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Article
Materials Science, Ceramics
Ligan Ma et al.
Summary: Nowadays, multi-mode luminescent thermometry has emerged as a strongly promising noncontact temperature-sensing technique. In this study, three-mode optical thermometry techniques were successfully designed using thermochromic Gd2GaSbO7 (GGS):Bi3+,Eu3+ phosphors. The GGS:Bi3+,Eu3+ phosphors showed remarkable variation in emission color with temperature, and the fluorescence intensity ratio of Bi3+ and Eu3+ provided outstanding relative sensitivity and temperature uncertainty. These discoveries suggest that GGS:Bi3+,Eu3+ phosphors have great potential in multi-mode temperature detection and high temperature warning areas.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Zheng Lu et al.
Summary: A novel apatite-type SrMgY3(SiO4)(3)F phosphor was synthesized and doped with Ce3+ and Tb3+ ions to achieve blue and green light emission under UV excitation. The codoping of Ce3+ and Tb3+ ions effectively improved the green emission intensity and thermal stability. The luminescent color of the phosphor could be tuned from blue to green by adjusting the Tb3+ doping content.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Optics
Feng Du et al.
Summary: Efficient cyan phosphors, such as Ba5GeO4Br6: Bi3+, have been successfully prepared to address the cyan gap issue in the spectrum of white light-emitting diodes (WLEDs). The crystal structure, luminescent properties, and thermal quenching behavior of Ba5GeO4Br6: Bi3+ were studied, along with the valence state of Bi ions in the phosphor determined by XPS spectroscopy. Ba5GeO4Br6: Bi3+ showed strong absorption in the 250-400 nm range, resulting in a bright and broad cyan emission when excited by UV light. Furthermore, a full-spectrum WLED lamp with a high color rendering index (CRI) of 93.4 was achieved by coating Ba5GeO4Br6: Bi3+ phosphor, along with commercial BaMgAl10O17:Eu2+ and (Ca,Sr)AlSiN3:Eu2+ phosphors, on a 310 nm UV LED chip.
JOURNAL OF LUMINESCENCE
(2023)
Article
Optics
Yuxuan Luo et al.
Summary: YNbO4 (YNO):Bi3+,Ln3+ (Ln = Dy, Eu) phosphors were synthesized by high-temperature solid-phase reaction and their structural properties, optical characteristics, and energy transfer mechanisms were analyzed. The phosphors showed broad emission from Bi3+ ions and sharp peaks from Ln3+ ions, making them suitable for optical thermometry. The YNO:Bi3+,Ln3+ phosphors exhibited high sensitivity and superior thermochromic properties in temperature sensing, with maximum absolute sensitivities and relative sensitivities reaching significant values.
JOURNAL OF LUMINESCENCE
(2023)
Article
Optics
LianJie Li et al.
Summary: A series of Ca2MgWO6:yBi3+ samples with adjustable crystal lattice and enhanced emission intensity were successfully manufactured by high temperature solid-state method. The characteristics emission of the [WO6] group was explored, and Ca2MgWO6:yBi3+ phosphors exhibited ultra-wide emission bands under different excitations. Additionally, the phosphors showed high quantum efficiency and absorption efficiency, suggesting potential applications in solid-state lighting.
JOURNAL OF LUMINESCENCE
(2023)
Article
Chemistry, Multidisciplinary
J. Y. Chen et al.
Summary: Due to technological advancements, high-precision optical thermometers have gained significant attention from researchers. In this study, Ca3LiZnV3O12:Sm3+ phosphors with two luminescent centers were synthesized and extensively characterized for their structure, luminescent properties, and energy transfer. The thermochromic behavior of the phosphors was observed through different thermal responses in the emission and excitation spectra of VO43- and Sm3+. A four-mode luminescent thermometry based on fluorescence intensity, fluorescence intensity ratio, Commission Internationale de L'Eclairage coordinates, and excitation intensity ratio was designed, demonstrating excellent temperature sensitivity. The findings suggest that Ca3LiZnV3O12:Sm3+ could be a promising candidate for temperature monitoring applications.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Materials Science, Ceramics
Zhe Tang et al.
