Article
Chemistry, Inorganic & Nuclear
Seniye Karakaya, Sema Kurtaran
Summary: In this study, undoped and boron and cerium co-doped ZnO thin films were prepared and their optical, structural, surface, and luminescence properties were investigated. XRD and Raman spectroscopy confirmed the crystalline nature of the films and showed changes in structural parameters. FESEM analysis revealed morphological changes due to doping. AFM analysis indicated changes in surface morphology and roughness. The films exhibited high transmittance values and large band gaps. The effects of Ce doping on the properties of ZnO:B films were investigated in detail.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Partha Kumbhakar, Abhirup Roy Karmakar, Gour Prasad Das, Jayjeet Chakraborty, Chandra S. Tiwary, Pathik Kumbhakar
Summary: The reversible temperature-dependent PL emission quenching properties of Mn2+-doped ZnS QDs have been utilized for the development of a smartphone-based optical thermometer. By studying the temperature-dependent variations of PL, the technique has been successfully applied in polymer films and validated through thermal cycling experiments and the use of a custom Android App for temperature measurement.
Article
Materials Science, Ceramics
Nanchuan Wang, Shibo Guo, Qiaochu Chen, Fengmei Gao, Weiyou Yang, Hui Fu, Jinju Zheng
Summary: The study synthesized a series of Mn2+-doped CsPbCl3 samples with different OAm-Cl contents, finding that the Mn2+ concentration was fixed at 0.65% in the samples and the Mn2+ photoluminescence exhibited an OAm-Cl content-independent lifetime. The excitonic and Mn2+ PL intensities of the NCs were strongly related to the amount of OAm-Cl, with different trends depending on the OAm-Cl content.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Cheng-Cheng Gao, Xue-Na Tang, Jing-Ling Miao, Yu Li, Cuncheng Li, Guang-Ning Liu
Summary: The optical properties of hybrid haloplumbates can be regulated by adjusting the crystal and electronic structures through the use of structure directing agents. The hybrid materials exhibit different band gaps and photoluminescence emissions, allowing for rational tuning of their optical properties.
Article
Physics, Condensed Matter
H. H. Hassan
Summary: A series of Cd1-xHoxS semiconductor quantum dots were prepared for the first time via ethylene glycol assisted solvothermal approach and characterized for their structure and optical properties. Substitution of Cd-atoms by Ho-atoms led to increased crystallite size, decreased optical bandgap, improved luminescence intensity, and reduced surface defects in CdS nanocrystals. The quantum yield of the Cd1-xHoxS nanocrystals reached 89%, showing potential for applications in display panels and QLEDs.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Chemistry, Multidisciplinary
Raul Perea-Causin, Samuel Brem, Ermin Malic
Summary: This study focuses on a microscopic model of phonon-assisted exciton dissociation at small electric fields, tracking the pathway of excitons from optical excitation to dissociation. Intrinsic limits for the quantum efficiency and response time of TMD-based photodetectors are identified, and their tunability with externally accessible knobs is investigated. The work provides insights into fundamental mechanisms behind exciton dissociation and can guide the optimization of TMD-based optoelectronic devices.
Article
Chemistry, Physical
Zhenyuan Wu, Xin Xu, Yujia Gao, Zhengli Lu, Yating Cai, Yating Qu, Ang Li, Xi Huang, Weiwei Meng, Tingting Shi, Pengyi Liu
Summary: In this study, a stable P1 phase Sn-Ge mixed structure (CsSn0.5Ge0.5I3) with an appropriate band gap value of 1.19 eV was discovered, showing unique structural stability and physics properties. The thermodynamic stability of this mixed structure and its native defects under different growth conditions were investigated. The calculation of light absorption confirmed that the P1 phase has a higher light absorption coefficient than that of MAPbI3, indicating excellent light absorption. This work not only provides theoretical guidance for understanding the structural stability of Sn-Ge mixed perovskites, but also offers a useful approach to modulate the stability and optoelectronic properties of Ge-based perovskites through alloy engineering.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Environmental Sciences
Selvaraj Vijayan, Ganapathi Umadevi, Ramasamy Mariappan, Chandran Senthil Kumar, Anbalagan Karthikeyan
Summary: Pure zinc sulfide (ZnS) and Ag-doped ZnS nanoparticles with different weight percentages were prepared using the sol-gel technique. The properties of these nanoparticles were analyzed using various techniques, and it was found that the presence of Ag dopants affected the crystal structure, bandgap values, and photocatalytic activity of the ZnS nanoparticles. The highest degradation efficiency was observed for the 7.5 wt% Ag-doped ZnS nanoparticles.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Azadeh Faridi, Dimitrie Culcer, Reza Asgari
Summary: The study reveals a large and nonlinear band-gap renormalization of monolayer MoS2 when free carriers are added to the conduction band, showing excellent agreement with experimental results. It also discusses the impact of exchange and correlation parts of the self-energy on the band-gap renormalization, as well as the strong dependence of the band-gap renormalization on the surrounding dielectric environment.
