Article
Materials Science, Ceramics
Li Zhang, Chen Zhou, Renhuai Wei, Xiaotian Kong, Xuebin Zhu
Summary: In this study, LaRh1-xNixO3 (x = 0, 0.05, 0.1) thin films were deposited by chemical solution deposition. The results showed that Ni doping can enhance the conductivity of the films, making them suitable for a wide range of applications.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Junichi Nomoto, Takashi Koida, Iwao Yamaguchi, Hisao Makino, Yuuki Kitanaka, Tomohiko Nakajima, Tetsuo Tsuchiya
Summary: In this study, a novel Ce and H codoped In2O3 (ICO:H) film was fabricated on flexible polyethylene terephthalate (PET) using excimer laser irradiation. The ICO:H film exhibited ultrahigh electron mobility and low sheet resistance, surpassing the performance of commercially available ITO/PET films. Furthermore, it also maintained higher infrared transparency.
NPG ASIA MATERIALS
(2022)
Article
Materials Science, Ceramics
A. Kathalingam, S. Valanarasu, Tansir Ahamad, Saad M. Alshehri, Hyun-Seok Kim
Summary: CdS thin films with different photosensing properties were prepared using spray pyrolysis method at various spray pressures. The results showed that the properties of the CdS films were influenced by different spray pressures, with variations in crystallite sizes, bandgaps, and optical properties within a certain range of spray pressures. The photodetector fabricated using the CdS films exhibited good performance, with high photoresponsivity and external quantum efficiency achieved at a spray pressure of 1.5 GPa.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Narathon Khemasiri, Annop Klamchuen, Sukittaya Jessadaluk, Prapakorn Rattanawarinchai, Punlapa Borklom, Adirek Rangkasikorn, Sakon Rahong, Chaiyuth Saekung, Mati Horprathum, Chanunthorn Chananonnawathorn, Tuksadon Wutikhun, Jiti Nukeaw, Navaphun Kayunkid
Summary: Transparent electrode (TE) plays a crucial role in optoelectronics, and the surface properties of TE layer greatly affect its electrical performance. This study investigates the morphological properties of laser-ablated aluminum-doped zinc oxide (AZO) films and finds a significant impact of laser fluence on the electrical properties. The optimized AZO film with low resistivity and high optical transmittance achieved from controlling the laser fluence is utilized for electrochromic devices.
Article
Nanoscience & Nanotechnology
Martando Rath, Moussa Mezhoud, Oualyd El Khaloufi, Oleg Lebedev, Julien Cardin, Christophe Labbe, Fabrice Gourbilleau, Vincent Polewczyk, Giovanni Vinai, Piero Torelli, Arnaud Fouchet, Adrian David, Wilfrid Prellier, Ulrike Luders
Summary: This study investigates the chemical stability of SrVO3 (SVO), a potential replacement for conventional ITO in the new generation of TCO materials. By subjecting the SVO thin films to heat treatments in the range of 150-250 degrees Celsius, the researchers are able to accelerate the natural aging process and observe changes in the structural, electrical, and optical properties. The results indicate surface oxidation at low annealing temperatures and the destruction of the perovskite phase at temperatures above 200 degrees Celsius. The goal of this study is to understand the thermal degradation and long-term stability issues of vanadate-based TCOs and identify technologically viable solutions for their application.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Funmilayo Hannah Abejide, Akintunde Ayodeji Ajayi, Samson Ibukun Akinsola, Aderemi Babatunde Alabi
Summary: In this study, gallium oxide thin films were synthesized using the cost-effective spray pyrolysis method on silicon substrates. The chemical bonding and surface morphology were analyzed using Fourier transform infrared and scanning electron microscopy. Optical studies revealed high absorbance in the UV region and an optical band gap of 4.9 eV for the films.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Dapeng Zhu, Xiangyang Tan, Lianze Ji, Zhen Shi, Xuefeng Zhang
Summary: Transparent and hydrophobic cerium oxide films with stable mechanical properties are deposited onto glass substrates by magnetron sputtering technique, with water contact angle correlated with surface roughness and chemistry, and high optical transmittance achieved. The stable mechanical property can protect the film surface effectively.
Review
Chemistry, Physical
Zhamatuofu Bai, Sheng-Chi Chen, Song-Sheng Lin, Qian Shi, Ying-Bo Lu, Shu-Mei Song, Hui Sun
Summary: This study provides a comprehensive understanding of the optoelectronic properties of CuCrO2, discussing its crystal structure, XRD spectrum, and advantages in optoelectronic devices. The study concludes that CuCrO2 exhibits best optoelectronic performance among delafossite materials and discusses band structure calculations and p-type conductivity analysis. Additionally, it highlights recent progress on intrinsic CuCrO2 and Mg/Ni doping CuCrO2, as well as prospects for future research directions.
