Article
Materials Science, Ceramics
Shanshan Hu, Shuang Lu, Ying Hong, Aihua Yao, Baolong Wang, Wei Li, Benli Chu, Qinyu He, Jun Cheng, Yinzhen Wang
Summary: Sm3+ doped LaBMoO6 phosphors emit orange light with a decay lifetime of milliseconds under excitation, and their chromaticity coordinates are located in the orange region, showing great thermal stability. These phosphors can be utilized as orange-emitting materials in W-LED devices.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
P. Sailaja, Sk Mahamuda, K. Swapna, M. Venkateswarlu, A. S. Rao
Summary: This study investigated the asymmetry around Sm3+ ions and PL properties of OCBT glasses, suggesting that OCBT 1.0 mol% Sm glass is suitable for reddish orange laser applications.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2021)
Article
Chemistry, Inorganic & Nuclear
Hongrui Xiong, Xi Gao, Fei Yuan, Qiqi Wu, Wentao Zhang, Yi Huang
Summary: The orange-emitting Ca5-x(PO4)(2)SiO4:xSm(3+) (C5PSO:Sm3+) phosphor was prepared via a simple solid-state method, and codoped with A(+) (A = Li, Na, and K) for improved luminescence performance. The effects of Sm3+ doping and Sm3+/A(+) codoping on the crystal structure and luminescence performance were investigated. A significant improvement in luminescence intensity was achieved through charge compensation of codoped A(+) ions.
DALTON TRANSACTIONS
(2022)
Article
Materials Science, Ceramics
O. Soriano-Romero, E. F. Huerta, A. N. Meza-Rocha, U. Caldino
Summary: This study presents a spectroscopic analysis of potassium-zinc phosphate glasses doped with Sm3+ and co-doped with Tb3+/Sm3+. The glasses showed high transparency in the visible region and have potential as luminescent materials. The Sm3+ doped glass exhibited orange emission with high color purity and correlated color temperature. The Tb3+/Sm3+ co-doped glass displayed emissions with different tones and high color purity.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
Nguyen Van Hai, Nguyen Thi Khanh Linh, Dinh Thi Hien, Bui Thi Hoan, Nguyen Minh Tu, Vuong-Hung Pham, Duy-Hung Nguyen, Vu Tuan Anh, Hoang Nhu Van
Summary: High-efficiency energy transfer from Sm3+ to Eu3+ was achieved in CeO2 phosphors, leading to improved emission efficiency of Eu3+. The experimental results confirmed the high-efficiency energy transfer and investigated various properties of the synthesized phosphors.
Article
Materials Science, Multidisciplinary
Mengmeng Fu, Qi Wu, Chenzhang Gu, Shanshan Hu, Shuang Lu, Baolong Wang, Ying Hong, Yinzhen Wang
Summary: Sm3+ and Sm3+/Eu3+ co-doped LGBO powders were prepared and their micro-structure, luminescent characteristics, energy transfer and fluorescence lifetimes were studied. Under 278 nm excitation, Gd3+ absorbed and transferred energy to enhance the luminescent intensity of Sm3+ at 567, 611, and 649 nm. Under 405 nm excitation, the emission spectra of Sm3+/Eu3+ co-doped LGBO phosphors showed yellow-orange and red light corresponding to the transitions of Sm3+ and Eu3+, respectively. The energy transfer mechanism was analyzed, and the energy transfer efficiency was calculated to be 31.2% at a Sm3+ concentration of 4mol%. LGBO: Sm3+/Eu3+ phosphors have promising applications in solid-state lighting, display devices, bio-imaging, etc.
