Сибирский федеральный университет

Тип публикации: статья из журнала

Год издания: 2016

Идентификатор DOI: 10.1039/c6dt02378a

Ключевые слова: Light emission, Optical properties, Phosphors, Sol-gel process, Sol-gels, Tungstate minerals, After-heat treatment, Crystallized particles, Homogeneous morphology, Photoluminescence emission, Spectroscopic property, Triple molybdates, Up-conversion emission, Upconversion phosphors, Optical emission spectroscopy

Аннотация: Triple molybdate NaCaLa(1-x-y)(MoO4)(3):xEr(3+)yYb(3+) (x = y = 0, x = 0.05 and y = 0.45, x = 0.1 and y = 0.2, x = 0.2 and y = 0) phosphors were successfully synthesized for the first time by the microwave sol-gel method. Well-crystallized particles formed after heat treatment at 900 degrees C for 16 h showed a fine and homogeneous morphology with particle sizes of 2-3 mu m. The structures were refined by the Rietveld method in the space group I4(1)/a. The optical properties were examined comparatively using photoluminescence emission and Raman spectroscopy. Under excitation at 980 nm, the NaCaLa0.7(MoO4)(3):0.1Er(3+),0.2Yb(3+) and NaCaLa0.5(MoO4)(3):0.05Er(3+),0.45Yb(3+) particles exhibited a strong 525 nm emission band, a weaker 550 nm emission band in the green region, and three 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.

Журнал: DALTON TRANSACTIONS

Выпуск журнала: Vol. 45, Is. 39

Номера страниц: 15541-15551

ISSN журнала: 14779226

Место издания: CAMBRIDGE

Издатель: ROYAL SOC CHEMISTRY

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