Article
Materials Science, Ceramics
Jiantong Wang, Bowen Wang, Yuhan Teng, Changshuai Gong, Xuyan Xue, Xuejiao Wang, Ji-Guang Li
Summary: A novel K3(Y0.88Yb0.10Er0.02)Si2O7 phosphor was synthesized and investigated for its up-conversion luminescence and optical thermometric performance. The phosphor exhibited strong green UC emission and could sense temperature through fluorescence intensity ratio (FIR) and fluorescence lifetime (FL) modes. The maximum absolute sensitivity (SA) and relative sensitivity (SR) were higher than previous studies, with SA = 156 x 10-4 K-1 (I531/I555, 298 K) and SR = 1.80% K-1 (I519/I555, 298 K) via the FIR mode, and SA = 661 x 10-4 K-1 (548 K) and SR = 9.77% K-1 (298 K) via the FL mode.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Zhenbin Wang, Jiao Xu, Zhenghua Ju, Shanshan Zhao, Pengxiang Pei, Xinyu Ma, Weisheng Liu
Summary: The effects of different Dy3+ concentrations on the properties of Na2CaSn2Ge3O12:Dy3+ phosphors were studied, with the best luminescent performance and longest afterglow time observed at a Dy3+ concentration of 0.6 mol%. The analysis of the luminescent mechanism revealed a dual decay process with fast and slow components.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Optics
Xiaoyang Jin, Zhiying Wang, Yanling Wei, Zuoling Fu
Summary: The rare earth doped Na2CaGe2O6 phosphors exhibit rich emission colors and multiple luminescence modes, making them highly attractive for multilevel anticounterfeiting applications.
JOURNAL OF LUMINESCENCE
(2022)
Article
Chemistry, Physical
Siti Aisyah Abdul Wahab, Khamirul Amin Matori, Sidek Hj Ab Aziz, Mohd Hafiz Mohd Zaid, Mohd Mustafa Awang Kechik, Idza Riati Ibrahim, Mohammad Zulhasif Ahmad Khiri, Nuraidayani Effendy, Muhammad Najibudin Abu Bakar
Summary: The fabrication and characterizations of Co2+ doped Zn2SiO4 using recycled waste white rice husk ash were reported for the first time. The Co2+ doped Zn2SiO4 exhibited blue and green emission properties, making it a potential material for various applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Inorganic & Nuclear
Kai Zhao, Zhihong Ma, Li Yin, Bin Hui, Han Si, Xinlin Tong, Huidong Tang, Peng Cao, Saifang Huang
Summary: This paper reports a highly efficient blue-emitting phosphor with superior thermal stability, which has great potential for solid-state lighting applications.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Materials Science, Ceramics
Yueh-Ting Shih, Siddharth Sundararaman, Simona Ispas, Liping Huang
Summary: New interaction potentials were developed for molecular dynamics simulations to investigate the influence of Mg and Ca on alkaline earth silicates and borates. The elastic moduli of alkaline earth silicate glasses increase with higher modifier content, with magnesium contributing to higher connectivity and more rigid connections compared to calcium. In alkaline earth borates, the presence of N4 leads to a more rigid network structure and higher elastic moduli, particularly in calcium borate.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Optics
Lixin Peng, Leipeng Li, Feng Qin, Changwen Wang, Zhiguo Zhang
Summary: In recent years, the development of optical thermometry has attracted researchers' interest due to its advantages of non-contact and non-invasive temperature measurement. This study successfully constructed a multi-mode optical thermometer based on the luminescent properties of YVO4: Eu3+ phosphor, and evaluated different temperature measurement strategies. The results showed that the strategy based on the luminescence of the host material had the best sensitivity and temperature uncertainty.
JOURNAL OF LUMINESCENCE
(2023)
Article
Optics
Henrik Feuk, Sebastian Nilsson, Mattias Richter
Summary: With the advancement of high-speed phosphor thermometry, it is important to understand the measurement errors induced by laser excitation. This study investigated the impact of kHz laser excitation on the lifetime method for phosphors MFG and YVO4:Tm, and found significant measurement errors for both phosphors. The Maximum Entropy Method was used to analyze changes in the distribution of decay time with changes in laser excitation fluence and repetition rate. The results suggest that the changes in measured decay time cannot be primarily attributed to laser heating, but rather to changes in the decay time distributions caused by laser fluence and irradiance.
