Highly Regular, Uniform K3 ScF6 :Mn4+ Phosphors: Facile Synthesis, Microstructures, Photoluminescence Properties, and Application in Light-Emitting Diode Devices

ACS Applied Materials & Interfaces
Hong MingXinyu Ye

Abstract

A new generation of red phosphors of complex fluoride matrices activated with Mn4+ has gained a broad interest in getting high color quality and low color temperature of solid-state white light-emitting diodes (WLEDs). However, besides their instability toward moisture, the extremely irregular and nonuniform morphologies of these phosphors have limited their practical industry applications. In the present study, a novel type of K3ScF6:Mn4+ red phosphor with highly regular, uniform, and high color purity was obtained successfully through a facile coprecipitation route under mild conditions. The crystal structure was identified with aids of the powder X-ray diffraction, Rietveld refinement, and density functional theory calculations. The prototype crystallizes in the space group Fm3 m with a cubic structure, and the lattice parameters are fitted well to be a = b = c = 8.4859(8) Å and V = 611.074(2) Å3. The Mn4+ ions occupy Sc3+ sites and locate at the centers of the distorted ScF6 octahedrons. A wide band gap of approximately 6.15 eV can provide sufficient space to accommodate impurity energy levels. Unlike most other Mn4+ ion-activated fluoride phosphors, the as-prepared K3ScF6:Mn4+ phosphors demonstrate highly uniform and regul...Continue Reading

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Citations

Sep 4, 2018·Chemical Communications : Chem Comm·Lin HuangJing Wang
Sep 13, 2018·Dalton Transactions : an International Journal of Inorganic Chemistry·Hong MingHuaping Nie
Jan 5, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·Feng HongXiangting Dong
Jan 24, 2020·Dalton Transactions : an International Journal of Inorganic Chemistry·Quan DongShaohua Yang
Aug 12, 2020·Dalton Transactions : an International Journal of Inorganic Chemistry·Hong LiZhengliang Wang
May 28, 2021·Dalton Transactions : an International Journal of Inorganic Chemistry·Wendong NieXinyu Ye
Jun 3, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·José Miranda de CarvalhoHermi Felinto de Brito
Oct 28, 2019·Inorganic Chemistry·Junfei ZhangXinyu Ye
May 3, 2019·ACS Photonics·Dongling GengHernán Míguez
Nov 6, 2018·ACS Applied Materials & Interfaces·Junhao LiMingmei Wu
Apr 24, 2021·Biotechnology and Applied Biochemistry·Guobing WeiJing Zhang

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