Microwave-assisted synthesis and thermally stable red fluorescence of Ba3(ZnB5O10)PO4:Eu3+solid solution

Article Materials Science, Ceramics

Synthesis and spectroscopic analysis of Eu3+-doped tungsten bronze Sr5YTi3Nb7O30 phosphors for w-LED and visualization of latent fingerprint

Yingying Ma et al.

Summary: The novel Sr5YTi3Nb7O30:xEu(3+) red-emitting phosphors exhibit high color purity, good thermal stability, and are suitable for application in w-LEDs and latent fingerprint detection.

CERAMICS INTERNATIONAL (2022)

Add to Collection

Article Chemistry, Inorganic & Nuclear

Highly thermostable white-emitting Ca9ZnK(PO4)7:Ce3+,Dy3+ single-phase phosphor with tunable photoluminescence and energy transfer

Youkui Zheng et al.

Summary: This paper describes the development of a single-component white-emitting micro-sized powder with high thermal stability. The study investigates the fluorescence properties and thermal stability of the phosphor and successfully achieves a single-component white phosphor through spectral regulation.

DALTON TRANSACTIONS (2022)

Add to Collection

Article Chemistry, Applied

Photoluminescence emissions of Ca1_xWO4:xEu3+: Bridging between experiment and DFT calculations

Amanda Fernandes Gouveia et al.

Summary: This study discusses the impact of Eu3+ concentration on the photoluminescence emission of CaWO4. Ca1-xWO4:xEu3+ samples were synthesized using a coprecipitation method and microwave irradiation. The blue shift in absorption edge and the change in band gap energy confirm the effect of Eu3+ concentration. First-principles calculations were used to analyze the geometry and electronic properties, providing a more accurate comparison between theory and experiment.

JOURNAL OF RARE EARTHS (2022)

Add to Collection

Review Chemistry, Multidisciplinary

Evolutionary Generation of Phosphor Materials and Their Progress in Future Applications for Light-Emitting Diodes

Mu-Huai Fang et al.

Summary: This paper provides a comprehensive review of the development of phosphor materials in different generations, highlighting the key design mechanisms to meet the requirements of high-level LED applications. The demands for high brightness, high thermal stability, narrowband emission for high color gamut, and broadband emission for near-infrared are discussed. Future prospects for micro-LED applications and nanoluminescent materials are also provided.

CHEMICAL REVIEWS (2022)

Add to Collection

Article Chemistry, Physical

Probing the multifunctionality of double layered perovskite NaGdMgTeO6:Eu3+ in ratiometric phosphor thermometry and solid-state lighting

A. K. Sreelekshmi et al.

Summary: This study focuses on the synthesis and optical properties of NaGdMgTeO6: x% Eu3+ double layered perovskite phosphors, prepared using a conventional solid state ceramic route. The research reveals that the phosphors possess efficient excitation and red emission characteristics, making them suitable for solid state lighting. Additionally, the potential application of these phosphors in optical thermometry is explored.

JOURNAL OF ALLOYS AND COMPOUNDS (2022)

Add to Collection

Article Chemistry, Inorganic & Nuclear

Microwave assisted synthesis, photoluminescence and X-ray/gamma ray absoprtion properties of red CaZrO3:Eu3+ perovskite

S. Manjunatha et al.

Summary: Nanocrystalline orthorhombic CaZrO3:Eu3+ (1-4 mol%) perovskite was synthesized using microwave assisted combustion method, characterized for phase purity, surface morphology, and optical properties, showing potential for display applications. Additionally, X-ray/gamma radiation interaction parameters with CaZrO3:Eu3+ were studied for potential use in radiation protection, with the hypothesis that CaZrO3 might be a good X-ray/gamma ray absorber.

JOURNAL OF SOLID STATE CHEMISTRY (2022)

Add to Collection

Article Materials Science, Ceramics

Color-tunable emissions in Bi3+/Eu3+ activated phosphors for multi-mode optical thermometers

Hui Zhang et al.

Summary: This article introduces a method of temperature measurement using Ca3Y2Ge3O12:Bi3+/Eu3+ luminescent materials. A series of these luminescent materials were manufactured, and their luminescence mechanism and temperature dependence were investigated through emission spectroscopy and decay lifetime characterization. The results showed that these luminescent materials have high sensitivity and excellent signal resolution, making them suitable for various temperature measurement systems.

CERAMICS INTERNATIONAL (2022)

Add to Collection

Article Chemistry, Physical

Ba3(ZnB5O10)PO4:Tb3+ green phosphor: Microwave-assisted sintering and stable

Youkui Zheng et al.