Summary: In this study, a multicolor-tunable Eu3+/Bi3+:Y2Zr2O7 transparent ceramic was successfully fabricated for the first time using vacuum sintering technology. The obtained samples showed bright, white light emission by combining green and red emissions, and also exhibited strong red and orange emissions under different excitation wavelengths. With excellent high temperature performance and mechanical properties, these ceramics have promising potential as white-light-emitting materials.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Weishuang Fang et al.
Summary: Orthorhombic and tetragonal phase CaLaGaO4 ceramics were synthesized using a conventional solid-state method in this study. The crystal structure and phase evolution were investigated, and it was found that different phases coexisted at certain sintering temperature ranges, leading to variations in microwave dielectric properties. Theoretical permittivity calculations based on specific equations provided insights into accurate estimation of properties in low-symmetry-structure ceramics.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Multidisciplinary
Hongzhi Zhang et al.
Summary: Realizing metal to metal charge transfer (MMCT) in Bi3+-doped phosphors is a new strategy to achieve efficient and tunable far-red luminescence. Na2Ca3(Nb, Ta)2O-9:Bi3+ exhibits intense absorption in near-ultraviolet region and no absorption in visible region, making it a promising material for plant growth light applications.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Xianli Wang et al.
Summary: In this study, the unexpected near-infrared emission of trivalent bismuth doped pyrochlore material was observed, and a dual-mode luminescence thermometry was demonstrated. The thermometry is based on the lifetime and luminescence intensity ratio of the near-infrared emission, providing high temperature sensitivity over a wide range.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Ceramics
Haotian Ma et al.
Summary: This study successfully synthesized a series of Sr3Al2O5Cl2:x%Bi3+ phosphors and explained their fluorescence behavior through a two-site-occupying emission mechanism. The study also found that the Sr1 site generated 490nm emission light and the Sr3 site generated 556nm emission light.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Inorganic & Nuclear
Peixin Gao et al.
Summary: Novel phosphors with tunable luminescence were achieved by chemical substitution strategy, enabling regulation from green to blue lights and from green to orange-red lights. The phosphors exhibited excellent thermal stability, and a full-visible spectrum pc-LED with high color-rendering index was obtained.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Physical
Wei Yan et al.
Summary: The crystal structure, photoluminescence properties, thermal stability, and corresponding mechanisms of novel Bi3+ and Eu3+-doped La2SrSc2O7 (LSS) phosphors are measured and analyzed in detail. The emission spectrum of LSS: 1.0%Bi3+ phosphor shows a novel green emission centered at 530 nm, which is attributed to the transition of Bi3+ ions. By designing Bi3+->Eu3+ energy transfer strategy, the luminescence colors of LSS: 1.0%Bi3+, yEu3+ (y = 0-5.0%) phosphors can be tuned from green to orange. The photoluminescence decay curves, lifetimes, energy transfer efficiency, and emission spectra prove the existence of energy transfer from Bi3+ to Eu3+. The prototype pc-WLED device with green-emitting LSS: 1.0%Bi3+ exhibits high color rendering index and low correlated color temperature. These results suggest that LSS: Bi3+ and LSS: 1.0%Bi3+, Eu3+ phosphors are promising candidates for pc-WLED applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
H. Yang et al.
Summary: A series of blue phosphors La1-xBixScO3 were synthesized, and their emission color can be tuned from deep blue to light blue by adjusting the doping concentration. The synthesized phosphors exhibited high quantum efficiency, high color purity, and excellent thermal stability. When combined with other phosphors, the white LEDs achieved high color rendering index and low correlated color temperature.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Chemistry, Physical
Shuai Wei et al.
Summary: This work presents a method to achieve white light emission by utilizing energy transfer between Bi3+ and Eu3+ ions. A novel Bi3+-activated phosphor, BYGO, was synthesized and Eu3+ was introduced to construct an energy transfer pathway. The emission color of BYGO:Bi3+,Eu3+ phosphors can be tuned by doping ratios. A single-component white light-emitting device with high color-rendering index was successfully prepared.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Inorganic & Nuclear
Tianqing Zhang et al.
