Synthesis, luminescent properties and theoretical calculations of novel orange-red-emitting Ca2Y8(SiO4)6O2:Sm3+ phosphors for white light-emitting diode : научное издание | Научно-инновационный портал СФУ

Synthesis, luminescent properties and theoretical calculations of novel orange-red-emitting Ca2Y8(SiO4)6O2:Sm3+ phosphors for white light-emitting diode : научное издание

Тип публикации: статья из журнала

Год издания: 2017

Идентификатор DOI: 10.1016/j.dyepig.2017.10.04

Ключевые слова: Ca2Y8(SiO4)6O2, Phosphor, Photoluminescence, Solid state reactio

Аннотация: The novel orange-red-emitting Ca2Y8(SiO4)6O2:Sm3+ phosphors (CYSO:Sm3+) were synthesized via conventional a solid state reaction. The crystal structure and atomic coordinates of CYSO:Sm3+ was characterized by Rietveld refinement. Luminesce properties of as-synthesized CYSO:Sm3+ phosphors are carried out by PL/PLE, decay life time, thermal quenching as well as reflectance spectrometer and LED fabrications. The results indicates that composition-optimized CYSO:1%Sm3+ exhibits orange-red emission peaks located on 564, 601, 608 and 648 nm attributed to the transitions of 4G5/2 → 6H5/2, 4G5/2 → 6H7/2, 4G5/2 → 6H7/2 and 4G5/2 → 6H9/2, respectively. The decay lifetime of CYSO:Sm3+ phosphors was in the range of 0.37–1.10 ms. The temperature-dependent photoluminescence is decreased to 80% from room temperature to 150 °C, which is superior to that of commercial red phsophpr-Y2O3:Eu3+. The results of LED fabrication by combing 405 chips and blue/green phosphors are demonstrated in this study. Finally, from viewpoint of theoretical calculations, band structure and density of state for CYSO and CYSO:Sm3+ are studied by first principles calculations. All the results indicate that CYSO:Sm3+ phosphors could be a potential material for white light-emitting diodes. © 2017 Elsevier Lt

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Издание

Журнал: Dyes and Pigment

Выпуск журнала: Vol. 150

Номера страниц: 121-129

Авторы

  • Chen C.-T. (Department of Chemical Engineering, Chung Yuan Christian University, Chung Li, Taiwan; National Chung Shan Institute of Science & Technology, Taoyuan, Taiwan)
  • Lin T.-J. (Department of Chemical Engineering, Chung Yuan Christian University, Chung Li, Taiwan)
  • Molokeev M.S. (Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation; Department of Physics, Far Eastern State Transport University, Khabarovsk, Russian Federation; Siberian Federal University, Krasnoyarsk, Russian Federation)
  • Liu W.-R (Department of Chemical Engineering, Chung Yuan Christian University, Chung Li, Taiwan)

Вхождение в базы данных

  • Scopus (цитирований 23)

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