Wahyu Diyatmika, Yeliz Unutulmazsoy, Lei Yang, Bing Dai, Liangge Xu, Jiecai Han, Victor Ralchenko, Andre Anders, Jiaqi Zhu
Summary: Indium oxide (In2O3) thin films without intentional doping can be deposited with high crystallinity, high electrical conductivity, and high transmittance under specific growth conditions. The highest film crystallinity is observed at 400℃. The films grown at this temperature exhibit competitive electrical properties and have an average transmittance greater than 80% in the visible to near-infrared spectral region.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Abdelbaki Hacini, Ahmad Hadi Ali, Nurul Nadia Adnan, Nafarizal Nayan, Leila Harkat
Summary: A novel laser annealing treatment was used to enhance the properties of ITO/Cr-Ag/ITO thin film, resulting in improved crystalline quality, surface quality, and optical characteristics. The laser annealing significantly decreased the resistivity and improved the electrical contact.
SURFACES AND INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Ayse Seyhan, Emre Kartal
Summary: In this study, the potential of multilayer TCO structures for crystalline silicon heterojunction solar cells was investigated. The results showed that the multilayer TCO structure exhibited improved electrical and optical properties compared to single-layer thin films, leading to enhanced performance in optoelectronic devices.
Article
Chemistry, Physical
Jnanraj Borah, Bimal K. Sarma
Summary: In this study, high-quality Al-doped ZnO (AZO) transparent conductors were produced by pulsed direct current (DC) magnetron sputtering under varied process conditions. The films showed stable and excellent electro-optical properties, with sheet resistance below 5 X/sq. and maximum visible light transmittance close to 90% under optimized conditions. The combination of low electrical resistivity and high optical transparency highlights the potential of AZO films as a replacement for ITO.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
N. Ziani, E. Aubry, N. Martin, L. Hirsinger, A. Billard, P. Briois, M. S. Belkaid, M. Arab Pour Yazdi
Summary: Delafossite CuFeO2 films were synthesized by reactive magnetron sputtering at different substrate temperatures ranging from 380 to 550 degrees C. The films exhibited a rhombohedral structure and showed partial dissociation of the delafossite phase into FCC Cu and Fe3O4 magnetite phases at the highest temperature, as well as changes in preferential orientation and optical properties with temperature.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Electrical & Electronic
Kai-Ping Chang, Yu-Wun Chien, Po-Hsiang Wang, Chao-Chun Yen, Ying-Xiang Lin, Ying-Jie Gao, Wan-Yu Wu, Dong-Sing Wuu
Summary: In this study, a blue transparent micro-LED display with a chip size of 20 μm × 20 μm, a pixel density of 152 PPI, a pixel spacing of 150 μm, and a resolution of 64 × 32 has been successfully fabricated. ITO/Ag/ITO transparent layers were deposited by high-power impulse magnetron sputtering. The electrical properties of the indium tin oxide (ITO) layers were analyzed using sheet resistance, while surface morphology was examined using scanning electron microscopy, transmission electron microscopy, and atomic force microscopy. The results show that the ITO/Ag/ITO structure with 20 nm thick Ag has a lower sheet resistance (3.36 Cl/sq) and sufficient visible light transmittance (80.45%). The visible light transmittance of the ITO/Ag/ITO layers increased to 86% after rapid thermal annealing. Furthermore, surface roughness was minimized and sheet resistance was further reduced, resulting in ohmic contact on n-GaN for transparent micro-LED display applications.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Physical
Jun-Dar Hwang, Yan-Jhong Chiou
Summary: A NiO/Ag/NiO (NAN) transparent conducting electrode (TCE) was fabricated using a low-cost magnetron-sputtering system. The study investigated the effects of different thicknesses of the Ag intermediate layer and various annealing temperatures on the optical and electrical properties of the prepared TCEs. Thinner Ag layers appeared as isolated island structures resulting in higher optical absorption, while thicker Ag layers formed continuous films leading to lower resistivity and sheet resistance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
Samir Hamrit, Kamal Djessas, Kahina Medjnoun, Idris Bouchama, Mohammad Alam Saeed
Summary: RF-magnetron sputtering was used to deposit VZO nanostructured thin films on flexible PEN substrates at room temperature. The thin films with 2% vanadium content showed the lowest resistivity and a Hall mobility of 10.62 cm(2) V-1 s(-1). These nanostructured thin films exhibit over 70% transmission in the visible region and have potential applications in electronic and optoelectronic devices.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Si Bui Quang Tran, Fong Yew Leong, Ramanarayan Hariharaputran, Wenjun Ding, Po -Yen Lai, Duc Vinh Le
Summary: In this study, a numerical framework for multi-scale modeling planar Direct Current (DC) magnetron sputtering for a single alloy target is proposed. The model incorporates electromagnetics, fluid dynamics, discharge chemistry, and thermal transport across multiple length scales. The framework accurately predicts the composition, uniformity, and deposition flux of deposited thin film alloys, as well as provides information regarding plasma characteristics in the chamber. Parametric analyses reveal the scaling relationship between substrate film composition and chamber pressure, as well as the significant influence of magnetic fields on substrate deposition flux and film uniformity.
Article
Materials Science, Multidisciplinary
Kunzhe Wang, Peiwen Jiao, Yuanyuan Cheng, Huarui Xu, Guisheng Zhu, Yunyun Zhao, Kunpeng Jiang, Xiuyun Zhang, Yuangui Su
Summary: The preparation process of ITO film has been fully matured, and precise control of preferred orientation has been achieved for (211), (222), (400), and (440) orientations. Among them, the (400) preferred film exhibited excellent electric properties and visible light transmittance, making it an important choice for transparent electrode applications.
