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 homogeneousПоказать полностьюmorphology 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