color-tunable emission;
energy transfer;
Sr2Gd8(SiO4)(6)O-2:Ce3+/Mn2+;
ENERGY-TRANSFER;
PHOTOLUMINESCENCE PROPERTIES;
TUNABLE COLOR;
STRUCTURE REFINEMENT;
SITE OCCUPANCY;
LUMINESCENCE;
TB3+;
EU2+;
PHASE;
CE3+;
D O I:
10.1002/slct.201900206
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
Sr2Gd8(SiO4)(6)O-2:Ce3+/Mn2+, an oxyapatite structure phosphor, was prepared through a high temperature solid state reaction method. The crystal structure, luminescence properties, and energy transfer mechanism of the samples were investigated in detail. Under the irradiation of 330 nm, tunable colors from blue to yellow, including white can be realized through the energy transfer from Ce3+ to Mn2+ ions. The energy transfer mechanism of Ce3+ -> Mn2+ was discussed and demonstrated to be a dipole-dipole interaction according to the results of the emission spectra and decay curves of the phosphors. Moreover, the thermal stability of the Ce3+ and Mn2+ co-doped Sr2Gd8(SiO4)(6)O-2 phosphors were studied through the temperature-dependent emission spectra. The results suggest that Sr2Gd8(SiO4)(6)O-2:Ce3+/Mn2+ maybe used as color tunable phosphors in white-light-emitting diodes (WLEDs) .
机构:
Chongqing Univ Arts & Sci, Res Inst New Mat Technol, Chongqing 402160, Peoples R ChinaChongqing Univ Arts & Sci, Res Inst New Mat Technol, Chongqing 402160, Peoples R China
Zhao, Cong
Wu, Yan-Hui
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Chongqing Univ Arts & Sci, Res Inst New Mat Technol, Chongqing 402160, Peoples R ChinaChongqing Univ Arts & Sci, Res Inst New Mat Technol, Chongqing 402160, Peoples R China
Wu, Yan-Hui
Wang, Ding-Hong
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机构:
Chongqing Univ Arts & Sci, Res Inst New Mat Technol, Chongqing 402160, Peoples R ChinaChongqing Univ Arts & Sci, Res Inst New Mat Technol, Chongqing 402160, Peoples R China
Wang, Ding-Hong
Cao, Shi-Xiu
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机构:
Chongqing Univ Arts & Sci, Res Inst New Mat Technol, Chongqing 402160, Peoples R ChinaChongqing Univ Arts & Sci, Res Inst New Mat Technol, Chongqing 402160, Peoples R China
Cao, Shi-Xiu
Chen, Shan-Yong
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机构:
Chongqing Univ Arts & Sci, Res Inst New Mat Technol, Chongqing 402160, Peoples R ChinaChongqing Univ Arts & Sci, Res Inst New Mat Technol, Chongqing 402160, Peoples R China
Chen, Shan-Yong
Peng, Ling-Ling
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Chongqing Univ Arts & Sci, Res Inst New Mat Technol, Chongqing 402160, Peoples R ChinaChongqing Univ Arts & Sci, Res Inst New Mat Technol, Chongqing 402160, Peoples R China
Peng, Ling-Ling
Zhu, Da-Chuan
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机构:
Sichuan Univ, Coll Mat Sci & Engn, Chengdu 610065, Sichuan, Peoples R ChinaChongqing Univ Arts & Sci, Res Inst New Mat Technol, Chongqing 402160, Peoples R China