Article
Materials Science, Multidisciplinary
Tao Wang, Qiannan Zhang, Shouming Yu, Guojun Zhang
Summary: Thin metal films have been proved effective in developing latent fingermarks, especially films with thickness of 10-20 nm showing the most clear features. Among different metal types, copper films demonstrate better performance in displaying Level 2 features compared to chromium and aluminum films with the same thickness. The morphology difference of films deposited on ridge and valley areas affects the optical contrast of fingermark ridges and valleys, which is related to re-emission effect influenced by film thickness and metal type.
Article
Chemistry, Physical
Wissal Belayachi, Gerald Ferblantier, Thomas Fix, Guy Schmerber, Jean-Luc Rehspringer, Thomas Heiser, Abdelilah Slaoui, Mohammed Abd-Lefdil, Aziz Dinia
Summary: Transparent conducting oxides (TCOs) are essential for solar cells, and tin dioxide (SnO2) films, with their rich sources, low cost, and non-toxicity, are potential substitutes for the commonly used indium-doped tin oxide (ITO). SnO2 films deposited using radio frequency (RF)-magnetron sputtering exhibit high visible-light transmittance and excellent electrical properties, making them suitable for organic solar cells (OSCs) electrodes. Despite slightly lower power conversion efficiency compared to ITO, SnO2 TCO shows promise as a viable alternative.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Physics, Applied
Bibhuti Bhusan Sahu, Su Bong Jin, Piao Jin Xiang, Jay Bum Kim, Jeon Geon Han
JOURNAL OF APPLIED PHYSICS
(2018)
Article
Materials Science, Multidisciplinary
B. B. Sahu, Seok H. Kim, J. S. Lee, Jeon G. Han
Article
Chemistry, Physical
Long Wen, Bibhuti B. Sahu, Hye R. Kim, Jeon G. Han
APPLIED SURFACE SCIENCE
(2019)
Article
Materials Science, Coatings & Films
Jun S. Lee, Bibhuti B. Sahu, Jeon G. Han
SURFACE & COATINGS TECHNOLOGY
(2019)
Article
Physics, Applied
Bibhuti B. Sahu, Sung Kim, Min W. Lee, Jeon G. Han
JOURNAL OF APPLIED PHYSICS
(2020)
Article
Nanoscience & Nanotechnology
Satyananda Kar, Bibhuti Bhusan Sahu, Hiroyuki Kousaka, Jeon Geon Han, Masaru Hori
Article
Chemistry, Multidisciplinary
Na Liu, Jeonghun Kim, Jeonghyeon Oh, Quang Trung Nguyen, Bibhuti Bhusan Sahu, Jeong Geon Han, Sunkook Kim
Article
Materials Science, Coatings & Films
Bibhuti B. Sahu, Seok H. Kim, Sehwan Kim, Jeon G. Han, Sunkook Kim
SURFACE & COATINGS TECHNOLOGY
(2020)
Article
Materials Science, Multidisciplinary
Long Wen, Bibhuti B. Sahu, Geun Y. Yeom, Jeon G. Han
Summary: Thin ITO films with thickness <= 35 nm were produced using 3-D confined magnetron sputtering (3DCMS) with low resistivity and high visible transmittance. The fabrication process included careful study of material properties, crystalline microstructures, and chemical properties. The fabricated films demonstrated good bending capabilities for potential flexible applications.
Article
Optics
N. P. Yadav, Bibhuti B. Sahu, Tarun Yadav, Rajneesh Kumar, Amit Pathak, G. N. Pandey, Srikanta Moharana
Summary: A facile solution casting technique was used to fabricate ceramic SrTiO3; STO particles and polystyrene-2% divinyl benzene (PDB) filled three-phase composite films with poly(vinylidene fluoride) (PVDF) matrix. The introduction of PDB particles into the PVDF-STO composites enhanced dielectric properties and reduced dielectric loss, improving the dielectric constant noticeably.
Article
Optics
N. P. Yadav, Bibhuti B. Sahu, R. N. Mahaling, Tarun Yadav, Pankaj K. Tripathi, Srikanta Moharana
Summary: A PMMA-BFO-PDB composite material was developed using PMMA as the polymer matrix, BFO and PDB as fillers, showing high dielectric constant and low dielectric loss. The composite exhibited a maximum dielectric constant of approximately 108 and a dielectric loss factor of approximately 1 at 20 wt% of PDB contents and 102 Hz. The PMMA-BFO-PDB composite achieved a dielectric constant of 108 at 102 Hz, which is 21 times higher than that of pure PMMA matrix.
Article
Chemistry, Physical
Bibhuti Bhusan Sahu, Kazuya Nakane, Kenji Ishikawa, Makoto Sekine, Takayoshi Tsutsumi, Taku Gohira, Yoshinobu Ohya, Noriyasu Ohno, Masaru Hori
Summary: This study uses optical emission spectroscopy (OES) to measure the electron temperature and density in dual-frequency pulsed capacitively coupled plasmas (CCPs). The results show that the plasma conditions are dominated by a corona balance and reveal insights into the pulsed discharge.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Nanoscience & Nanotechnology
Long Wen, Bibhuti-B Sahu, Jeon-Geon Han, Geun-Young Yeom
Summary: The ultra-thin tin doped crystalline indium oxide (ITO) films were successfully deposited at temperatures lower than 100 degrees C using a 3-dimensionally confined magnetron sputtering source (L-3DMS). The high quality of these films is attributed to improved crystallinity and oxygen vacancies, achieved through high density plasma and low discharge voltage of the L-3DMS, allowing for formation of a crystalline structure at low processing temperatures.
SCIENCE OF ADVANCED MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Bibhuti B. Sahu, Min W. Lee, Wen Long, Jeon G. Han
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.