SURFACES AND INTERFACES
(2021)
Article
Chemistry, Physical
A. El-Habib, M. Addou, A. Aouni, J. Zimou, M. Diani, H. Ftouhi, Z. El Jouad
Summary: This study examined the structural, optical, and electrochemical properties of undoped and vanadium (V) doped cerium dioxide (CeO2) thin films prepared by an automated spray pyrolysis technique. The results showed that V doping leads to a decrease in band gap value and average transmittance, while improving the Li+ ion insertion and extraction capability. The findings expand the potential applications of this material, especially in electrochromic devices.
SURFACES AND INTERFACES
(2021)
Article
Engineering, Electrical & Electronic
N. Khademi, M. M. Bagheri-Mohagheghi, A. Shirpay
Summary: In this research, light and heavy Bi-doped SnO2 thin films were prepared on glass substrates using spray pyrolysis technique. The effect of heavy Bi-doping on the structural, morphological, electrical, photo-thermo-electrical, and optical properties of the thin films was investigated. The results showed that the doping concentration of Bi had an impact on the crystalline structure and conductivity of the films.
OPTICAL AND QUANTUM ELECTRONICS
(2022)
Article
Materials Science, Ceramics
Maojun Ran, Zhong Yu, Ke Sun, Chuanjian Wu, Hao Qing, Hai Liu, Zhongwen Lan, Xiaona Jiang
Summary: In this study, Ni0.17Zn0.52Fe2.31O4 ferrite thin films were deposited on glass substrates using the spin-spray technique with aqueous ethanol solutions. The addition of 3% ethanol led to the most evident columnar morphology and optimal magnetic properties in the coated samples.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Steffen Wilbrandt, Olaf Stenzel, Abrar Liaf, Peter Munzert, Stefan Schwinde, Sven Stempfhuber, Nadja Felde, Marcus Trost, Tina Seifert, Sven Schroeder
Summary: Aluminum thin films with thicknesses between approximately 10 and 60 nm were deposited using evaporation and sputtering techniques. The layer characterization focused on reflectance, optical constants, and surface quality. A thickness dependence of the optical constants was established in the investigated thickness range.
Article
Engineering, Electrical & Electronic
Shivam Shukla, Krishna Manwani, Tvarit A. Patel, Emila Panda
Summary: The study focuses on developing a new transparent electrode that can maximize energy harvesting and performance of optoelectronic devices. This electrode has high visible transparency (82%) and high near-infrared transparency (88%), which is significantly higher than conventionally used materials. The film also shows good electrical resistivity and high electron concentration. The electrode is synthesized using magnetron sputtering, a commercially viable deposition technique, enabling potential for commercialization.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Materials Science, Multidisciplinary
D. C. Maddumage, S. A. Panamaldeniya, K. M. M. D. K. Kimbulapitiya, D. N. P. R. Jayakantha, M. A. H. M. Munasinghe, B. M. K. Pemasiri, N. Gunawardhana, B. S. Dassanayake
Summary: The synthesis of reduced graphene oxide (RGO) via the modified Hummer's method is an excellent approach for the bulk production of RGO powder. A novel atomized spray pyrolysis deposition (ASPD) method has been used to deposit RGO thin films on borosilicate glass substrates, with the deposition temperature being adjusted to optimize the electrical conductivity of the films.
MATERIALS RESEARCH BULLETIN
(2022)
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
Energy & Fuels
T. K. K. S. Pathmasiri, G. I. P. Perera, R. Gallage
Summary: This paper discusses the potential of using palm-castor oil blends as lubricating oil in industrial applications. The laboratory experiments show that the palm-castor blends have similar properties to commercial lubricating oils.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2022)
Article
Materials Science, Multidisciplinary
Satheeshkumar Elumalai, Chia-Ying Su, Masahiro Yoshimura
FRONTIERS IN MATERIALS
(2019)
Article
Chemistry, Multidisciplinary
Satheeshkumar Elumalai, Masahiro Yoshimura, Makoto Ogawa
CHEMISTRY-AN ASIAN JOURNAL
(2020)
Article
Chemistry, Analytical
Satheeshkumar Elumalai, Veerappan Mani, Nithiya Jeromiyas, Vinoth Kumar Ponnusamy, Masahiro Yoshimura
Article
Engineering, Environmental
Jaganathan Senthilnathan, Ambika Selvaraj, Sherif A. Younis, Ki-Hyun Kim, Masahiro Yoshimura
JOURNAL OF HAZARDOUS MATERIALS
(2020)
Article
Engineering, Environmental
Jaganathan Senthilnathan, Sherif A. Younis, Eilhann E. Kwon, Anupama Surenjan, Ki-Hyun Kim, Masahiro Yoshimura
JOURNAL OF HAZARDOUS MATERIALS
(2020)
Review
Chemistry, Multidisciplinary
Nicolas Biscay, Lucile Henry, Tadafumi Adschiri, Masahiro Yoshimura, Cyril Aymonier
Summary: Silicon carbide materials are excellent candidates for high-performance applications due to their outstanding thermomechanical properties and corrosion resistance. The oxidation behavior of SiC depends on temperature and time, and wet oxidation can accelerate the process. Hydrothermal media have an impact on SiC materials, which has been explained by different models.
