Clarifying the effect of local structure of Ce3+ and Eu3+ on photoluminescence of YAG:Ce,Eu nanophosphors
Clarifying the effect of local structure of Ce3+ and Eu3+ on photoluminescence of YAG:Ce,Eu nanophosphors
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阐明Ce3和Eu3的局域结构对YAG:Ce,Eu纳米荧光粉光致发光的影响
DOI:
10.1016/j.jallcom.2020.153671
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发表时间:
2020-05
影响因子:
6.2
通讯作者:
Ronghai Yu
中科院分区:
文献类型:
--
作者:
Xiaowu He;Yanbiao Ren;Caixia Hu;Ben Ma;Hao Chen;Shushan Huang;Hongyue Hao;Tongtong Qi;Xiaofang Liu;Ronghai Yu
A modified sol-gel method was applied in producing Ce3+- and Eu3+- codoped yttrium aluminum garnet (YAG:Ce,Eu) phosphors. Multiple related techniques were utilized to examine the minute correlation between fine structure and photoluminescence (PL) in Ce3+,Eu3+- codoped YAG phosphors in detail. It shows that the Ce3+or Eu3+replacement of Y3+can slightly enlarge the YAG lattice and cause the fine variation of local crystal structure. Ce3+,Eu3+- codoped YAG phosphors exhibit several sharp and narrow5D0→7FJ(J= 0 ─ 4) red emissions of Eu3+and broad 5d1→ 4f(2F5/2,2F7/2) yellow emissions of Ce3+. The PL intensity of Ce3+,Eu3+- codoped YAG phosphors increases with calcination temperature, while dramatically decreases with increasing the Eu3+-doped concentration from 0.11 to 4.40 at.%. Additionally, the geometrical distortion surrounding Ce3+introduced by incorporated Eu3+results in the variation of crystal field. It causes red shift of the PL emission band of YAG:Ce,Eu phosphors.
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影响因子:
4.6
作者:
He X;Liu X;Li R;Yang B;Yu K;Zeng M;Yu R
通讯作者:
Yu R
影响因子:
4
作者:
A. Potdevin;G. Chadeyron;V. Briois;F. Leroux;C. Santilli;M. Dubois;D. Boyer;R. Mahiou
通讯作者:
A. Potdevin;G. Chadeyron;V. Briois;F. Leroux;C. Santilli;M. Dubois;D. Boyer;R. Mahiou
影响因子:
6.4
作者:
Haiming Qin;Jun Jiang;Zhaohua Luo;Haochua
通讯作者:
Haochua
影响因子:
5.3
作者:
K. Kanehashi;K. Saito
通讯作者:
K. Kanehashi;K. Saito
影响因子:
4.5
作者:
O. Yamaguchi;K. Takeoka;Ken Hirota;H. Takano;Akira Hayashida
通讯作者:
O. Yamaguchi;K. Takeoka;Ken Hirota;H. Takano;Akira Hayashida