Article
Materials Science, Multidisciplinary
B. W. Morgan, M. P. Van Zile, C. M. Petrie, P. Sabharwall, M. Burger, I. Jovanovic
Summary: The simultaneous effects of radiation and thermal annealing on optical absorption in fused silica and sapphire were studied. The results provide valuable information for selecting and placing optical materials in applications such as fission or fusion reactors.
JOURNAL OF NUCLEAR MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
H. Klym, L. Calvez, A. I. Popov
Summary: Modification of free-volume positron trapping defects in GaS2-Ga2S3-CsCl chalcogenide glasses was investigated using positron annihilation lifetime spectroscopy and Doppler broadening of annihilation radiation methods. The addition of CsCl resulted in agglomeration of internal free-volume defects, but excessive CsCl caused a decrease in the size and content of these defects along with water adsorption in nanovoids. The obtained results were confirmed by the correlation analysis of S and W parameters.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Nanoscience & Nanotechnology
Oindrila Halder, Gyanadeep Mallik, Jan Suffczynski, Wojciech Pacuski, Kumar Shidhartha K. Varadwaj, Biswarup Satpati, Satchidananda Rath
Summary: The exciton properties of (Cd, Mn)Se-NrGO hybrid layered nanosheets were studied in a magnetic field, showing enhanced binding energy of the exciton-Mn hybridized state and increased exciton-phonon coupling strength. Circularly polarized magneto-photoluminescence revealed magnetic field induced exciton spin polarization and excitonic giant Zeeman splitting, promising for implementation in spin active semiconductor devices.
Article
Chemistry, Physical
Jose A. Jimenez
Summary: The impact of Cu nanoparticles with distinct plasmonic properties on the Nd3+ near-infrared emission in neodymium and copper co-doped phosphate glass was examined. It was found that the merely plasmonic glass consistently showed quenching of Nd3+ photoluminescence, while the dichroic glass exhibited enhanced near-infrared emission under excitation at 747 and 803 nm. However, the decay times of the Nd3+ 4F3/2 emitting state were similar to the melt-quenched precursor. Scattering effects from Cu nanoparticles are suggested to contribute to the enhancement of photoluminescence.
CHEMICAL PHYSICS LETTERS
(2023)
Article
Materials Science, Multidisciplinary
A. Leal Jr, A. Theodosiou, A. Frizera, A. J. Fernandes, A. Stancalie, A. Ioannou, R. Mihalcea, D. Negut, D. Ighigeanu, K. Kalli, C. Marques
Summary: This letter presents a material analysis of the CYTOP fiber under gamma and electron radiation. The influence of radiation on the CYTOP material composition is studied using FTIR and Raman spectroscopy, with Raman spectroscopy applied to two regions of the fiber. The results show that electron radiation causes a 60% higher variation in material composition compared to gamma radiation in FTIR tests, indicating both radiation conditions induce compositional changes in the CYTOP fiber core.
