Microwave synthesis and spectroscopic properties of ternary scheelite-type molybdate phosphors NaSrLa(MoO4)3:Er3+,Yb3+ | Научно-инновационный портал СФУ

Microwave synthesis and spectroscopic properties of ternary scheelite-type molybdate phosphors NaSrLa(MoO4)3:Er3+,Yb3+

Тип публикации: статья из журнала

Год издания: 2017

Идентификатор DOI: 10.1016/j.jallcom.2017.04.060

Ключевые слова: Crystal structure, Frequency up conversion, Microwave synthesis, Molybdate phosphor

Аннотация: Ternary scheelite-type molybdate NaSrLa(1-x-y)(MoO4)3:xEr3+,yYb3+ (x = y = 0, x = 0.1 and y = 0.2, x = 0.05 and y = 0.45, x = 0.2 and y = 0) phosphors were successfully synthesized by the microwave sol-gel method for the first time. Well-crystallized particles formed after the heat-treatment at 900 °C for 16 h showed a fine and homogeneous morphology with a particle size of 2–3 ?m. The crystal structures were refined by the Rietveld method in space group I41/a. The optical properties were examined comparatively using photoluminescence emission and Raman spectroscopy. Under the excitation at 980 nm, the NaSrLa0.7(MoO4)3:0.1Er3+,0.2Yb3+ and NaSrLa0.5(MoO4)3:0.05Er3+,0.45Yb3+ particles exhibited a strong 525-nm emission band, a weaker 550-nm emission band in the green region and weak 655-nm, 490-nm and 410-nm emission bands in the red, blue and violet regions. The pump power dependence and Commission Internationale de L'Eclairage chromaticity of the upconversion emission intensity were evaluated in detail. The presence of Sr in NaSrLa(MoO4)3, in comparison with NaCaLa(MoO4)3 compound, leads to frequency shift mainly in the low region of Raman spectra. The MoO4 bending vibrations are most susceptible to changes in the distance between the nearest oxygen atoms in the nearest neighboring MoO4 groups. © 2017 Elsevier B.V.

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Издание

Журнал: Journal of Alloys and Compounds

Выпуск журнала: Vol. 713

Номера страниц: 156-163

Авторы

  • Lim Chang Sung (Hanseo Univ, Dept Adv Mat Sci Engn, Seosan 356706, South Korea)
  • Aleksandrovsky Aleksandr S. (RAS, Kirensky Inst Phys, Lab Coherent Opt, Fed Res Ctr KSC SB, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Lab Nonlinear Opt & Spect, Krasnoyarsk 660041, Russia)
  • Molokeev Maxim S. (RAS, Kirensky Inst Phys, Lab Crystal Phys, Fed Res Ctr KSC SB, Krasnoyarsk 660036, Russia; Siberian State Univ, Inst Engn Phys & Radioelect, Krasnoyarsk 660074, Russia)
  • Oreshonkov Aleksandr S. (Far Eastern State Transport Univ, Dept Phys, Khabarovsk 680021, Russia; RAS, Kirensky Inst Phys, Lab Mol Spect, Fed Res Ctr KSC SB, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Dept Photon & Laser Technol, Krasnoyarsk 660079, Russia)
  • Atuchin Victor V. (SB RAS, Inst Semicond Phys, Lab Opt Mat & Struct, Novosibirsk 630090, Russia)

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