Summary: This paper reports the synthesis of trivalent terbium-activated green phosphors and comprehensively investigates their structure, photoluminescence behavior, and colorimetric properties. The results show that the phosphors exhibit high emission intensity, low chromaticity shifting, and robust thermostability and color stability, making them promising candidates for illumination and display applications.

JOURNAL OF ALLOYS AND COMPOUNDS (2022)

Add to Collection

Article Optics

Ratiometric temperature sensing and molecular logic AND gate execution via Eu3+ doped BaWO4 nanophosphor

Karamjyoti Panigrahi et al.

Summary: In this study, Eu3+ doped BaWO4 was successfully prepared via hydrothermal route, and the thermally coupled energy levels (TCEL) D-5(1) and D-5(0) of Eu3+ were utilized for designing a ratiometric temperature sensor in the range of 80-500 K. The intense down-shifting luminescence and high temperature sensitivity resulted in small temperature uncertainty (0.05 K) and low absolute error (-0.12 to 0.14 K).

JOURNAL OF LUMINESCENCE (2022)

Add to Collection

Article Chemistry, Physical

Optimization of Eu3+-to-Host Emission Ratio in Double-Perovskite Molybdenites for Highly Sensitive Temperature Sensors

Bartosz Bondzior et al.

Summary: Double-perovskite phosphors with unusual thermal and luminescent behavior show great potential as efficient and sensitive luminescent temperature sensors. In this study, the correlations between symmetry, energetic structure, luminescence, and thermometric performance of four double perovskite hosts were investigated. The results revealed that the quantum yield of Eu3+ emission is influenced by the cubic symmetry of the hosts and can reach over 20% for Ba2MgMoO6. Excitation of Eu3+ ions occurs indirectly through host absorption bands and charge transfer band. The symmetry of the host plays a crucial role in the thermal stability of the host emission and, combined with varying activation energy of Eu3+ luminescence, provides a basis for optimizing thermometric sensitivity. The relative sensitivities obtained for the Eu-doped molybdenite hosts are 3.2% at 75? for Sr2MgMoO6 and 9.2% at -196 ? for Ba2MgMoO6. It is also demonstrated that the sensing performance is higher in hosts with a uniform quenching profile of host luminescence and steep quenching of Eu3+ luminescence.

JOURNAL OF PHYSICAL CHEMISTRY C (2022)

Add to Collection

Article Chemistry, Inorganic & Nuclear

Microwave-assisted synthesis to prepare metal-organic framework for luminescence thermometry

Alia Mansar et al.

Summary: In this study, a lanthanide metal-organic framework was synthesized for the first time under microwave-assisted hydrothermal conditions. The substitution of La3+ by Eu3+ and Tb3+ was investigated, and the materials exhibited thermometric properties when codoped by Eu3+ and Tb3+.

JOURNAL OF SOLID STATE CHEMISTRY (2022)

Add to Collection

Article Chemistry, Analytical

Wet chemical synthesis of BiPO4:Eu3+ phosphor for w-LED application

Chandrahasya M. Nandanwar et al.

Summary: The synthesis of BiPO4:Eu3+ phosphors was successfully achieved using a wet chemical process. X-ray diffraction patterns confirmed good matching between the prepared samples and the standard BiPO4 structure. The highest excitation intensity was observed at 395 nm, leading to characteristic emission peaks at 592 nm and 616 nm. Concentration quenching occurred at a Eu3+ ion concentration of 0.5 mol%. The particles had a micrometre size range. The prepared phosphor shows potential for use in white light-emitting diodes.

LUMINESCENCE (2022)

Add to Collection

Article Chemistry, Physical

Exploring a new Dy3+-activated borotellurate phosphor with thermally stable photoluminescence

Yuefei Xiang et al.

Summary: A novel yellow-emitting phosphor activated by trivalent dysprosium (Dy3+) ions was successfully synthesized and characterized. The phosphor exhibited blue and yellow emissions under near-ultraviolet excitation, with an optimal doping concentration of 7 mol%. It demonstrated good thermal stability and resistance to color shifting, making it a promising candidate for application in NUV-irradiated white light-emitting diodes.

JOURNAL OF ALLOYS AND COMPOUNDS (2022)

Add to Collection

Article Chemistry, Inorganic & Nuclear

Stable and efficient narrow-band red emitters with high colour purity for white LEDs and plant growth applications

Kasturi Singh et al.

