Article
Materials Science, Ceramics
M. Milanova, L. Aleksandrov, A. Yordanova, R. Iordanova, N. S. Tagiara, A. Herrmann, G. Gao, L. Wondraczek, E. I. Kamitsos
Summary: The structure and luminescence properties of glasses with compositions 50ZnO:40B2O3:10WO3:xEu2O3, 0 <= x <= 10 mol% were studied using infrared, Raman and photoluminescence spectroscopic techniques. The physical properties of the glasses were also determined. The results indicate the efficiency of the 50ZnO:40B2O3:10WO3 glass structure for the luminescence performance of doped Eu3+ and suggest that these glasses are potential materials for red emission.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Materials Science, Ceramics
P. Arun Jeganatha Joseph, K. Maheshvaran, I. Arul Rayappan
Summary: The study investigated the physical, structural, and spectroscopic properties of Dy3+ ions doped alkali lead borophosphate glasses. It was found that the density and refractive index of the glasses increased with higher Dy3+ ion concentrations, leading to the creation of more non-bridging oxygen in the glass matrix. The glasses showed an amorphous nature with various absorption peaks and intense luminescence peaks centered at 478 nm and 574 nm, showcasing potential for white light applications.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Optics
Dalal Abdullah Aloraini, M. I. Sayyed, J. F. M. Jecong, Ashok Kumar, B. O. Elbashir, Aljawhara A. H. Almuqrin, Sabina Yasmin
Summary: The dual heavy metal oxide doped magnesium sodium borate glasses were fabricated and evaluated for their radiation shielding effectiveness. The results demonstrated that replacing a portion of B2O3 with Bi2O3 improved the radiation shielding efficacy of the samples.
Article
Chemistry, Inorganic & Nuclear
El Mahdi Bouabdalli, Mohamed El Jouad, Nathalie Gaumer, Mostapha Siniti, Samira Touhtouh, Abdelowahed Hajjaji
Summary: This study focuses on the effect of europium doping on the structural, physical, thermal, and optical properties of strontium phosphate glasses. The characterizations of pure and europium-doped glasses were performed using various techniques. The addition of europium led to depolymerization of the glasses and changes in their structural and physical properties. The prepared glasses showed good thermal stability and can potentially be used in laser, LED, and photonic devices.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Physics, Multidisciplinary
Ke-Lun Xia, Guang Jia, Hao-Tian Gan, Yi-Ming Gui, Xu-Sheng Zhang, Zi-Jun Liu, Xiang Shen
Summary: An ultrabroadband mid-infrared emission in the range of 1800 nm-3100 nm at room temperature from Cr2+:ZnSe-doped chalcogenide glasses was successfully reported. The effects of doping methods on emission-dependent properties were studied, and the optical properties of the samples were analyzed in terms of matrix glass composition and grain doping concentration. Characterization of the grains was done using X-ray diffraction, scanning electron microscope, and energy dispersive spectrometer analyses.
Article
Chemistry, Physical
P. Manyum, W. Rittisut, P. Mool-am-kha, C. Ekwongsa, N. Wantana, Y. Ruangtaweep, M. Popanao, S. Rujirawat, R. Yimnirun, P. Kidkhunthod, A. Prasatkhetragarn, S. Kothan, H. J. Kim, J. Kaewkhao
Summary: The melt quenching technique was used to produce Gd3+ and Er3+ dual doped borate glasses with varying concentrations of Gd2O3. The optical properties were determined through various characterization techniques, and it was found that the glass with a 7.5 mol% Gd2O3 concentration showed the most intense NIR luminescence. The presence of Er3+ ions resulted in a broad NIR band at 1537 nm, which exhibited increased intensity with increasing Er3+ concentration until reaching 1.0 mol%.
RADIATION PHYSICS AND CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
F. Zaman, N. Srisittipokakun, G. Rooh, S. A. Khattak, J. Kaewkhao, M. Rani, H. J. Kim
Summary: This work presents a comparative study of Dy3+ activated NMgBiBDy and NBaBiBDy glasses, focusing on their luminescence and lasing properties for white-light generation application. It is found that NMgBiBDy1.0 glass exhibits superior performance compared to NBaBiBDy1.0, making it promising for laser and white-light generation.