Article
Chemistry, Physical
Xiaoyue Jin, Yan Xie, Rong Tang, Xue Geng, Junzhi Che, Liyang Lou, Wensheng Chen, Bin Deng, Ruijin Yu
Summary: A novel double perovskite Sr3WO6:Sm3+, Na+ phosphor was synthesized with excellent luminescent performance and thermal stability. The phosphor showed high general color rendering index and good correlated color temperature, making it a promising candidate for near-ultraviolet chip-based WLED and solid-state lighting.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Tijana Stamenkovic, Dejan Pjevic, Jugoslav Krstic, Maja Popovic, Vladimir Rajic, Vesna Lojpur
Summary: A series of SrGd2O4 samples doped with different concentrations of Sm3+ and Dy3+ were prepared through glycine-assisted combustion synthesis. X-ray Powder Diffraction investigation confirmed the presence of pure orthorhombic lattice SrGd2O4. Energy Dispersive X-ray Spectroscopy showed that the desired elements were incorporated in the structure. Field Emission Scanning Electron Microscopy revealed the morphology of the samples as porous aggregated particles consisting of approximately 50 nm-sized spherical particles. Mercury Intrusion Porosimetry demonstrated the presence of a real permanent 3D pore structure. X-ray Photoelectron Spectroscopy confirmed the successful incorporation of Dy3+ and Sm3+ ions. Down-conversion luminescence spectra showed typical emission transitions for Sm3+ and Dy3+ ions. The energy band gap of the doped samples was calculated to be 4.3 eV using UV-VIS Diffuse Reflectance Spectroscopy. UV-VIS Absorption Spectroscopy observed the photocatalytic degradation process, with approximately 50% of Rhodamine B being mineralized after 4 hours of simulated Sun exposure.
SURFACES AND INTERFACES
(2023)
Article
Materials Science, Ceramics
Sumandeep Kaur, Vaibhav Katyal, Vaishakh Plakkot, Nisha Deopa, Aman Prasad, A. S. Rao
Summary: In this study, Sm3+ ions doped borosilicate glasses were synthesized with different concentrations (0.5 to 2.5 mol%) using the melt quench method. The structural analysis and optical properties of these glasses were studied, revealing characteristics such as amorphous nature, band gap energy, and photoluminescent excitation and emission peaks.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Materials Science, Ceramics
Tong Wang, Chunhui Su, Hongbo Zhang, Xiangyu Zou, Yimeng Yan, Siying Wang
Summary: Transparent glass-ceramics doped with Sm3+ were prepared and Ca2Ti2O6 nanocrystals were formed. Under the optimal heat treatment condition, the glass-ceramics had small grain size and high light transmittance. Additionally, the highest luminescence intensity was observed at a Sm3+ doping concentration of 0.5%.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Optics
Wei Mun Cheong, Mohd Hafiz Mohd Zaid, Yap Wing Fen, Tan Sin Tee, Khamirul Amin Matori, Zhi Wei Loh, Mohd Zul Hilmi Mayzan
Summary: A series of [Sm2O3]x[(ZnO)0.5 (B2O3)0.1 (SLS)0.4]1-x glasses were fabricated and the influence of Sm3+ concentration on their structural and optical properties was investigated. The samples exhibited amorphous behavior as confirmed by XRD and FTIR. Increasing dopant concentration resulted in enhanced optical absorption intensity and reduced optical band gap. The Sm3+ doped glasses showed intense orange-reddish emission and potential as glass phosphor for optoelectronic devices.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Yangyinyi Duan, Xiangping Li, Rensheng Shen, Yuhang Zhang, Xin Wang, Zhipeng Guan, Ke Wang, Yongze Cao, Xizhen Zhang, Baojiu Chen
Summary: Sm3+ doped sodium germanate glasses with suitable composition and good luminescence thermal stability were synthesized using high temperature melt-quenching technique. The luminescence performance and optical transition properties of Sm3+ in the glasses were studied. The concentration dependent luminescence quenching of the (4)G(5/2) level of Sm3+ was found to be due to the electric dipole-dipole interaction among Sm3+. Temperature dependent luminescence characteristics and thermal quenching behavior were also investigated, showing excellent luminescence thermal stability.
