Microwave sol-gel synthesis, microstructural and spectroscopic properties of scheelite-type ternary molybdate upconversion phosphor NaPbLa(MoO4)(3):Er3+/Yb3+ : научное издание | Научно-инновационный портал СФУ

Microwave sol-gel synthesis, microstructural and spectroscopic properties of scheelite-type ternary molybdate upconversion phosphor NaPbLa(MoO4)(3):Er3+/Yb3+ : научное издание

Год издания: 2020

Идентификатор DOI: 10.1016/j.jallcom.2019.152095

Ключевые слова: Chemical synthesis, Molybdate, Optical materials, Phosphors, Raman spectroscopy, X-ray diffraction

Аннотация: New ternary molybdate NaPbLa(1-x-y)(MoO4)(3):xEr(3+),yYb(3+) (x = y = 0, x = 0.05 and y = 0.35, 0.4, 0.45 and 0.5) phosphors were successfully fabricated by the MSG (microwave sol-gel) method, and the microstructural and spectroscopic properties were characterized. The crystal structure of NaPbLa(MoO4)(3) (NPLM) was defined by Rietveld analysis in space group I4(1)/a with unit cell parameters a = 5.3735(2) and c = 11.8668(4) angstrom, V = 342.65(3) angstrom(3), Z = 4 (R-B = 6.64%). The unit cell volume of NaPbLa(MoO4)(3) (NPLM) was intermediate between those of NaLa(MoO4)(2) and PbMoO4. Under the 980 nm excitation, upconverted yellowish-green emissions at transitions from H-2(11/2) and S-4(3/2) were observed. No concentration quenching in the subsystem of donor ions at the content up to 50 at.% and no cross-relaxation losses in the subsystem of acceptor ions at the concentrations as high as 5 at. % were verified. The individual chromaticity points for the NaPbLa(MoO4)(3):Er3+,Yb3+ phosphors, corresponding to the equal-energy point in the standard CIE diagram, revealed yellowish-green emissions. (C) 2019 Published by Elsevier B.V.

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Издание

Журнал: Journal of alloys and compounds

Выпуск журнала: Vol. 826

Номера страниц: 152095

ISSN журнала: 09258388

Место издания: Lausanne

Авторы

  • Lim Chang Sung (Hanseo Univ, Dept Aerosp Adv Mat & Chem Engn, Seosan 356706, South Korea)
  • Aleksandrovsky Aleksandr S. (Fed Res Ctr KSC SB RAS, Lab Coherent Opt, Kirensky Inst Phys, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Dept Photon & Laser Technol, Krasnoyarsk 660041, Russia)
  • Atuchin Victor V. (SB RAS, Lab Opt Mat & Struct, Inst Semicond Phys, Novosibirsk 630090, Russia; Tomsk State Univ, Funct Elect Lab, Tomsk 634050, Russia; Kemerovo State Univ, Res & Dev Dept, Kemerovo 650000, Russia)
  • Molokeev Maxim S. (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Lab Crystal Phys, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660041, Russia; Far Eastern State Transport Univ, Dept Phys, Khabarovsk 680021, Russia)
  • Oreshonkov Aleksandr S. (Siberian Fed Univ, Krasnoyarsk 660041, Russia; Fed Res Ctr KSC SB RAS, Lab Mol Spect, Kirensky Inst Phys, Krasnoyarsk 660036, Russia)

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