Article
Materials Science, Multidisciplinary
Pooja, Y. Dwivedi
Summary: In this study, the synthesis of Tb(Sal)(3)Phen complex and the fabrication of polymeric nanofibres were reported. It was found that Tb3+ ions emitted brighter light in PVA nanofibres compared to PAN nanofibres, and the PAN nanofibres had a smoother surface. Additionally, a delay in the relaxation channels of salicylic acid was observed in the nanofibres.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Materials Science, Ceramics
Monica Andrea Vargas, Eric M. Rivera-Munoz, Jesus E. Diosa, Edgar E. Mosquera, Jorge E. Rodriguez-Paez
Summary: Nanoparticles of zinc oxide and MgO-doped zinc oxide were successfully synthesized using the Pechini polymer precursor method. The doping altered the nanoparticles' morphology and optical properties, affecting their capability to remove pollutant molecules. Specifically, ZnO particles doped with 2% Mg demonstrated the highest efficiency in removing methyl orange, with a removal percentage of approximately 73% after 2 hours of testing.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Ramesh Sivasamy, Marutheeswaran Srinivasan, Rodrigo Espinoza-Gonzalez, Edgar Mosquera
Summary: The study focuses on the structure, electronic structure, and optical behavior of hydrogenated triels nitride stirrup nanosheets, revealing them to be n-type semiconductors. The partial density of states confirms significant contributions from the p-orbitals of the triels metal and nitrogen atoms near the Fermi energy level. Mulliken population charge analysis exposes a partial hydridic surface in the nanosheets. Various optical properties of the hydrogenated stirrup triels nanosheets are investigated in different electric field polarizations.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
D. Herrera-Molina, J. E. Diosa, A. Fernandez-Perez, E. Mosquera-Vargas
Summary: Thin films of CdS and Al-doped CdS were deposited on glass substrates using a CBD technique, with structural analysis confirming hexagonal CdS structure and changes in crystallite size and morphology with Al content. Optical properties such as energy band gap and photoluminescence were altered by Al doping, leading to shifts in peak wavelengths.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2021)
Article
Multidisciplinary Sciences
Edgar Mosquera-Vargas, Rocio Tamayo, Mauricio Morel, Martin Roble, Donovan E. Diaz-Droguett
Summary: The study successfully described a purification procedure for multi-walled carbon nanotubes and investigated their hydrogen storage properties under different exposure pressures. Results showed that the morphology, structural characteristics, and specific surface area of the carbon nanotubes greatly influenced the H2 adsorption capacity. The best sample exhibited a maximum adsorption capacity at 12.79 kPa of H2 exposure pressure.
Article
Materials Science, Multidisciplinary
J. Vera, E. Mosquera-Vargas, J. E. Diosa
Summary: Polymeric membrane films based on poly(vinyl alcohol) (PVA) and chitosan (CS) were prepared with the addition of phosphoric acid. The modified membranes showed lower glass transition temperature and melting point, as well as higher conductivity, making them suitable for the fabrication of electrolyte membranes for fuel cells.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Spectroscopy
Edgar Mosquera-Vargas, Carlos Marin
Summary: The structural changes of n-alkanes during melting and freezing processes were investigated using Raman spectroscopy. Different n-alkanes undergo different phase transitions, including the rotator phase and the alpha phase. During freezing, even n-alkanes form the rotator phase before the crystalline solid phase.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Multidisciplinary Sciences
J. D. Lopez, J. E. Diosa, G. Garcia, E. Mosquera, H. Correa
Summary: In this study, molecular dynamic calculations were performed using a proposed inter-ionic temperature-dependent potential to investigate the thermodynamic and structural properties of lead fluoride. The results successfully simulated the anomaly in the dependence of the lattice parameter on temperature.
Review
Multidisciplinary Sciences
Rodrigo A. Munoz Meneses, Gerardo Cabrera-Papamija, Fiderman Machuca-Martinez, Luis A. Rodriguez, Jesus E. Diosa, Edgar Mosquera-Vargas
Summary: Pollution caused by plastic materials poses a negative impact on the health of the planet. Finding solutions to transform discarded plastics into new materials is crucial for establishing a circular and sustainable production model.
Article
Materials Science, Multidisciplinary
J. Martinez, S. Dionizio, N. Gutierrez, E. Mosquera, J. E. Diosa, G. Bolanos, O. Moran
Summary: Heterostructures composed of bismuth ferrite (BiFeO3) and vanadium dioxide (VO2) films were successfully fabricated, and their properties were investigated. The study revealed that the structural transition of VO2 has an impact on the ferroelectric properties of BiFeO3.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
C. J. Aguilar, E. Mosquera, F. Gracia, J. E. Diosa, J. E. Rodriguez-Paez
Summary: Porous nanostructures of PrMnO3 were synthesized using the sol-gel method with different solvents, ethanol and ethylene glycol. The choice of solvent was found to significantly affect the properties of PrMnO3, and the magnetic behavior of the nanostructures also varied with temperature.
MATERIALS RESEARCH BULLETIN
(2022)
Article
Chemistry, Multidisciplinary
Jhonatan Martinez, Edgar Mosquera-Vargas, Victor Fuenzalida, Marcos Flores, Gilberto Bolanos, Jesus Diosa
Summary: Thin films of BiFeO3, VO2, and BiFeO3/VO2 were grown on monocrystalline substrates, and their surface characteristics were studied using various techniques. The films exhibited good adhesion, homogeneous ordering, and low roughness, indicating a good coupling between the materials. The films also showed potential for applications such as resistive memories and solar cells.