Article
Chemistry, Physical
Satoru Kaneko, Takashi Tokumasu, Manabu Yasui, Masahito Kurouchi, Shigeo Yasuhara, Tamio Endo, Masaki Azuma, Akufumi Matsuda, Mamoru Yoshimoto, Sumanta Kumar Sahoo, Kripasindhu Sardar, Jyh-Ming Ting, Masahiro Yoshimura
Summary: This article investigates the challenges of direct growth of oxide films on silicon and the thermodynamic stability of binary oxides. Using magnesium oxide as an example, the study predicts the crystal orientation of epitaxial growth on silicon surface and confirms it with experimental results. The evaluation of adsorption energy can serve as a guideline for the epitaxial growth of oxide materials on silicon surface.
APPLIED SURFACE SCIENCE
(2022)
Review
Materials Science, Ceramics
Chi-Huang Huang, Masahiro Yoshimura
Summary: The purpose of this review paper is to describe the Growing Integration Layers (GIL) method for coating biocompatible oxide ceramics layers on metallic alloys. The GIL method allows for the growth of oxide layers on the substrate alloy from the bottom, resulting in chemically and structurally continuous layers with excellent adhesion. This method enables the processing of functional and structural ceramic layers in aqueous solutions, providing a soft and green process with low energy consumption. The GIL strategy has been successfully applied to coat bioactive hydroxyapatite ceramics on titanium-based metallic alloys, improving adhesion and introducing bioactivity.
CERAMICS INTERNATIONAL
(2023)
Article
Electrochemistry
Kripasindhu Sardar, Ravi Bolagam, Sumanta Kumar Sahoo, Satoru Kaneko, Masahito Kurouchi, Kao-Shuo Chang, Yen-Hsun Su, Jyh-Ming Ting, Masahiro Yoshimura
Summary: The synthesis of homogeneous Cu(Cr1-xFex)O-2 (x = 0, 0.5, and 1) samples using a new polymer complex gel technique has been successfully achieved. This solution processing technique allows for the formation of solid solutions with excellent crystal structure and phase purity. The synthesized samples demonstrated outstanding electrochemical performance and stability, indicating their potential for electrochemical supercapacitor applications.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Sumanta Kumar Sahoo, Ravi Bolagam, Kripasindhu Sardar, Satoru Kaneko, Shih-Chen Shi, Kao-Shuo Chang, Masahiro Yoshimura
Summary: A new soft solution process has been developed for patterning diamond-like carbon (DLC) onto silicon substrates in ambient conditions. In this technique, pure ethanol is locally activated and anodically patterned onto the substrate with the assistance of submerged plasma. The physical and chemical properties of the DLC patterns were analyzed, and the technique was found to be promising for carbon-based electrode fabrication processes.
Article
Multidisciplinary Sciences
Satoru Kaneko, Takashi Tokumasu, Manabu Yasui, Masahito Kurouchi, Satomi Tanaka, Chihiro Kato, Shigeo Yasuhara, Tamio Endo, Akifumi Matsuda, Mamoru Yoshimoto, Musa Can, Sumanta Kumar Sahoo, Kripasindhu Sardar, Jyh-Ming Ting, Masahiro Yoshimura
Summary: The growth morphology of carbon clusters on different substrates was investigated using theoretical and experimental approaches in this study. Molecular dynamics simulations were employed to evaluate the adsorptive stability of carbon clusters on various substrates, and the results were verified experimentally through layer by layer growth of graphene. The findings provide a valuable reference for selecting suitable substrates for target materials other than graphene.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Multidisciplinary
Masahiro Yoshimura, Kripasindhu Sardar
Summary: The stability of aliovalent ions in ionic crystals is closely related to lattice site potential and Madelung electrostatic potential. The formation of perovskite structure type compounds can be energetically favorable with higher Madelung electrostatic potential compared to parent binary compounds. Strong lattice site potential results in stability of high valence ions, with some experiencing maximum lattice site potential at specific lattice sites. Analysis of lattice site potential and Madelung electrostatic potential can rationalize the stability or instability of certain compounds with uncommon valence states.
Article
Materials Science, Multidisciplinary
Satheeshkumar Elumalai, Selvamani Vadivel, Masahiro Yoshimura
Summary: In this study, scalable 2D layered hexaniobate K4Nb6O17 was synthesized using a solid-state approach, and subsequently modified to improve interfacial charge storage as an anode for lithium-ion batteries. The modified anode demonstrated excellent lithium storage ability, achieving 480 mA h g(-1) at initial lithiation and maintaining a reversible capacity of 133 mA h g(-1) after 750 cycles at 0.5 A g(-1).
MATERIALS ADVANCES
(2021)
Article
Materials Science, Multidisciplinary
Satheeshkumar Elumalai, John R. Lombardi, Masahiro Yoshimura
MATERIALS ADVANCES
(2020)