Article
Chemistry, Analytical
Erdem Uzun, Esra Yildiz, Esra Ozturk
Summary: This article investigates the photoluminescence (PL) and thermoluminescence (TL) properties of ZrO2 phosphors doped with various rare-earth ions. The study analyzes the crystal structure, thermal properties, morphology, and emission bands of the phosphors. It is found that the doping ions significantly affect the intensity of the emission peaks, and high-dose irradiation leads to the appearance of new emission peaks. The phosphors also exhibit natural TL emission that can be eliminated by heating treatment.
Article
Chemistry, Physical
Li Yang, Jiaqi Wang, Yiyi Zhang, Mei Chen, Xuejiao Wang, Chuang Wang, Qiushi Wang, Cailong Liu
Summary: Si(3)N(4) nanowires doped with rare earth ions were successfully synthesized using plasma assisted direct nitridation method. The prepared nanowires were characterized and their properties were investigated. This study provides an effective strategy for doping large-size functional atoms in Si(3)N(4) nanowires.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Multidisciplinary Sciences
Jeongmo Kim, Reinaldo Chacon, Zijun Wang, Eric Larquet, Khalid Lahlil, Aymeric Leray, Gerard Colas-des-Francs, Jongwook Kim, Thierry Gacoin
Summary: The authors present a novel method to retrieve the three-dimensional orientation of luminescent, lanthanide-doped nanorods from a single-shot emission spectrum, eliminating the need for complicated optical setups typically required to determine the orientation of nanoscale objects in three-dimensional space.
NATURE COMMUNICATIONS
(2021)
Article
Materials Science, Ceramics
Shun Zhou, Dabin Lin, Yongming Su, Lin Zhang, Weiguo Liu
Summary: Ferroelectric thin films doped with rare earth ions were successfully grown using a sol-gel/spin coating method, showing improved electrical properties and photoluminescence performance. Doping led to higher dielectric permittivity and remanent polarization in the films, along with strong emission at specific temperature ranges.
JOURNAL OF ADVANCED CERAMICS
(2021)
Article
Materials Science, Multidisciplinary
Vaibhav Chauhan, Pratik Deshmukh, S. Satapathy, Praveen C. Pandey
Summary: This article investigates the effects of Li+ doping on the crystallinity and emission spectrum of Zn-3(VO4)(2) phosphor, demonstrating enhanced broad excitation and emission in the visible region, as well as increased emission band lifetime. The results show potential for utilization of Li+ doped zinc vanadate phosphor with near-UV LED chips to achieve white light.
RESULTS IN PHYSICS
(2022)
Article
Chemistry, Physical
Gibin George, Jacob Hayes, Candyce N. Collins, Jason E. Davis, Lei Yu, Yulin Lin, Jianguo Wen, Daryush Ila, Zhiping Luo
Summary: This study investigates the photoluminescence and cathodoluminescence characteristics of rare-earth-doped CaF2 nanoparticles and their composite monoliths with epoxy. The results show that the luminescence intensity increases as the particle size decreases for single-doped particles, but decreases for codoped particles. Additionally, Eu2+- and Tb3+-codoped CaF2 nanoparticles exhibit red emission.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Physics, Applied
R. F. Babayeva
Summary: The photoconductivity characteristic of undoped and gadolinium (Gd)/dysprosium (Dy) co-doped layered p-GaSe semiconductor is experimentally investigated in this study. A model is proposed to explain the obtained results. The study shows the possibility of creating multi-band photodetectors with stable and reproducible parameters, and activates the characteristics of p-GaSe single crystals with rare-earth ions mentioned, with a concentration ranging from 10(-2) to 10(-1) at.%.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2023)
Article
Anatomy & Morphology
Salhah D. Al-Qahtani, Razan M. Snari, Kholood Alkhamis, Mona Alhasani, Saham F. Ibarhiam, Turki M. Habeebullah, Nashwa M. El-Metwaly
Summary: The anticounterfeiting of commercial products has been improved using photochromism as a fascinating approach. The mechanical reliability of the anticounterfeiting nanocomposite has to be enhanced. Rare-earth doped aluminate/polypropylene hybrid nanofibers were successfully produced by electrospinning, showing mechanical stability and high photoluminescence, making them ideal for anticounterfeiting applications. The UV-induced photochromic properties of the nanocomposite films were studied, ensuring the complete transparency of the REA-PP film.
