title: Co-precipitation synthesis and luminescence properties of K₂TiF₆:Mn⁴⁺ red phosphors for warm white light-emitting diodes.
abstract: K2TiF6:Mn(4+) red phosphors with different Mn(4+) doping concentrations were obtained using the co-precipitation method. X-Ray diffraction, scanning electron microscopy, Raman spectra, Fourier transform infrared spectroscopy, photoluminescence excitation and emission spectra and decay curves were used to characterize the properties of K2TiF6:Mn(4+) phosphors. Under excitation at 470 nm, an intense red emission peak around 631 nm corresponding to the (2)E(g)-(4)A2 transition of Mn(4+) was observed for 2.48 mol% K2TiF6:Mn(4+) phosphors and was used as the optimum doping concentration. The excellent luminescent properties of K2TiF6:Mn(4+) suggest that this material might be a promising red phosphor for generating warm white light in phosphor-converted white light-emitting diodes.
authors.affiliation: School of Metallurgy and Chemistry Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi, 341000, China.
authors.forename: Jinsheng
authors.initials: J
authors.lastname: Liao
authors.affiliation: School of Metallurgy and Chemistry Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi, 341000, China.
authors.forename: Liling
authors.initials: L
authors.lastname: Nie
authors.affiliation: School of Metallurgy and Chemistry Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi, 341000, China.
authors.forename: Laifu
authors.initials: L
authors.lastname: Zhong
authors.affiliation: School of Metallurgy and Chemistry Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi, 341000, China.
authors.forename: Qingjie
authors.initials: Q
authors.lastname: Gu
authors.affiliation: School of Metallurgy and Chemistry Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi, 341000, China.
authors.forename: Qi
authors.initials: Q
authors.lastname: Wang
mesh_terms: D011232:Chemical Precipitation; D005461:Fluorine / Q000737:chemistry*; D008029:Lighting; D049449:Luminescence; D008345:Manganese / Q000737:chemistry*; D011188:Potassium / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry*
chemical_list: D005461:Fluorine; D008345:Manganese; D014025:Titanium; D011188:Potassium
keywords: XRD; co-precipitation; phosphor; photoluminescence