YAG:Dy - Based single white light emitting phosphor produced by solution combustion synthesis
YAG:Dy - Based single white light emitting phosphor produced by solution combustion synthesis
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DOI：
10.1016/j.jlumin.2016.11.017
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发表时间：
2017-03-01
影响因子：
3.6
通讯作者：
Rino, L.
中科院分区：
文献类型：
--
作者：
Carreira, J. F. C.;Ben Sedrine, N.;Rino, L.
以尿素和甘氨酸为燃料，采用溶液燃烧法合成了掺镝钇铝石榴石（YAG：Dy）荧光粉。通过X射线衍射（XRD）、拉曼光谱（RS）、光致发光（PL）和光致发光激发（PLE）研究了Dy掺杂浓度和退火温度对样品发光性能的影响。X射线衍射结果表明，样品为单相YAG，晶粒尺寸为45 ~ 82 nm。拉曼光谱证实了这些结果，并表明，在YAG晶格中引入Dy离子的结果在额外的拉曼模式。室温下的光致发光结果证实了引入的离子在主机晶格和其光学激活的所有Dy浓度。CIE 1931色坐标显示样品的发光位于近白色区。当Dy浓度为2mol%，退火温度为1400 ℃时，获得了最高的离子内发射强度。光致发光的激发结果表明，离子的发光优先被351.8和365.8nm波长的光子激发。(C)© 2016 Elsevier B. V.版权所有。
Dysprosium-doped yttrium aluminum garnet (YAG:Dy) phosphor was successfully produced by a Solution Combustion Synthesis (SCS) using a mixture of two fuels (urea and glycine). The effects of Dy concentration and annealing temperature were studied by X-ray diffraction (XRD), Raman spectroscopy (RS), photoluminescence (PL) and photoluminescence excitation (PLE). X-ray diffraction results show that the phosphors are single phase YAG with crystallite size ranging from 45 to 82 nm. Raman spectroscopy corroborates these results and show that the introduction of Dy ions in the YAG lattice results in additional Raman modes. Room temperature photoluminescence results confirm the introduction of the ion in the host lattice and its optical activation for all the Dy concentrations. CIE1931 color coordinates show that the samples' emission lays in the near white region. The highest intraionic emission intensity was achieved for a Dy concentration of 2 mol% and annealing temperature of 1400 degrees C. Photoluminescence excitation results show that the ions luminescence is preferential excited with 351.8 and 365.8 nm wavelength photons. (C) 2016 Elsevier B.V. All rights reserved.