MATERIALS RESEARCH BULLETIN
(2022)
Article
Chemistry, Physical
K. Boonin, P. Yasaka, P. Yamchumporn, N. Triamnak, S. Kothan, J. Kaewkhao
Summary: In this study, the effect of trivalent samarium ion dopant on the properties of tellurite and fluorotellurite glasses was investigated. Various properties and spectral characteristics were found, with four different emission spectra peaks observed as a result of electron radiative relaxation from specific energy levels.
RADIATION PHYSICS AND CHEMISTRY
(2021)
Article
Chemistry, Physical
Chao Wei, Jie Zhang, Zan Sun, Jingyu Ran, Lei Guo, Jiayue Sun, Shuai Zhu, Xiangqian Ran, Shuo Li, Chen Jiang, Youjiang Wen
Summary: In this study, a novel Ba2La8(SiO4)(6)O-2:Sm3+ phosphor was synthesized and the hydrolysis of silicate phosphor was suppressed using a hydrophobic agent. The phosphor exhibited excellent luminescence properties, thermal stability, and dispersion in PVA solution.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Anqi Zhang, Zhen Sun, Mochen Jia, Zuoling Fu, Byung Chun Choi, Jung Hyun Jeong, Sung Heum Park
Summary: This study investigated the properties of Sm3+-activated niobate double-perovskite orange-red emitting phosphors prepared by solid-state reaction, including their crystal structure, luminescent properties, thermal stability, and temperature sensing characteristics. The results showed that the phosphors have potential applications in lasers and LED devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Environmental Sciences
Asif Khan, Muhammad Naeem, Ivar Zekker, Muhammad Balal Arian, Greg Michalski, Abbas Khan, Nasrullah Shah, Syed Zeeshan, Hameed Ul Haq, Fazle Subhan, Muhammad Ikram, Muhammad Ishaq Ali Shah, Idrees Khan, Luqman Ali Shah, Muhammad Zahoor, Amama Khurshed
Summary: This study analyzed the eutrophication caused by nitrate as an important water pollutant in different water sources in Pakistan. Statistical approaches were used to determine the association of nitrate with other parameters in groundwater. Different physicochemical parameters were studied, and hierarchical cluster analysis was conducted to find links between groundwater quality factors.
ENVIRONMENTAL TECHNOLOGY
(2023)
Article
Chemistry, Physical
Muhammad Irfan, Luqman Ali Shah, Abbas Khan, Muhammad Farooq, Mohib Ullah, Muhammad Ismail
Summary: With the rapid development in various fields, the demand for hydrogels with specific properties is increasing. In this study, a flexible zwitterionic hydrogel was synthesized and its properties were tested using a rheometer. The hydrogel showed pH sensitivity and rheological properties, making it suitable for applications in industries such as painting and cosmetics.
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Irfan Ullah, Tanveer ul Haq, Aqeel Aslam Khan, Abid Inayat, Muhammad Shoaib, Ali Haider, Murtaza Saleem, Syed Mustansar Abbas, Michael A. Pope, Irshad Hussain
Summary: This study presents the development of a hierarchically nanostructured cathode material by encapsulating sodium decavanadate Na6V10O28 in the scaffold of manganese-based metal-organic framework. The uniform distribution of NaDV in the pores of Mn-BTC enables multielectron redox properties, while the diverse 3D diffusion channels and flexible architecture of Mn-BTC ensure high intercalation capacity. The NaDV@Mn-BTC cathode material exhibits a high reversible capacity of 137 mAh/g at 1 C rate, suggesting its potential as a high-energy cathode material for aqueous batteries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Environmental
Muhammad Naeem, Saileen Khan, Ivar Zekker, Fazle Subhan, Muhammad Salman, Alamgir, Asmat Ullah, Saleem Ullah, Ali Hussain, Abbas Khan, Mohammad Ishaq Ali Shah, Muhammad Ikram, Muhammad Zahoor, Luqman Ali Shah, Roy Hendroko Setyobudi, Mohamad Nor Azra, Asif Khan
Summary: This study investigated the effects of strontium aluminate europium and dysprosium doping (SAEDD) on the properties of cement mortar. The addition of 20% SAEDD improved the luminescence and compressive strength of the mortar, lasting up to 10 hours. XRD, FTIR, EDX, and SEM techniques were used to analyze the performance of SAEDD. This work could contribute to novel advancements in chemistry and chemical engineering, promoting sustainable environments.