Summary: In this study, a narrow-band blue phosphor BaZnAl10O17:Eu2+ with excellent emission performance was discovered, which is essential for developing high-performance LCDs. The synthesized phosphor exhibits low thermal quenching behavior, with only minimal loss in emission intensity at high temperatures. The prepared white LED device using this narrow-band blue-emitting phosphor emits high-brightness white light with a wide color gamut, showing its potential application value in white light-emitting diodes.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Inorganic & Nuclear
Shuang-Yin Zhu et al.
Summary: Bi3+/Eu3+ co-doped phosphors can achieve multi-color luminescence by adjusting the concentration ratio, allowing manual control of the emission color. The relative luminescence intensity of Bi3+ and Eu3+ can be modulated by changing their concentrations, enabling color tunable luminescence. A white light-emitting diode (WLED) lamp fabricated using this technology has excellent chromaticity and color rendering index.
DALTON TRANSACTIONS
(2022)
Article
Engineering, Environmental
Junpeng Xue et al.
Summary: The article discusses the preparation of LaNbO4:1.0%Bi3+/x%Ln(3+) (Ln = Eu, Tb, Dy, Sm) phosphors by solid-state reaction technology, which can emit both Bi3+ and Ln(3+) ions emissions, resulting in multi-color emissions. By taking advantage of the different thermal quenching properties between Bi3+ and Ln(3+) ions, the optical thermometric characteristics of the compounds were evaluated.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Inorganic & Nuclear
Runtian Kang et al.
Summary: The study focused on a new type of Ce3+/Mn2+ doped CYHAO garnet phosphor which can be efficiently excited by n-UV light, exhibiting a wide excitation band, tunable color emission, and high efficiency for producing white light LEDs.
INORGANIC CHEMISTRY FRONTIERS
(2021)
Article
Chemistry, Inorganic & Nuclear
Chuang Wang et al.
Summary: A novel red emission pyrophosphate phosphor Rb2Ba3(P2O7)(2):Eu3+ was successfully synthesized using a nonlinear optical material-inspired methodology, showing high quantum efficiency, color purity, and thermal stability. This phosphor exhibits excellent luminescence properties and stability against external factors, making it a potential candidate for multifunctional optical applications.
INORGANIC CHEMISTRY FRONTIERS
(2021)
Article
Engineering, Environmental
Junpeng Xue et al.
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Materials Science, Multidisciplinary
Langping Dong et al.
JOURNAL OF MATERIALS CHEMISTRY C
(2020)
Article
Chemistry, Inorganic & Nuclear
Ruiling Li et al.
INORGANIC CHEMISTRY FRONTIERS
(2020)
Review
Materials Science, Multidisciplinary
Baiqi Shao et al.
ADVANCED OPTICAL MATERIALS
(2019)
Article
Chemistry, Multidisciplinary
Ming Zhao et al.
ADVANCED MATERIALS
(2018)
Article
Materials Science, Multidisciplinary
Peipei Dang et al.
JOURNAL OF MATERIALS CHEMISTRY C
(2018)
Article
Chemistry, Physical
Chun Che Lin et al.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2016)
Article
Optics
Ilya E. Titkov et al.
LASER & PHOTONICS REVIEWS
(2016)
Article
Optics
Seung-Hyuk Lim et al.
LIGHT-SCIENCE & APPLICATIONS
(2016)
Review
Chemistry, Multidisciplinary
Guogang Li et al.
CHEMICAL SOCIETY REVIEWS
(2015)
Article
Materials Science, Multidisciplinary
Hongpeng Zhou et al.
JOURNAL OF MATERIALS CHEMISTRY C
(2015)
Article
Chemistry, Physical
Kristin A. Denault et al.
CHEMISTRY OF MATERIALS
(2014)
Article
Chemistry, Inorganic & Nuclear
Mengmeng Jiao et al.
INORGANIC CHEMISTRY
(2013)
Article
Materials Science, Multidisciplinary
Li-Li Wang et al.
JOURNAL OF MATERIALS CHEMISTRY C
(2013)
Article
Chemistry, Inorganic & Nuclear
Zhiguo Xia et al.
INORGANIC CHEMISTRY
(2011)
