High-performance ultra-narrow-band green-emitting phosphor LaMgAl11O19:Mn2+ for wide color-gamut WLED backlight displays

Wu, Zhangyue; Li, Chao; Zhang, Feng; Huang, Shixiang; Wang, Feijiu; Wang, Xiaoming; Jiang, Huan

doi:10.1039/d2tc00850e

Cited by 62 publications

(28 citation statements)

References 35 publications

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“…Due to particular biological activity, crown ether’s derivate and N -containing heterocyclic chemicals and their derivatives have been widely employed in agronomy and medicine [ 18 ]. Similar organic chemicals are of interest in pharmacology as effective tissue oxygenators and antidepressants, as well as in biotechnology; these compounds are employed for macromolecule binding [ 19 , 20 , 21 , 22 , 23 ]. N -containing heterocyclic compounds and macrocycle derivative crown ethers have remarkable photochemical, catalytic, and luminescent capabilities, indicating that they might be used to diagnose and cure various ailments.…”

Section: Introductionmentioning

confidence: 99%

Fluorescent and Phosphorescent Nitrogen-Containing Heterocycles and Crown Ethers: Biological and Pharmaceutical Applications

Ullah

Khan

et al. 2022

Molecules

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Fluorescent molecules absorb photons of specific wavelengths and emit a longer wavelength photon within nanoseconds. Recently, fluorescent materials have been widely used in the life and material sciences. Fluorescently labelled heterocyclic compounds are useful in bioanalytical applications, including in vivo imaging, high throughput screening, diagnostics, and light-emitting diodes. These compounds have various therapeutic properties, including antifungal, antitumor, antimalarial, anti-inflammatory, and analgesic activities. Different neutral fluorescent markers containing nitrogen heterocycles (quinolones, azafluoranthenes, pyrazoloquinolines, etc.) have several electrochemical, biological, and nonlinear optic applications. Photodynamic therapy (PDT), which destroys tumors and keeps normal tissues safe, works in the presence of molecular oxygen with light and a photosensitizing drugs (dye) to obtain a therapeutic effect. These compounds can potentially be effective templates for producing devices used in biological research. Blending crown compounds with fluorescent residues to create sensors has been frequently investigated. Florescent heterocyclic compounds (crown ether) increase metal solubility in non-aqueous fluids, broadening the application window. Fluorescent supramolecular polymers have widespread use in fluorescent materials, fluorescence probing, data storage, bio-imaging, drug administration, reproduction, biocatalysis, and cancer treatment. The employment of fluorophores, including organic chromophores and crown ethers, which have high selectivity, sensitivity, and stability constants, opens up new avenues for research. Fluorescent organic compounds are gaining importance in the biological world daily because of their diverse functionality with remarkable structural features and positive properties in the fields of medicine, photochemistry, and spectroscopy.

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Section: Introductionmentioning

confidence: 99%

Fluorescent and Phosphorescent Nitrogen-Containing Heterocycles and Crown Ethers: Biological and Pharmaceutical Applications

Ullah

Khan

et al. 2022

Molecules

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“…Single-particle PL is another effective tool for the characterization of the charge transfer process in plasmonic photocatalysis . In principle, the recombination of hot carriers generated from interband and intraband transitions will lead to PL emissions. − The changes in PL intensity thus can be used to monitor the charge transfer process. Lou et al observed a reduced dipole LSPR PL (at ∼1.8 eV) intensity of Au triangular nanoprisms after Pt surface modification (Figure e) .…”

Section: Preparation and Characterization Of Active Site-engineered P...mentioning

confidence: 99%

Active Site Engineering on Plasmonic Nanostructures for Efficient Photocatalysis

et al. 2023

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Plasmonic nanostructures have shown immense potential in photocatalysis because of their distinct photochemical properties associated with tunable photoresponses and strong light−matter interactions. The introduction of highly active sites is essential to fully exploit the potential of plasmonic nanostructures in photocatalysis, considering the inferior intrinsic activities of typical plasmonic metals. This review focuses on active site-engineered plasmonic nanostructures with enhanced photocatalytic performance, wherein the active sites are classified into four types (i.e., metallic sites, defect sites, ligand-grafted sites, and interface sites). The synergy between active sites and plasmonic nanostructures in photocatalysis is discussed in detail after briefly introducing the material synthesis and characterization methods. Active sites can promote the coupling of solar energy harvested by plasmonic metal to catalytic reactions in the form of local electromagnetic fields, hot carriers, and photothermal heating. Moreover, efficient energy coupling potentially regulates the reaction pathway by facilitating the excited state formation of reactants, changing the status of active sites, and creating additional active sites using photoexcited plasmonic metals. Afterward, the application of active site-engineered plasmonic nanostructures in emerging photocatalytic reactions is summarized. Finally, a summary and perspective of the existing challenges and future opportunities are presented. This review aims to deliver some insights into plasmonic photocatalysis from the perspective of active sites, expediting the discovery of high-performance plasmonic photocatalysts.