JOURNAL OF HAZARDOUS TOXIC AND RADIOACTIVE WASTE
(2023)
Article
Environmental Sciences
A. Khan, S. Noor, M. S. Khan, R. Khattak, A. Malik, U. U. Rahman, I. Zekker, N. U. Rahman, L. A. Shah
Summary: Aromatic triarylmethane dyes residues cause serious water pollution in the environment. Adsorbents such as graphene oxide (GO) have been found to effectively remove crystal violet (CV) dye from wastewater. Different parameters and experimental results indicate that GO, graphite, and graphene quantum dots (GQDs) have high removal capacities for CV dye, with GQDs showing the highest efficiency. Thermodynamic and kinetic experiments suggest that the adsorption process is spontaneous, endothermic, and follows both pseudo-first and pseudo-second-order kinetics. The Langmuir adsorption isotherm model fits the adsorption data best, indicating chemisorption with single coverage layer.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Muhammad Yaseen, Abbas Khan, Muhammad Humayun, Saima Farooq, Nasrullah Shah, Shaista Bibi, Zafar A. K. Khattak, Ata Ur Rehman, Sajjad Ahmad, Shah Masood Ahmad, Mohamed Bououdina, Habib Ullah
Summary: Water is crucial for the survival of organisms, but it often contains chemical contaminants that have a direct impact on the ecosystem. Semiconductor photocatalysis is a cutting-edge technology for treating wastewater pollution, and a Fe3O4-SiO2 nanocomposite is fabricated using facile co-precipitation and Stober methods. The nanocomposite shows high effectiveness in removing methylene blue and methyl orange dyes, and it also exhibits antioxidant and antileishmanial activity.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2023)
Article
Biochemistry & Molecular Biology
Ubaid Ur Rahman, Muhammad Humayun, Abbas Khan, Saima Farooq, Muhammad Sadiq, Mohamed Bououdina, Nasrullah Shah
Summary: This research focuses on the isolation and modification of cellulose for the removal of organic pollutants. The cellulose fibers collected from Olive Europa plant were purified and divided into three parts: thermally activated cellulose, chemically modified cellulose, and un-functionalized cellulose. Thermally activated cellulose showed the highest efficiency in removing the dye.
Article
Chemistry, Physical
Abbas Khan, Sumayya Khan, Nazish Khan, Sumayya Naz, Mohamed Bououdina, Noor Rehman, Muhammad Humayun, Nasrullah Shah, Natasha Anwar, Hazrat Ali
Summary: This study investigates the interaction between cellulose-based colloidal microgel dispersions and anionic surfactant sodium dodecyl sulfate (SDS) at different concentrations. A responsive microgel sample based on Cellulose-P(NIPAAm-MAA) was prepared and used for the study. Different physicochemical techniques were employed to investigate the interactions of SDS in premicellar and micelle regions with the microgel. The results show that various experimental variables, such as polymer gel/surfactant ratio and temperature, quantitatively and qualitatively affect the gel-surfactant interaction.
ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS
(2023)
Article
Mathematics
Najib Ullah, Abdullah Shah, Jamilu Sabi'u, Xiangmin Jiao, Aliyu Muhammed Awwal, Nuttapol Pakkaranang, Said Karim Shah, Bancha Panyanak
Summary: This article proposes a one-parameter scaling memoryless DFP algorithm for solving a system of monotone nonlinear equations with convex constraints. The algorithm is matrix and derivative-free with low memory requirements and is globally convergent under some mild conditions. Numerical comparison and image restoration problems demonstrate the efficiency of the algorithm.
