Articles with "mn4" as a keyword



Toward Controllable Self‐Reduction of Mn4+ to Mn2+ by Lanthanide Ions for Luminescence Based Colorimetric Sensing of Temperature

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Published in 2024 at "Advanced Optical Materials"

DOI: 10.1002/adom.202402020

Abstract: Luminescence intensity ratio (LIR) based optical thermometers have attracted lots of attention. In case of color tunable luminescence with the variation of LIR, “RGB colorimetry” based on convenient temperature sensing using a smartphone or digital… read more here.

Keywords: temperature; self reduction; mn2; mn4 ... See more keywords

Enhancing Hydrophobicity in Mn4+‐Doped Organometallic Fluoride with High Quantum Efficiency through the Utilization of Trimethylsulfoxide Cation

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Published in 2024 at "Advanced Optical Materials"

DOI: 10.1002/adom.202402249

Abstract: Mn4+‐doped red fluoride phosphors are crucial in white light illumination and display technologies due to their broad color gamut, high color purity, and cost‐effective production. This study introduces a novel Mn4+‐doped trimethylsulfoxonium hexafluorotitanate ((TMSO)2TiF6) organometallic… read more here.

Keywords: color; mn4; enhancing hydrophobicity; hydrophobicity mn4 ... See more keywords
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Double-perovskite Ca2AlNbO6: Mn4+ red phosphor for white light emitting diodes: synthesis, structure and luminescence properties

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Published in 2019 at "Journal of Materials Science: Materials in Electronics"

DOI: 10.1007/s10854-019-01328-7

Abstract: The red-emitting phosphors Ca2AlNbO6: xmol%Mn4+ (CAN: xmol%Mn4+) (0.1 ≤ x ≤ 0.9) were successfully synthesized via a conventional high temperature solid-state method at air atmosphere. A band was located at 320 nm in diffuse reflection spectra (DRS) because of the… read more here.

Keywords: double perovskite; mn4; mol mn4; light emitting ... See more keywords
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The photoluminescence adjustment of red phosphors ANaWO2F4:Mn4+ (A = Li, Na, K) by suitable tolerance factor designing

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Published in 2020 at "Journal of Materials Science: Materials in Electronics"

DOI: 10.1007/s10854-020-03004-7

Abstract: Mn4+-activated perovskite-structured ANaWO2F4 (A = Li, Na, K) red phosphors were successfully prepared by a facile co-precipitation method. By changing the A-site ions, the tolerance factor (t) of host material ANaWO2F4 became adjustable. Red emissions… read more here.

Keywords: mn4; photoluminescence; red phosphors; tolerance factor ... See more keywords

Far-red emitting Mg2La3NbO9:Mn4+ powder phosphor: Synthesis and luminescence properties

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Published in 2020 at "Advanced Powder Technology"

DOI: 10.1016/j.apt.2020.08.009

Abstract: Abstract Novel Mg2La3NbO9:Mn4+ powder phosphors are successfully synthesized by the high-temperature solid-state reaction method under ambient air. The crystal structure, morphology, decay lifetimes, time-resolved emission spectra, and luminescence properties are investigated. The excitation spectrum of… read more here.

Keywords: mn4; mg2la3nbo9 mn4; powder; mn4 phosphor ... See more keywords

Highly thermal-sensitive robust LaTiSbO6:Mn4+ with a single-band emission and its topological architecture for single/dual-mode optical thermometry

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Published in 2020 at "Chemical Engineering Journal"

DOI: 10.1016/j.cej.2019.123272

Abstract: Abstract Increasingly rigorous temperature detection applied to characterize physico-chemical state has stimulated thriving demands for contactless optical thermometry, which must overcome obstacles of complex preparation, low sensitivity, poor stability and inflexible design. Herein, a new… read more here.

Keywords: thermal sensitive; mode; optical thermometry; mn4 ... See more keywords

Luminescent properties of Zn2+-doped CaAl12O19:Mn4+ deep-red phosphor for indoor plant cultivation

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Published in 2019 at "Ceramics International"

DOI: 10.1016/j.ceramint.2019.01.132

Abstract: Abstract A series of CaAl12O19: 0.5%Mn4+ phosphors doped with different concentrations of Zn2+ were prepared via solid state reaction process. The micrographs and phases of powders were analyzed by field emission scanning electron microscopy (FESEM)… read more here.

Keywords: emission; deep red; indoor plant; caal12o19 mn4 ... See more keywords
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A facile in situ surface-coating passivation strategy for improving the moisture resistance of Mn4+-activated fluoride red phosphor

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Published in 2020 at "Ceramics International"

DOI: 10.1016/j.ceramint.2020.05.044

Abstract: Abstract Mn4+-activated fluorides have become a research hotspot in the community of inorganic red phosphors owing to their fascinating luminescent properties. However, the poor water resistance of these materials severely hinders their application in the… read more here.

Keywords: mn4 activated; surface; red phosphor; mn4 ... See more keywords

Structure analysis, tuning photoluminescence and enhancing thermal stability on Mn4+-doped La2-xYxMgTiO6 red phosphor for agricultural lighting

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Published in 2020 at "Ceramics International"

DOI: 10.1016/j.ceramint.2020.05.095

Abstract: Abstract Currently, phosphor-converted LEDs (pc-LEDs) are revolutionizing the industry of plant growth lighting. To meet the requirements of this technology, phosphors with tunable photoluminescence, high thermal stability and luminous intensity are required. Herein, we found… read more here.

Keywords: mn4; photoluminescence; la2 xyxmgtio6; thermal stability ... See more keywords
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Enhanced luminescence and energy transfer performance of double perovskite structure Gd2MgTiO6:Bi3+, Mn4+ phosphor for indoor plant growth LED lighting

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Published in 2021 at "Ceramics International"

DOI: 10.1016/j.ceramint.2021.02.230

Abstract: Abstract Deep-red light emitting phosphors are widely used in LEDs for indoor plant growth because of the critical role played by red light in plant growth. The luminescence properties of deep-red phosphors are still not… read more here.

Keywords: bi3; energy transfer; luminescence; bi3 mn4 ... See more keywords

Novel non-rare-earth red-emitting phosphor Li4AlSbO6:Mn4+ for plant growth: Crystal structure, luminescence properties and its LED device

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Published in 2021 at "Ceramics International"

DOI: 10.1016/j.ceramint.2021.06.185

Abstract: Abstract Bright red emission of Mn4+ ions was obtained in a novel non-rare-earth host of Li4AlSbO6. Luminescence properties as well as crystal structure and particle morphology of Li4AlSbO6:Mn4+ phosphors were studied. The phosphors can effectively… read more here.

Keywords: novel non; phosphor; li4alsbo6 mn4; mn4 ... See more keywords