JOURNAL OF LUMINESCENCE
(2022)
Article
Optics
Songhe Yan, Yichao Sun, Zishan Zheng
Summary: SrZn2(PO4)2: Mn2+, Nd3+ materials were synthesized using a solid-state reaction method. The prepared materials display long afterglow properties with a yellowish-green emission at 550 nm attributed to the Mn2+ ion and a green emission at 518 nm attributed to the Nd3+ ion. The luminescent and structural properties of the materials were studied by various analysis techniques, revealing the presence of Nd · Sr defects and energy transfer from Nd3+ to Mn2+.
JOURNAL OF LUMINESCENCE
(2023)
Article
Optics
Donglei Wei, Hyo Jin Seo, Yushen Liu, Xifeng Yang
Summary: The development of broadband optical amplifiers for optical communication applications drives the research on rare earth ion (RE)-activated near-infrared (NIR) emissive materials. In this study, Pr3+-doped BiLa2O4.5 phosphors were prepared via a solid-state reaction, and their phase formation, structural characteristics, and broadband NIR emission were investigated. It was found that BiLa2-2xPr2xO4.5 exhibited a wide emission band in the E-, S-, and C- bands, making it a potential candidate for amplifier materials in E- and S-band communication system technologies. The quenching mechanism of 1320 nm luminescence and concentration quenching were discussed.
JOURNAL OF LUMINESCENCE
(2023)
Article
Materials Science, Ceramics
Suyin Zhang, Qinhua Wei, Hang Yin, Gao Tang, Zhenhua Chen, Xiaoli Xu, Laishun Qin
Summary: Pure and Eu2+-activated fluoroborate BaGaBO3F2, a wide band semiconductor with indirect transition characteristic, was synthesized through high-temperature solid-state reaction. The phosphor exhibits a bright blue color under UV light and has a narrow emission band at 425 nm attributed to 4f(6)5d & RARR;4f(7)(S-8(7/2)) transitions. The Eu2+-doped BaGaBO3F2 phosphor shows a high quantum efficiency of 72.5% and can be used as a blue-emitting phosphor in various applications.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
N. N. N. Roslan, W. A. W. Razali, A. R. Tamuri, H. Azhan, Z. Mohamed
Summary: Strontium aluminate phosphors and doped phosphors were synthesized using the solution combustion method. XRD analysis and refinement showed a multiphase structure with increased unit cell volume after doping. The emission spectra revealed green light emission for the doped phosphors.
CHALCOGENIDE LETTERS
(2022)
Article
Engineering, Electrical & Electronic
Ishant Kumar, Arvind K. Gathania
Summary: Sm3+-doped LiBaPO4 phosphors were successfully synthesized by solution combustion method, characterized by various techniques such as XRD, SEM, XPS, FTIR, and photoluminescence spectroscopy. The phosphors exhibit porous morphology, successful doping of the activator, and unique emission peaks at different excitation wavelengths indicating their potential utility in lighting and photonic applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Multidisciplinary
Deepali, M. Jayasimhadri
Summary: A solid-state reaction method was used to synthesize Dy3+/Eu3+ co-activated Na4Ca4Si6O18 phosphors, and their structural, morphological, and luminescence properties were investigated. X-ray diffraction confirmed the phase purity of the material. The NCMS phosphors co-activated with Dy3+/Eu3+ ions exhibited a high energy transfer efficiency of up to 97.80%. The Dy3+-activated NCMS phosphor showed a color shift from yellow to red by varying the Eu3+ ion concentration, and also displayed excellent thermal stability. The Dy3+/Eu3+ co-doped NCMS phosphors have potential applications in lighting and display technologies due to their excellent thermal stability and flexible color tunability.
Article
Chemistry, Analytical
Samirkumar R. Bhelave, Abhijeet R. Kadam, Atul N. Yerpude, Sanjay J. Dhoble
Summary: This article investigates the impact of monovalent cation doping on the optical properties of rare earth (RE = Eu3+, Tb3+) co-doped Ca14Zn6Al10O35 synthesized through a low temperature combustion method. X-ray diffraction measurement confirms the crystalline phase of the Ca14Zn6Al10O35 phosphor. Under near-ultraviolet light excitation, Eu3+-doped Ca14Zn6Al10O35 displays Eu3+ emission bands with a maximum wavelength of approximately 470 nm, as well as peaks at 593 nm and 615 nm. Tb3+-doped Ca14Zn6Al10O35 exhibits a green emission band centered at 544 nm under near-ultraviolet range. Additionally, the energy transfer process in the Eu3+/Tb3+ pair and the enhancement in photoluminescence (PL) intensity with different charge compensation doping were studied. The obtained optimum PL emission intensity in a broad and intense visible spectral range could be significant for the fabrication of white light emitting diodes (WLEDs).