Summary: In this study, a series of red-emitting phosphors with a stratified scheelite structure were synthesized and their optical properties were systematically investigated. The phosphors exhibited narrow-band red emission, high color purity, and excellent quantum efficiency and thermal stability, making them suitable for solid-state lighting devices and plant growth applications.

DALTON TRANSACTIONS (2022)

Add to Collection

Article Chemistry, Multidisciplinary

Preparation and wide band emission characteristics of Eu2+/Eu3+ co-doped Ba3P4O13 phosphors

Wenke Ruan et al.

Summary: A series of Ba3P4O13:xEu(2+/3+) phosphors were synthesized at a relatively low temperature in a CO reduction atmosphere, and their crystallization and optical properties were studied. The results show that the emission color of the phosphor can be adjusted by changing the Eu ion doping concentration, making it a potential white light-emitting material.

RSC ADVANCES (2022)

Add to Collection

Review Materials Science, Ceramics

Rare earth (RE) doped phosphors and their emerging applications: A review

Isha Gupta et al.

Summary: The rapid advancement in the research and development of luminescent materials, particularly inorganic phosphors, has shown great potential in energy efficiency and eco-friendliness, making them more widely used in replacing traditional lighting sources. Rare-earth activated phosphors play a crucial role in solid-state lighting technologies, and studying the design of novel phosphors will contribute to future applications.

CERAMICS INTERNATIONAL (2021)

Add to Collection

Article Chemistry, Physical

Energy transfer study in GdVO4: Bi3+, Yb3+ obtained by microwave-assisted hydrothermal method

Katarzyna Lenczewska et al.

Summary: The influence of Bi3+ and Yb3+ ion co-doping on the structure, morphology, and luminescence properties of GdVO4 was investigated in this study. The obtained results show that this material has potential applications as a phosphor in luminescent concentrators for solar cells, which can enhance the efficiency of silicon-based solar cells.

JOURNAL OF ALLOYS AND COMPOUNDS (2021)

Add to Collection

Article Chemistry, Physical

Amorphous Nickel-Iron Borophosphate for a Robust and Efficient Oxygen Evolution Reaction

Jiseok Kwon et al.

Summary: Borophosphate materials show promise as electrocatalysts for water splitting, with the ability to self-adjust electronic structure and composition. The amorphization of LiNiFe borophosphate enhances oxygen evolution reaction (OER) efficiency by promoting facile adsorption of oxygen intermediates and modifying the metal-oxygen bond contraction, leading to excellent OER properties with high long-term stability.

ADVANCED ENERGY MATERIALS (2021)

Add to Collection

Article Optics

Energy efficient microwave-assisted preparation of deep red/near-infrared emitting lithium aluminate and gallate phosphors

Jiaren Du et al.

Summary: The study utilized a facile MASS method to prepare transition metal doped lithium aluminates and gallates phosphors, achieving deep-red or near-infrared emission with persistent luminescence characteristics demonstrated by temperature dependency. This method could enable a wider use of MASS and exploration of new luminescence properties involving defects.

JOURNAL OF LUMINESCENCE (2021)

Add to Collection

Article Materials Science, Multidisciplinary

LaMoBO6:Tb3+,Eu3+/Sm3+,Bi3+ yellow phosphors with exceptionally high quantum yields that can be excited by blue light

Shuai Yang et al.

Summary: LEDs are dominant in the lighting industry, and improving the quantum yield of phosphors is crucial for energy efficiency. Researchers have synthesized high quantum yield green and yellow phosphors, which have been successfully applied to white LED technology.

JOURNAL OF MATERIALS CHEMISTRY C (2021)

Add to Collection

Article Engineering, Electrical & Electronic

High Quantum Yield Gd4.67Si3O13:Eu3+ Red-Emitting Phosphor for Tunable White Light-Emitting Devices Driven by UV or Blue LED

Wanggui Ye et al.

Summary: Eu3+-activated Gd4.67Si3O13 rare-earth silicate phosphor has been developed with high photoluminescence quantum yields exceeding 80%, comparable to commercial rare-earth nitride red phosphors. This phosphor can be excited by near-ultraviolet or blue light and emits red light at a dominant wavelength of 615 nm, making it suitable for warm white LED applications. Additionally, it exhibits good thermal cycling stability and has potential applications in optical temperature measurement systems with a maximum relative sensitivity of 1.05 x 10(-2) K-1 at 456 K.

ACS APPLIED ELECTRONIC MATERIALS (2021)

Add to Collection

Article Materials Science, Ceramics