Article
Engineering, Electrical & Electronic
Bahaaudin M. Raffah, Yas Al-Hadeethi, Adel Bandar Alruqi, A. Hakamy, Y. S. Rammah, A. S. Abouhaswa
Summary: The study evaluates the influence of cerium oxide on the properties of barium-vanadate-borate glass samples, finding that increasing CeO2 concentration can decrease the optical band gap and improve the attenuation performance of the glass.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Multidisciplinary Sciences
Hirokazu Masai, Toru Nishibe, Satoshi Yamamoto, Takaaki Niizuma, Naoyuki Kitamura, Tomoko Akai, Takahiro Ohkubo, Miki Yoshida
Summary: Inorganic low-melting phosphate glass, prepared at 500 degrees C via melting and quenching, exhibits higher thermal and light resistance properties compared to polycarbonates. The research shows that colorless transparent oxide glasses without organic components can open up new possibilities for the application of inorganic glasses.
SCIENTIFIC REPORTS
(2021)
Article
Optics
K. Mariselvam, Juncheng Liu
Summary: In this study, a series of europium doped potassium titano telluroborate glasses were prepared and characterized. The properties of these glasses were analyzed, with density, refractive index, and field strength increasing with Eu3+ ion concentration. Optical band gap decreased and Urbach energy value increased, showing potential applications for red laser and color display devices. The glass with 2 wt.% EuKTTB had the highest values for stimulated emission cross-section and quantum efficiency.
JOURNAL OF LUMINESCENCE
(2021)
Article
Materials Science, Multidisciplinary
Noureddine Hacini, Mostefa Ghamnia, Mohamed Amine Dahamni, Abdelwaheb Boukhachem, Jean-Jacques Pireaux, Laurent Houssiau
Summary: ZnO thin films were synthesized using PECVD on silicon and glass substrates at different temperatures. The films exhibited variations in structural and optical properties, with temperature playing a significant role in the crystallization of ZnO.
Article
Materials Science, Multidisciplinary
Yutong Li, Gang Wang, Zehui Lin, Peijia Bai, Jiao Han, Mingwei Li, Duan Mao, Yiming Zeng
Summary: The influence of La doping on lead-free multiferroic Bi1-xLaxFeO3 ceramics has been investigated, showing that La doping causes structural distortion, changes in the generation of secondary phases, variations in grain size, and increase in carriers, thus affecting the dielectric, ferroelectric properties, and leakage current characteristics.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Chemistry, Inorganic & Nuclear
Mehmet Ozkan, Sercan Sadik Erdem, Reza Mohammadigharehbagh, Sema Kurtaran, Suat Pat
Summary: This paper investigates the substrate effect and crystal defects on cobalt-doped zinc oxide (ZnO) thin films, and analyzes their optical properties. Various characterization techniques, including X-ray diffraction, atomic force microscopy, scanning electron microscopy, and UV-vis spectrophotometry, were employed. The study confirms the polycrystalline nature of the films and identifies the formation of ZnO (10 0) plane on both substrates. Additionally, metal oxide and bimetal oxide structures were detected. The mean transmittance value was measured as 71%, and the band gap value of the Co-doped ZnO thin film was calculated as 3.22 eV. The results suggest that TVA is a promising method for producing Co-doped ZnO thin films.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Multidisciplinary Sciences
L. Ouachouo, H. Es-soufi, M. I. Sayyed, S. Ghyati, L. Bih
Summary: This study investigates the impacts of replacing lithium oxide with zirconium oxide on the properties of Zirconium-lithium-phosphate glasses. The results show that incorporating ZrO2 enhances the elastic constants and durability of the glasses, but causes significant structural changes and reduction in ionic conductivity.