Article
Engineering, Multidisciplinary
Edgar Mosquera-Vargas, Daniela Herrera-Molina, Jesus E. Diosa
Summary: TiO2 nanoparticles and TiO2/CS nanocomposites were successfully synthesized and characterized. The degradation capability of these materials towards methyl orange under ultraviolet light was investigated.
Article
Chemistry, Physical
Ramesh Sivasamy, Katherine Paredes-Gil, Jerald Vijay Ramaclus, Edgar Mosquera, Selvam Kaliyamoorthy, Khalid Mujasam Batoo
Summary: This paper provides a systematic understanding of the sandwich-like GaN/MoSe2/GaN heterostructure nanosheet and explores its geometrical structures and electronic, optical, and thermodynamical properties. The results show that the heterostructure exhibits good optical characteristics and stability, making it suitable for applications in photovoltaic, photocatalytic, and optical devices.
SURFACES AND INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Edison Rivera, Rodrigo A. Munoz-Meneses, Lorena Marin, Malka Mora, Jesus A. Tabares, Milton Manotas-Albor, Luis A. Rodriguez, Jesus E. Diosa, Edgar Mosquera-Vargas
Summary: Hematite submicron particles were successfully synthesized from the oil-contaminated ferric oxide precursor obtained from the hot-rolled steel industry in Colombia. The samples, which are difficult to recycle for the steel industry, cause irreparable environmental damage due to poor disposal. By proposing a synthetic route that involves washes with solvent and alcohols, the oil was completely removed, and functional magnetic particles were obtained. Characterization studies showed the majority phase changed from wustite to hematite after the synthesis process, and the structural, optical, and magnetic properties of the samples were studied.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Raju Prasanna-Kumari, Daniela Herrera-Molina, Arturo Fernandez-Perez, Jesus E. Diosa, Edgar Mosquera-Vargas
Summary: CdS:Al thin films were prepared on a glass substrate by the CBD method and characterized by XRD, Raman spectroscopy, AFM, SEM, UV-vis and PL spectroscopies. XRD analysis confirmed a hexagonal structure with preferred (002) orientation in all samples. The crystallite size and surface morphology varied with aluminum content. Raman spectra showed LO vibrational modes and their overtones. The optical properties of CdS thin films were found to be influenced by the incorporation of aluminum.
Article
Materials Science, Multidisciplinary
Deyong Zheng, Huihui Jin, Yucong Liao, Pengxia Ji
Summary: In this study, a highly stable and efficient catalyst, fluorine-doped Co3O4 (F-Co3O4), was developed for hydrogen production by water electrolysis. The F-Co3O4 catalyst exhibited a remarkable reduction in overpotential and demonstrated excellent stability for over 100 hours.
Article
Materials Science, Multidisciplinary
Ziwen Lv, Jintao Wang, Fengyi Wang, Jianqiang Wang, Fuquan Li, Hongtao Chen
Summary: Adding Cu6Sn5 nano particles can effectively inhibit the overgrowth of intermetallic compounds at the interfaces of solder joints in electronic devices, providing a solution to this issue. A new growth mechanism of intermetallic compounds at the interfaces was identified.
Article
Materials Science, Multidisciplinary
Jun Wang, Jiawei Chen, Wanru Liao, Fangyang Liu, Min Liu, Liangxing Jiang
Summary: A BiOI/AgI/Ag plasmonic heterostructure photocathode was successfully designed through electrodeposition, ion-exchange, and illumination methods. This photocathode exhibits superior performance in photoelectrochemical water splitting.
Article
Materials Science, Multidisciplinary
Xiaoxiao Liu, Xianxian Zhou, Xiaotao Ma, Qinbo Yuan, Shibin Liu
Summary: In this study, the authors propose a method to accelerate the reaction of polysulfides in lithium-sulfur batteries using a Ni@OC Mott-Schottky heterojunction as a catalyst. The experimental results demonstrate that the charge redistribution at the Ni@OC interface accelerates electron transfer and enhances catalytic activity, leading to improved reaction kinetics and battery performance.
Article
Materials Science, Multidisciplinary
Dayou Ma, Mohammad Rezasefat, Joziel Aparecido da Cruz, Sandro Campos Amico, Marco Giglio, Andrea Manes
Summary: The matrix has a significant effect on the impact resistance of composite materials. Replacing a brittle polymer with a more flexible one can improve impact resistance, but it poses challenges to standard testing methods. This study designs a new fixture for testing the low-velocity impact of soft composites and investigates the effect of the fixture on the mechanical performance.
