Synthesis, luminescent properties and theoretical calculations of novel orange-red-emitting Ca2Y8(SiO4)(6)O-2:Sm3+ phosphors for white light emitting diodes : научное издание
Библиографическое описание:Synthesis, luminescent properties and theoretical calculations of novel orange-red-emitting Ca2Y8(SiO4)(6)O-2:Sm3+ phosphors for white light emitting diodes : научное издание / C. Chen [et al.]. - Текст : непосредственный // Dyes and Pigments. - 2018. - Т. 150, № . - P. 121-129. - Cited Reference Count: 60. - Гранты: This research was supported by Minister of Science and Technology under contract no. MOST 105-2622-E-033-003-CC2 and MOST 104-2628-E-033-002-MY3. - Финансирующая организация: [MOST 105-2622-E-033-003-CC2]; [MOST 104-2628-E-033-002-MY3]. - ISSN 0143-7208. - ISSN 1873-3743, DOI 10.1016/j.dyepig.2017.10.047.
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.
Издательство:Elsevier Science Publishing Company, Inc.
Источник:Dyes and Pigments
Выпуск:Т. 150
Номера страниц:121-129
Держатель оригинала документа:Department of Chemical Engineering,Chung Yuan Christian University, Department of Physics,Far Eastern State Transport University, Laboratory of Crystal Physics,Kirensky Institute of Physics,Federal Research Center KSC SB RAS, National Chung Shan Institute of Science & Technology, Siberian Federal University
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