Article
Polymer Science
Abeer Al Bawab, Ayat Bozeya, Yahia F. Makableh, Aya Khalaf, Rund Abu-Zurayk
Summary: Thermal and structural properties characterization were conducted for UHMWPE/CNT nanocomposite sheets prepared using a melt compounding method. Addition of CNTs increased the nanocomposites thermal stability and crystallinity. Use of oxidized and functionalized CNTs resulted in improved bridging in the polymer matrix. This nano-modification method enhances the durability of UHMWPE, making it suitable for lightweight, high strength material applications.
Article
Energy & Fuels
Hock Jin Quah, Zainuriah Hassan, Way Foong Lim
Summary: The study successfully fabricated high dielectric constant nitrided aluminum zirconium oxide films on silicon substrate. Different nitrogen gas flow rates affect factors such as film thickness and oxygen diffusion at the interface, impacting interface quality and film performance.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Energy & Fuels
Kar Yeow Tan, Puteri Haslinda Megat Abdul Hedei, Ainita Rozati Mohd Zabidi, Farah Hayati Ahmad, Kammutty Musliyarakath Abdul Shekkeer, Khai Shenn Lau, Way Foong Lim, Zainuriah Hassan, Hock Jin Quah
Summary: The comparison between metal-organic decomposed GaxCeyOz and CeO2 passivation layers subjected to post-deposition annealing at 800 degrees C in oxygen ambient revealed that GaxCeyOz layer showed mitigation in the formation of positively charged oxygen vacancies, a lower positive effective oxide charge (Q(eff)), a higher electric breakdown field, and a lower leakage current density compared to CeO2 layer. This was attributed to the lower interface trap density, slow trap density, and Q(eff) of GaxCeyOz layer.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Materials Science, Multidisciplinary
H. O. Tekin, M. S. Al-Buriahi, Shams A. M. Issa, Hesham M. H. Zakaly, Bashar Issa, Imen Kebaili, Ali Badawi, M. K. A. Karim, K. A. Matori, M. H. M. Zaid
Summary: The study revealed a direct relationship between the amount of Ag2O substitution and radiation attenuation properties in bioactive glasses. Increasing the content of Ag2O can enhance the gamma-ray attenuation properties of the studied bioactive glass system.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Energy & Fuels
Way Foong Lim, Hock Jin Quah
Summary: Ternary hafnium-doped tantalum oxide (HfxTayOz) films were successfully obtained through wet oxidation at different temperatures (400-1000 degrees C), showing a phase transformation and densification process. Beyond 800 degrees C, film thickness increased due to growth and interfacial layer formation, along with phenomena related to nitridation and passivation.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Energy & Fuels
Kar Yeow Tan, Hock Jin Quah
Summary: In this study, a nitrogen-infused wet oxidation process was conducted at different temperatures on GaxCeyOz films deposited on a silicon substrate, resulting in varying film thicknesses and electrical characteristics. The film wet oxidized at 800 degrees Celsius demonstrated the best leakage current density-electric field characteristic, showing a soft breakdown at 1.95 MV/cm and outperforming the other films in terms of electrical performance.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Saad Milad Ali Nsar, Zainuriah Hassan, Kuan Yew Cheong, Way Foong Lim
Summary: This study presents a novel approach to synthesize CeO2 nanostructures using extract of Pandanus amaryllifolius leaves as a stabilizing agent. The effects of Monoethanolamine (MEA) on the crystal growth of CeO2 nanostructures were investigated by preparing two types of nanostructures (with and without MEA) using the same precursors. The samples were characterized using various techniques, and the results showed that MEA can enhance the crystal growth and stability of CeO2 nanostructures.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Engineering, Electrical & Electronic
Ahmad Sauffi Yusof, Sidi Ould Saad Hamady, Christyves Chevallier, Nicolas Fressengeas, Zainuriah Hassan, Sha Shiong Ng, Mohd Anas Ahmad, Way Foong Lim, Muhd Azi Che Seliman
Summary: In this study, a two-layer model was used to investigate the electrical properties of InGaN epilayers grown on a GaN substrate. The study optimized the growth process to obtain high-quality InGaN epilayers and analyzed their structural, optical, and surface morphology properties. The electrical transport properties of InGaN were measured using the van der Pauw/Hall effect method combined with the two-layer model for the first time.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Way Foong Lim, Ainita Rozati Mohd Zabidi
Summary: The effects of post-sputter oxidation time on cerium films were investigated, and it was found that the oxidation time can change the chemical composition and electrical properties of the films.
