Ionic occupation sites, luminescent spectra, energy transfer behaviors in Y3MgAl3SiO12: Ce3+, Mn2+ phosphors for warm white LED

Ionic occupation sites, luminescent spectra, energy transfer behaviors in Y3MgAl3SiO12: Ce3+, Mn2+ phosphors for warm white LED
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暖白光LED用Y3MgAl3SiO12:Ce3、Mn2荧光粉的离子占据位点、发光光谱、能量转移行为

DOI:
10.1016/j.jlumin.2019.116787
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发表时间:
2020
影响因子:
3.6
通讯作者:
Wang Huanping
Wang Huanping
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Tong Erbao(学);Song Kaixin;Deng Zhonghua;Shen Shaohua;Gao Huifang;Su Weitao;Wang Huanping

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摘要在5%H2 - 95%N2还原气氛中,采用高温固相反应法合成了Ce 3+和Mn 2+掺杂的Y3 MgAl 3SiO 12(YMAS)荧光粉。Rietveld精修的X射线衍射数据表明,0.0 8 Ce 3+-yMn 2+共掺杂的YMAS荧光粉具有石榴石型立方结构,空间群为Ia 3 π d。Ce 3+占据Y3+的晶格位置。Mn 2+占据MgO 6八面体和AlO 4四面体的两个晶格位置,分别发射中心波长为613 nm(Mn 2+(I))和723 nm(Mn 2+(II))的可见光。通过Ce 3+− Mn 2+的能量传递,获得了450 ~ 750 nm的橙黄光,最大能量传递效率为69.2%。集成的暖白色LED产生具有85.4的CRI、4502 K的CCT和CIE颜色坐标(0.3542,0.3269)的白色光。这表明该荧光粉可能适用于蓝光激发的白色LED。
Abstract The Ce 3+ and Mn 2+ doped Y 3 MgAl 3 SiO 12 (YMAS) phosphors were synthesized by the high-temperature solid-state reaction in 5% H 2–95% N 2 reduced atmosphere. Rietveld refinement of X-ray diffraction data indicated that 0.08 Ce 3+-yMn 2+ co-doped YMAS phosphors had a garnet type cubic structure with the Ia 3‾ d space group. Ce 3+ occupies the lattice sites of Y 3+. Mn 2+ occupies both lattice sites of MgO 6 octahedron and AlO 4 tetrahedron, emitting optical lights centered at 613 nm (Mn 2+(I)) and 723 nm (Mn 2+(II)), respectively. The orange-yellow light with the range of 450 nm–750nm was obtained by the energy transfer of Ce 3+− Mn 2+ with a maximum value of 69.2% of energy transfer efficiency. The integrated warm white LED produced white light with CRI of 85.4, CCT of 4502 K, and a CIE color coordinate (0.3542, 0.3269). It indicated that the phosphor might be suitable for blue light-excited white LEDs.
用于白光 LED 应用的新型单相全色发光 Ba9Lu2Si6O24: Ce3 /Mn2 /Tb3 荧光粉
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