Article
Nanoscience & Nanotechnology
Manzoor Hussain, Touseef Rehan, Mazhar Ul-Islam, Omer Shehzad, Abbas Khan, Muhammad Wajid Ullah, Ayesha Baig, Guang Yang, Nasrullah Shah
Summary: A core-shell particles latex composite hydrogel (PEG-CS) was prepared for controlled drug release of ciprofloxacin. Compared to the control PEGDA-based hydrogel, the PEG-CS hydrogel exhibited higher drug loading efficiency. The kinetic and equilibrium adsorption models suggested that the drug loading followed pseudo-second-order kinetics and the Langmuir adsorption isotherm, respectively. The findings indicate that the fabricated PEG-CS hydrogel could be an efficient material for sustained drug release.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2023)
Article
Medicine, Research & Experimental
Haider Ali Khan, Mehreen Ghufran, Sulaiman Shams, Alam Jamal, Muhammad Ayaz, Mehran Ullah, Abbas Khan, Mohammad Imran Khan, Zuhier A. Awan
Summary: Therapeutic moieties derived from medicinal plants and plants-based ecofriendly processes for producing selenium nanoparticles have shown great promise in managing type 2 diabetes mellitus. The current study aimed to assess the anti-diabetic potentials of Fagonia cretica mediated biogenic selenium nanoparticles (FcSeNPs) using in-vitro and in-vivo approaches. FcSeNPs demonstrated dose-dependent inhibition against alpha-amylase and alpha-glucosidase and significant antioxidant activity against DPPH and ABTS radicals. Treatment with FcSeNPs resulted in a considerable decline in blood glucose levels in STZ-induced diabetic mice and improved biochemical parameters related to pancreas, liver, kidney, and lipid profile.
BIOMEDICINE & PHARMACOTHERAPY
(2023)
Article
Chemistry, Physical
Noor Rehman, Zahid Hussain, Hidayat Ullah, Muhammad Naveed Khan, Abbas Khan, Nasir Mehmood Khan, Inam Ullah Mian
Summary: This study presents a multi-step, environmentally friendly method to isolate cellulose and nanocellulose from Ailanthus altissima plants. The analysis of purified cellulose showed a degree of crystallinity of 67.41% and a crystallite size of 43.4 & ANGS; using X-ray Diffraction (XRD) and modern techniques. Thermogravimetric analysis (TGA) revealed the thermal degradation pattern of the cellulose and nanocellulosic material. Scanning electron microscopy (SEM) was used to study the morphological changes in the surface of lignocellulosic fibers after chemical treatment. This novel biomass source holds great potential for various applications in industrial processes.
ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Abbas Khan, Kashif Shahid, Sumayya Khan, Muhammad Humayun, Mohamed Bououdina, Noor Rehman, Sabiha Sultana, Khurram Shahzad Munawar
Summary: In drug development, studying the physicochemical properties of drugs under various solution conditions is crucial for understanding their mechanism of action and interaction with bioactive compounds. This study investigates the effects of co-solvent and co-solute on the properties of Montelukast sodium and its interactions with DNA. Measurements of density, viscosity, and surface tension were used to determine the physicochemical, volumetric, and thermodynamic properties of Montelukast sodium. The addition of ethanol and sodium chloride to the drug solution, as well as changes in concentration and temperature, had different impacts on the measured parameters.
ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS
(2023)
Review
Energy & Fuels
Dan Tang, Guang-Lei Tan, Guo-Wei Li, Jin-Guang Liang, Shah Masood Ahmad, Ayesha Bahadur, Muhammad Humayun, Habib Ullah, Abbas Khan, M. Bououdina
Summary: Hydrogen is a clean, versatile, and energy-dense fuel that has the potential to play a key role in a low-carbon energy future. This paper reviews the state-of-the-art in hydrogen generation methods and storage technologies, including water electrolysis, gasification, dark fermentation, steam reforming, photocatalytic water splitting, and water thermolysis for generation, and compression, liquefaction, liquid organic carriers, and solid-state storage for storage. The development of efficient and cost-effective hydrogen generation and storage technologies is essential for the widespread adoption of hydrogen as a clean energy source.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Multidisciplinary
Muhammad Anas, Asad Ali, Abdul Ghaffar Khan, Aiyeshah Alhodaib, Abid Zaman, Tanveer Ahmad, Vineet Tirth, Ali Algahtani, Shohab Ahmad, Barno Sayfutdinovna Abdullaeva, Tawfiq Al-Mughanam, Muhammad Aslam
Summary: In this study, new compositions of Sr0.8Mg0.2(Sn1-xZrx)O-3 0.00 ≤ x ≤ 0.06 ceramics were designed and synthesized. The influence of Zr doping on the phase, microstructural, optical, and dielectric properties was thoroughly investigated.
Article
Optics
R. B. Adamov, G. A. Melentev, I. V. Sedova, S. V. Sorokin, G. V. Klimko, I. S. Makhov, D. A. Firsov, V. A. Shalygin
Summary: This study investigates the THz luminescence in doped nanostructures with GaAs/AlGaAs quantum wells under interband optical pumping. The results show that the spatial separation of donors and acceptors can greatly enhance the integrated intensity of THz emission.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Yanru Li, Lei Zhong, Sha Jiang, Yutong Wang, Binyao Huang, Guotao Xiang, Li Li, Yongjie Wang, Chuan Jing, Xianju Zhou
Summary: In this study, a ratiometric luminescent thermometry based on dual-emission centers was developed using co-doped CaNb2O6 phosphors with Bi3+ and Pr3+. The obtained samples exhibited good thermosensitive and thermochromic characteristics, with a maximum absolute sensitivity of 0.09 K-1 @ 528 K and a maximum relative sensitivity of 2.17 % K-1 @ 453 K.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Yujing Gong, Yeqing Wang, Zhiyuan Wang, Yijian Sun, Yi Yu
Summary: Single crystals of Dy3+ single-doped and Dy3+/Tb3+ co-doped CaYAlO4 were grown and analyzed. The incorporation of Tb3+ resulted in increased absorption and emission cross sections. The fluorescence lifetimes and branching ratios of the yellow emission were affected by the presence of Tb3+. The deactivation effect of Tb3+ ions and energy transfer mechanism were also discussed.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Lu Chen, Zhuangzhuang Ma, Jian Chen, Wang Guo
Summary: This study focuses on enhancing the thermal robustness of phosphor converter materials by preparing composite ceramics of YAG:Ce combined with high-thermal-conductivity MgO. The composite ceramics showed high density and thermal conductivity at the optimum temperature of 1400℃. Stable laser-driven white light was obtained under blue laser excitation.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Yuwei Wu, Chunhui Niu, Lei Wang, Mingqing Yang, Shiyu Zhang
Summary: Er3+-doped germanate-tellurite glasses were prepared and their structure, luminescent, and temperature-sensing properties were studied. The glass exhibited large values of O2 and O6 and its luminescence intensity varied with temperature.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Kensei Ichiba, Takumi Kato, Kenichi Watanabe, Yuma Takebuchi, Daisuke Nakauchi, Noriaki Kawaguchi, Takayuki Yanagida
Summary: In this study, Eu-doped YVO4 single crystals with different concentrations were fabricated to evaluate their photoluminescence and scintillation properties. The results showed that the samples doped with Eu exhibited emission peaks due to 4f-4f transitions in PL and scintillation spectra. Based on the pulse height spectra, the light yield of the Eu-doped samples increased with increasing Eu concentration, while the afterglow level decreased.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Daiwen Xiao, Hei-Yui Kai, Anjun Huang, Menglin Song, Ka-Leung Wong, Peter A. Tanner