EMERGENT MATERIALS
(2022)
Article
Energy & Fuels
Kammutty Musliyarakath Abdul Shekkeer, Kuan Yew Cheong, Hock Jin Quah
Summary: The effects of post-deposition annealing temperature on metal-organic decomposed cerium oxide precursor spin-coated on n-type Si substrate were investigated. It was found that nitrogen could inhibit further oxidation of the Si surface. However, excessive formation of SiO2 interfacial layer at 1000 degrees C resulted in a permanent dielectric breakdown. The CeO2 passivation layer annealed at 800 degrees C exhibited low trap density and negligible formation of interfacial layer, making it a promising high k passivation layer.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Kammutty Musliyarakath Abdul Shekkeer, Kuan Yew Cheong, Hock Jin Quah
Summary: Quaternary GaxCe1-xOyNz passivation layer was successfully grown on silicon substrate in nitrogen-oxygen-nitrogen (NON) ambient at 800 ℃. The use of NON ambient has effectively prevented the diffusion of oxygen ions to the interface and suppressed the formation of interfacial layer (IL), resulting in improved interface quality.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Engineering, Electrical & Electronic
Saad Milad, Ali Nsar, Zainuriah Hassan, Kuan Yew Cheong, Way Foong Lim, W. F. Lim
Summary: This study introduced the incorporation of CeO2 seed layer for the growth of CeO2 nanostructures using Pandanus amaryllifolius leaf extract as a stabilizing agent. Results showed that samples with CeO2 seed layer demonstrated lower leakage current density regardless of the presence of MEA. The improvement in leakage current density could be attributed to high oxygen composition and adequate oxygen vacancies, while a discrepancy was observed in samples with MEA and without CeO2 seed layer where the oxygen vacancies acted as hole traps degrading the J-V characteristic.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Materials Science, Ceramics
A. J. A. Al-Nidawi, K. A. Matori, M. H. M. Zaid, J. Y. C. Liew, M. A. A. Khushaini, A. R. M. Zain, W. R. M. Mutage, M. A. M. Abuallan, A. M. E. Efa
Summary: This paper reports on the effect of boron addition on the enhancement of elastic properties and Raman shifting in the Surface Plasmon Resonance results for zinc borosilicate glass substrates used for optical biosensor applications. The glass composition was found to significantly influence the physical and elastic moduli of the boron-doped zinc silicate series. The addition of boron led to changes in the glass density and moduli.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Green & Sustainable Science & Technology
Thair Hussein Khazaalah, Iskandar Shahrim Mustafa, M. I. Sayyed, Azhar Abdul Rahman, Mohd Hafiz Mohd Zaid, Rosdiyana Hisam, Muhammad Fadhirul Izwan Abdul Malik, Nabasu Seth Ezra, Hayder Salah Naeem, Nuridayanti Che Khalib
Summary: The study involved doping BaO in Bi2O3-ZnO-B2O3-SLS glass to develop lead-free radiation shielding glasses. Results showed that increasing BaO concentration led to decreased HVL and MFP while increased mu(m), suggesting BaO doped in Bi2O3-ZnO-B2O3-SLS glass is an effective and transparent shielding material against radiation.
Article
Dentistry, Oral Surgery & Medicine
Esra Kul, Reem Abdulrahim, Funda Bayindir, Khamirul Amin Matori, Pinar Gul
Summary: This study evaluated the color stability of different temporary materials under the long-term effect of various staining solutions. It was found that the impact of different solutions on color varied, with cola and coffee solutions leading to greater color changes compared to tea.
DENTAL AND MEDICAL PROBLEMS
(2021)
