Novel Sm3+-activated YCa4O(BO3)3 phosphors with high quantum efficiency and thermal stability for red-backlight display and indoor illumination

Article Optics

Molten-salt synthesis and spectral characteristics of perovskite KCa2Nb3O10:Sm3+ phosphors

Junzhi Che et al.

Summary: Novel layered niobate KCa2Nb3O10:Sm3+ orange red phosphors with potential application in white light-emitting diodes (w-LEDs) have been prepared successfully.

JOURNAL OF LUMINESCENCE (2022)

Add to Collection

Article Chemistry, Physical

Color tunable SrZrO3:Sm3+ nanopowders with satisfactory photoluminescent, band engineering properties for warm white LEDs and advanced forensic applications

K. C. Sushma et al.

Summary: In this study, color tunable samarium ions incorporated SrZrO3 nanopowders were successfully fabricated using a simple solution combustion technique with Aloe vera gel as fuel. The synthesized nanopowders were characterized by various analytical techniques, and their structural, optical, and photoluminescence properties were investigated. The results showed that the SrZrO3 nanopowders had an orthorhombic phase, a dumb-bell shaped morphology, and a particle size of around 30 nm. The photoluminescence emission of the samarium ions exhibited three prominent peaks at specific wavelengths. Furthermore, the SrZrO3 nanopowders showed excellent potential for detecting latent fingerprints on non-porous surfaces. The findings suggest that these prepared phosphors could be used as orange-red components in white light emitting diode applications and for advanced forensic applications.

JOURNAL OF MOLECULAR STRUCTURE (2022)

Add to Collection

Article Materials Science, Multidisciplinary

Synthesis, structural and luminescence investigations of novel Na3Bi5(PO4)6: Sm3+Eulytite phosphors for photonic applications

Zhenmin Liu et al.

Summary: In this study, a new red-orange phosphor Na3Bi5(PO4)(6): Sm3+ was successfully synthesized via high temperature solid-state reaction. The structure, luminescence, and thermal stability of the phosphor were investigated. The results showed that Na3Bi5(PO4)(6): Sm3+ exhibited good crystallinity and luminescence properties, making it suitable for developing white LEDs.

OPTICAL MATERIALS (2022)

Add to Collection

Article Nanoscience & Nanotechnology

Eu3+-Activated Alkali Rare-Earth Double-Tungstate Nanoparticles for Near-Ultraviolet-Light-Triggered Indoor Illumination

Zhuo Tang et al.

Summary: Phosphors for NUV-triggered white LEDs have attracted much attention in recent years. However, it remains challenging to achieve phosphors with high luminous intensity, superior color purity, and excellent thermal stability. In this study, a series of Eu3+-activated alkali rare-earth double-tungstate nanoparticles with high luminescence intensity were prepared using a facile hydrothermal reaction method. The prepared phosphors exhibited superior color purity and excellent thermal stability, and the emission intensity and color purity could be controlled by adjusting the concentration of Eu3+ ions. By utilizing these nanoparticles, a fabricated LED device emitted bright warm white light with a high CRI.

ACS APPLIED NANO MATERIALS (2022)

Add to Collection

Review Chemistry, Physical

Learning from Mineral Structures toward New Luminescence Materials for Light-Emitting Diode Applications

Xinquan Zhou et al.

Summary: Understanding the structure-property relationship of inorganic solids is crucial for predicting and designing functional materials, with a focus on new luminescence materials for LEDs applications. This review highlights important design principles including constructing new phases, modifying mineral structures, and tuning local structures to achieve unprecedented emissions. Future challenges and opportunities for mineral structure-related investigations in the development of new phosphor materials for LEDs applications are also discussed.

CHEMISTRY OF MATERIALS (2021)

Add to Collection

Article Optics

Thermally stable and highly efficient red-emitting Eu3+-doped Cs3GdGe3O9 phosphors for WLEDs: non-concentration quenching and negative thermal expansion

Peipei Dang et al.

Summary: The development of a highly efficient red-emitting phosphor, CEGO, with high color purity and excellent thermal stability shows great potential as a red component for pc-WLEDs, providing a new perspective for developing new phosphor materials.

LIGHT-SCIENCE & APPLICATIONS (2021)

Add to Collection

Article Materials Science, Ceramics

NUV-pumped luminescence of thermally stable samarium-activated alkali metal borophosphate phosphor

Zhenyu Fang et al.

Summary: This study reports a new Sm3+-activated KNBP powder phase with good photoluminescence performance and thermal stability under NUV irradiation. The powder phase is suitable for NUV-pumped warm white LEDs.

JOURNAL OF ADVANCED CERAMICS (2021)

Add to Collection

Article Chemistry, Inorganic & Nuclear

Wide range color tunability and efficient energy transfer of novel NaCaGd(WO4)3:Tb3+,Eu3+ phosphors with excellent thermal stability for pc-WLEDs

Jihuan Xie et al.

Summary: A series of NaCaGd(WO4)(3):Tb3+,Eu3+ phosphors were prepared using a high temperature solid state reaction method. These phosphors showed efficient energy transfer with an up to 92.267% energy transfer efficiency when the doping concentration of Eu3+ ions reached 0.4 mol. Adjusting the Tb3+/Eu3+ doping ratio can achieve color tunability from green to red. Additionally, the phosphors exhibited excellent thermal stability with the emission intensity maintaining about 84.7% at 423 K compared to the initial temperature of 303 K.

INORGANIC CHEMISTRY FRONTIERS (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

Review Chemistry, Multidisciplinary

Recent progress of zero-dimensional luminescent metal halides

Mingze Li et al.

Summary: This review summarizes the characteristics of zero-dimensional metal halides, including the classification of all-inorganic and organic-inorganic hybrid metal halides, and emphasizes the role of B-site cations in the photoluminescence process. It also discusses the self-trapped excitons model and photoluminescence regulation engineering to explore their unique photoluminescence properties and new application prospects.

CHEMICAL SOCIETY REVIEWS (2021)

Add to Collection

Article Crystallography