MICROSCOPY RESEARCH AND TECHNIQUE
(2022)
Article
Materials Science, Multidisciplinary
O. Dimitrov, I. Stambolova, T. Babeva, K. Lazarova, G. Avdeev, M. Shipochka, R. Mladenova, S. Simeonova
Summary: In this study, high-quality ZrO2 films doped with samarium were obtained using the sol-gel method. The morphology, structure, and optical properties of the films were investigated, showing a phase transition and high emission intensity ratio. These findings suggest the potential of the films for photonics applications.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Ceramics
Masayuki Nogami, Vu Xuan Quang, Ho van Tuyen, Le Xuan Hung
Summary: Rare-earth doped glasses have shown potential applications in light-emitting devices. However, developing silicate glasses with excellent photoluminescence performance remains difficult. In this study, we investigated the reduction of rare-earth ions in doped glasses through heating in a hydrogen gas atmosphere or X-ray irradiation. We successfully synthesized Al2O3-SiO2 glasses doped with Sm3+ and Eu3+ ions, which exhibited strong photoluminescence. The Sm3+ and Eu3+ ions were reduced to their divalent states when heated in hydrogen gas, while only Sm3+ ions were reduced to Sm2+ ions when irradiated with X-rays. It was also found that the reduced Sm2+ ions in the glass could easily be oxidized to Sm3+ ions by heating in air. The fast redox reaction between Sm3+ and Sm2+ ions makes the Sm3+-doped Al2O3-SiO2 glasses suitable for X-ray therapy and sensor applications.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Applied
Salhah D. Al-Qahtani, Meshari Aljohani, Ameena M. Al-bonayan, Hatun H. Alsharief, Salhah H. Alrefaee, Awatif Rashed Z. Almotairy, Nashwa M. El-Metwaly
Summary: This study presents a novel photoluminescent security nanofiber material for advanced anticounterfeiting applications. By immobilizing lanthanide-activated aluminate nanoparticles on electrospun polyvinyl chloride nanofibers, a photostable and durable nanofiber film was successfully developed. The photoluminescent effect can be controlled by adjusting the quantity of nanoparticles. The nanofiber film is colorless under visible light but exhibits green luminescence when illuminated with UV light.
REACTIVE & FUNCTIONAL POLYMERS
(2023)
Review
Materials Science, Multidisciplinary
Yan Chen, Donglai Zhang, Zhong Peng, Maodan Yuan, Xuanrong Ji
Summary: The article introduces the applications and potential values of rare-earth doped piezoelectric materials in various fields, emphasizing their characteristics of combining piezoelectric and photoluminescence properties.
FRONTIERS IN MATERIALS
(2021)
Article
Materials Science, Ceramics
Yixuan Lv, Le Shi, Jian-Wen Shi, Yijun Zhang, Dandan Ma, Yonghong Cheng, Chunming Niu
Summary: The study successfully increased the photoluminescence quantum yield (PLQY) of vanadate garnet phosphors by introducing indium ions. These indium-doped vanadate garnet phosphors have high PLQY and broad emission, making them suitable for WLED device applications.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Optics
S. Maji, Satendra Kumar, Sujoy Sen, K. Sundararajan
Summary: A series of Y(BA)3:Ln3+ (BA=Benzoic acid, Ln = Eu, Tb) complexes with different doping concentration of Ln3+ (0-10 mol%) were synthesized by wet chemical method. The synthesized complexes were analyzed using XRD, FTIR, TGA, and photoluminescence techniques. Y(BA)3:Eu3+ complex emitted narrow red emission at 614 nm and Y(BA)3:Tb3+ complex emitted green emission at 544 nm when excited through ligand absorption around 280 nm. Doped Eu3+ complexes (Y(BA)3:Eu3+) exhibited higher luminescence compared to the undoped complex Eu(BA)3, while no enhancement was observed in the case of Tb3+. The enhanced luminescence of Y(BA)3:Eu3+ complex was explained using luminescence decays. Different emission parameters of 5D0 emission level of Eu3+ were also determined. The results suggest that these complexes can serve as good candidates for organic phosphors.
JOURNAL OF LUMINESCENCE
(2023)
Article
Chemistry, Multidisciplinary
Ping Chen, Zexin Li, Dongyan Li, Lejing Pi, Xitao Liu, Junhua Luo, Xing Zhou, Tianyou Zhai
Summary: In this study, a new luminescent system of 2D rare earth material EuOCl with ultranarrow linewidth at room temperature is successfully synthesized. The as-synthesized EuOCl flakes exhibit abnormal temperature-dependent photoluminescent properties, opening up new possibilities for the application of 2D rare earth materials in the field of luminescence at room temperature.