Summary: The emission spectra of Cs2NaEuCl6 nanoparticles synthesized by the hot injection method are explained. The dispersion of the nanoparticles in alkane solvents in the experiment allows the determination of the magnetic dipole radiative rate for the D-5(0) -F-7(1) channel in vacuum, which is in agreement with the calculated value.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Italia V. Barbosa, Geraldine Dantelle, Alain Ibanez, Lauro J. Q. Maia
Summary: The thermal response and luminescence properties of different oxide matrices were evaluated to design more accurate thermal probes. It was found that thermal probes emitting in BW-II provide better thermal sensing with higher signal-to-noise ratio. Additionally, doping Nd3+ in Y2O3 matrix maximizes luminescence intensity, making it a promising matrix for thermal sensing.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Xin Li, Yu Zhang, Hongrui Ren, Lunlong Xie, Yinsheng Di, Mengqing Han, Zhaohui Bai, Quansheng Liu, Liangliang Zhang, Jiahua Zhang
Summary: This study successfully prepared phosphor samples based on Ca3-xLuxSc2-xMgxSi3O12:Ce3+ and investigated their luminescence properties. With the increase in Lu-Mg concentration, the peak of the sample redshifted, but the thermal stability gradually decreased. The LD devices made from CLSMS:Ce3+ fluorescent materials showed a decrease in cyan-green light and an increase in red light as the Lu-Mg concentration increased.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Tim Pier, Julia Hopster, Thomas Juestel
Summary: This study investigates and reports on several samples of cerium-activated gallium-based garnet phosphors. The optimal activator concentration was found to be 1 atom-%. The size of non-emitting lanthanide ions and the molar concentration of cerium strongly influenced the crystal field splitting, which in turn shaped the excitation and emission wavelengths.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Guijie Zhao, Wei Shi, Xin Xin, Fengcai Ma, Yongqing Li
Summary: This study reveals for the first time the proton transfer pathways and changes in the photophysical properties of P-TNS with three intramolecular hydrogen bonds. The reaction mechanism and driving force for the proton transfer process are explained through analysis of potential energy surface, frontier molecular orbitals, and hydrogen bond parameters, among others.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Li He, Jinshu Huang, Zhengce An, Haozhang Huang, Yu Zhao, Kexin Zhong, Bo Zhou
Summary: In this study, we designed a NaYF4:Yb3+/Tm3+@NaYF4 core-shell nanostructure to achieve thermochromic upconversion and high thermal sensitivity. We found that the blue upconversion emission of Tm3+ decreased while the deep-red emission increased with elevating temperature. The sample also showed a gradual emission color change from blue to purplish-red, and the optimal relative sensitivity reached 2.79% K-1.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Rupesh A. Talewar
Summary: A series of Li2TiO3 phosphors doped with Mn4+ and codoped with Mn4+ and Er3+ were synthesized, which demonstrated the ability of Mn4+ ions to absorb UV-Vis photons and subsequently transfer energy to Er3+ ions, resulting in the emission of near-infrared light. These materials have the potential to enhance the absorption efficiency of Er3+-based luminescent materials.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Xingyuan Ma, Jianfeng Li
Summary: Carbon quantum dots (CQDs) with tunable photoluminescence properties have been synthesized using suitable carbon and dopant sources in an aqueous system. The synthesized CQDs exhibited blue, green, yellow, and red emissions, and solid-state luminescence was achieved through the preparation of solid-state fluorescent films and phosphors. This study provides important technical support for the future development of CQDs synthesis.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
De Bin Fu, Yang Bing Xu, Yu Teng Zhang, Shan Ting Liu, Xiao Fei Yang, Sheng Hua Liu
Summary: A pair of new chiral molecules, (S)-4 and (R)-4, have been designed and synthesized by introducing valine-containing groups at symmetrical positions on the periphery of an indolo[3,2-b]carbazole unit. These molecules exhibit aggregation-induced circular dichroism (AICD) properties in DMF/water mixtures, and in a mixture with 99% water fraction, they show strong, mirror-image, blue circularly polarized luminescence (CPL) signals.
JOURNAL OF LUMINESCENCE
(2024)