Article
Materials Science, Multidisciplinary
Lingchang Wang, Qihang Yang, Huzhen Li, Ming Wei, Qian Wang, Zhenzhong Hu, Mengmeng Zhen
Summary: Bronze titanium dioxide (TiO2(B)) is a promising anode material for lithium-ion batteries due to its high specific capacity. However, its practical applications are hindered by poor conductivity and limited electrochemical kinetics. In this study, TiO2(B)-carbon nanosheets heterostructures are synthesized to enhance the cycling performance and rate capability of TiO2(B).
Article
Materials Science, Multidisciplinary
Atul Thakur, Ritesh Verma, Ankush Chauhan, Fayu Wan, Preeti Thakur
Summary: In this study, BaFe12O19 and BaFe12O19: Epoxy (50:50) nanocomposites were synthesized using the co-precipitation method. The structural information and material properties, such as crystallite size and electrical conductivity, were characterized by XRD, FESEM, EDX, and TEM techniques.
Article
Materials Science, Multidisciplinary
Jingyu Wu, Xinyan Ma, Yong Yang
Summary: A well-defined CoS2@NC(CS-500) hierarchical binder-free catalyst cathode is constructed through in-situ grown of ZIF-67 on carbon cloth and high-temperature carbonization. The cathode shows excellent reaction kinetics and electrochemical performance, providing inspiration for developing advanced Li-CO2 battery catalysts.
Article
Materials Science, Multidisciplinary
Svetlana M. Posokhova, Vladimir A. Morozov, Kirill N. Boldyrev, Dina Deyneko, Erzhena T. Pavlova, Bogdan I. Lazoryak
Summary: This study explores the impact of synthesis method and composition on the structure and luminescence properties of K5Eu1-xHox(MoO4)4 with the palmierite-type matrix. The co-doping of Eu3+ and Ho3+ ions plays a critical role in manipulating charge transfer and luminescence efficiency in the visible and infrared regions.
Article
Materials Science, Multidisciplinary
Jian Wang, Yeting Tao, Jingsheng Wang, Youtian Tao
Summary: A new electron-transport material iTPyBI-CN is developed through non-catalytic C-N coupling reaction. It exhibits better electroluminescence efficiency in organic light-emitting diodes compared to the commercial material TPBI, due to its twisted geometry and higher energy levels.
Article
Materials Science, Multidisciplinary
Tao Zhu, Feng Huang, Shuo Li, Yang Zhou
Summary: This article combines XRD analysis and microscopic structural observation to investigate the changes in limestone after high-temperature treatment. It finds that 500 degrees C is the critical temperature for crystalline and spatial arrangement changes in limestone, and the thermal conductivity, specific heat capacity, and heat storage coefficient gradually decrease after thermal treatment.
Article
Materials Science, Multidisciplinary
Muhammad Haekal Habibie, Fransiska Sri Herwahyu Krismastuti, Abdi Wira Septama, Faiza Maryani, Vivi Fauzia
Summary: This study focuses on the synthesis of zinc oxide nanostructure from zinc recovered from galvanization ash and highlights its potential as a sustainable source of zinc and as an antibacterial agent.
Article
Materials Science, Multidisciplinary
Jingyi Li, Yixin Xing, Wei Gu, Shousi Lu
Summary: In this study, PC@CaP microparticles were fabricated using biomimetic mineralization. The results showed that under environmental stress, PC@CaP exhibited improved stability and antioxidative activity, indicating its potential use in high-added value fields.
Article
Materials Science, Multidisciplinary
Yan Liu, Shunyou Chen
Summary: In this study, TNTs were used as a drug carrier and modified with ZIF-8 and silk fibroin to obtain a new drug loading platform. The results showed that this drug-loaded platform had a good drug release effect in vitro and could promote cell proliferation and osteogenic differentiation.
Article
Materials Science, Multidisciplinary
Chunhui Zhu, Wentao Wang, Qing Zhen, Xinning Huang, Shixin Li, Shaochang Wang, Xiaoping Ma, Xiaoxia Liu, Yalong Jiao, Kai Sun, Zhuangzhi Li, Huaixin Yang, Jianqi Li
Summary: A type of stacking fault is revealed in e-InSe crystal, which is associated with a small stacking-fault energy and shows exceptional plasticity.