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“…Presently, the research on narrow-band green emitters for backlight display mainly includes quantum dots, Mn 2+ activated phosphors, and Eu 2+ activated phosphors . Due to the disadvantages of toxicity, poor thermal stability, and high price, quantum dots currently cannot be commercialized on a large scale. − The long decay time of the Mn 2+ -activated narrow-band green phosphors results in a trailing ghost signal, which limits its commercial application. , Moreover, the disadvantages of instability and difficult synthesis exist in sulfide phosphors and nitride phosphors, respectively. , As a result, Eu 2+ -activated oxide phosphors have great advantages in the research of narrow-band green phosphors because of their short decay time, easy synthesis, relative stabilization, and low cost. Therefore, there is an urgent need to explore Eu 2+ -doped narrow-band green oxide phosphors capable of realizing a wide color gamut.…”

Section: Introductionmentioning

confidence: 99%

Accurately Controlling the Occupation of Eu²⁺ in Cs(K, Na)₃(Li₃SiO₄)₄ to Achieve Narrow-Band Green Emission for Wide Color Gamut Displays

Liao

Wang

et al. 2022

ACS Appl. Mater. Interfaces

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The development of narrow-band phosphors for wide color gamut displays in multimodal phosphors through selective site occupancy engineering is an important challenge. In this work, by replacing Na ions with K ions in the cyan-green double-band emitting phosphor CsK 0.9 Na 2 (Li 3 SiO 4 ) 4 : 10%Eu 2+ , the occupation of Eu 2+ in Cs(K, Na) 3 (Li 3 SiO 4 ) 4 was accurately controlled from occupying three sites of Cs, K1, and Na to occupying only one site of K2/Na. The obtained phosphor CsK 1.9 Na(Li 3 SiO 4 ) 4 : 10%Eu 2+ exhibits a single narrow-band green emission at 531 nm (the full width at half-maximum of 46 nm) with excellent thermal stability of luminescence from 80 to 523 K (96.3% @423 K of the intensity of integrated emission at room temperature and 94.9% @300 K of the intensity of integrated emission at 80 K). The white light-emitting diode (wLED) that was fabricated by combining a blue LED chip with this narrow-band green phosphor and red phosphor K 2 SiF 6 : Mn 4+ presents a satisfactory wide color gamut of 128.1% of the National Television Standards Committee, which demonstrates the important application value of the phosphor in the wide color gamut displays field. This work provides an effective design strategy for exploring narrow-band phosphors through selective site occupancy engineering, which will facilitate the exploration of relevant narrow-band emitters in the future.

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High-performance ultra-narrow-band green-emitting phosphor LaMgAl₁₁O₁₉:Mn²⁺ for wide color-gamut WLED backlight displays

Abstract: Explorations of narrow-band green-emitting phosphors have attracted much attention due to their great application potentials in wide color-gamut wLEDs backlight display. Herein, a high-performance narrow-band green-emitting phosphor LaMg0.72Al11O19:0.28Mn2+ (LMAO:0.28Mn2+) was...

Cited by 62 publications

References 35 publications

Fluorescent and Phosphorescent Nitrogen-Containing Heterocycles and Crown Ethers: Biological and Pharmaceutical Applications

Fluorescent and Phosphorescent Nitrogen-Containing Heterocycles and Crown Ethers: Biological and Pharmaceutical Applications

Active Site Engineering on Plasmonic Nanostructures for Efficient Photocatalysis

Accurately Controlling the Occupation of Eu²⁺ in Cs(K, Na)₃(Li₃SiO₄)₄ to Achieve Narrow-Band Green Emission for Wide Color Gamut Displays

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High-performance ultra-narrow-band green-emitting phosphor LaMgAl11O19:Mn2+ for wide color-gamut WLED backlight displays

Abstract: Explorations of narrow-band green-emitting phosphors have attracted much attention due to their great application potentials in wide color-gamut wLEDs backlight display. Herein, a high-performance narrow-band green-emitting phosphor LaMg0.72Al11O19:0.28Mn2+ (LMAO:0.28Mn2+) was...

Cited by 62 publications

References 35 publications

Fluorescent and Phosphorescent Nitrogen-Containing Heterocycles and Crown Ethers: Biological and Pharmaceutical Applications

Fluorescent and Phosphorescent Nitrogen-Containing Heterocycles and Crown Ethers: Biological and Pharmaceutical Applications

Active Site Engineering on Plasmonic Nanostructures for Efficient Photocatalysis

Accurately Controlling the Occupation of Eu2+ in Cs(K, Na)3(Li3SiO4)4 to Achieve Narrow-Band Green Emission for Wide Color Gamut Displays

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High-performance ultra-narrow-band green-emitting phosphor LaMgAl₁₁O₁₉:Mn²⁺ for wide color-gamut WLED backlight displays

Accurately Controlling the Occupation of Eu²⁺ in Cs(K, Na)₃(Li₃SiO₄)₄ to Achieve Narrow-Band Green Emission for Wide Color Gamut Displays