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Inducing tunable host luminescence in Zn2GeO4 tetrahedral materials via doping Cr3+
被引:13
|作者:
Bai, Qiongyu
[1
,2
]
Li, Panlai
[3
]
Wang, Zhijun
[3
]
Xu, Shuchao
[3
]
Li, Ting
[3
]
Yang, Zhiping
[3
]
Xu, Zheng
[1
,2
]
机构:
[1] Beijing Jiaotong Univ, Minist Educ, Key Lab Luminescence & Opt Informat, Beijing 100044, Peoples R China
[2] Beijing Jiaotong Univ, Inst Optoelect Technol, Beijing 100044, Peoples R China
[3] Hebei Univ, Coll Phys Sci & Technol, Hebei Key Lab Opt Elect Informat & Mat, Baoding 071002, Peoples R China
基金:
中国国家自然科学基金;
关键词:
Luminescence;
Phosphors;
Defect;
Cr3+;
THERMALLY STIMULATED LUMINESCENCE;
FIELD-EMISSION DISPLAYS;
PERSISTENT LUMINESCENCE;
PHOTOCATALYTIC ACTIVITY;
PHOTOLUMINESCENCE;
PHOSPHORS;
NANOROD;
PHOTOCHROMISM;
NANOCRYSTALS;
WHITE;
D O I:
10.1016/j.saa.2018.03.065
中图分类号:
O433 [光谱学];
学科分类号:
0703 ;
070302 ;
摘要:
Zn2GeO4 consisting of tetrahedron, and it is a self-luminescent material due to the presence of the native defects and shows a bluish white emission excited by ultraviolet. Although Cr3+ doped in a tetrahedron generally cannot show luminescence, in this research, new defects are formed as Cr3+ doped in Zn2GeO4, hence a green emission band can be obtained. Meanwhile, the intensity of host emission is also decreased. Therefore, Zn2GeO4:Cr3+ are synthesized using a high-temperature solid-phase method. Thermoluminescence (TL) and luminescence decay curves are used to investigate the variation of native defects. The emission colour can be tuned from bluish white to green when Cr3+ doped in Zn2GeO4. This result has guidance for controlling the native emission of self-luminescent material. (C) 2018 Elsevier B.V. All rights reserved.
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页码:179 / 188
页数:10
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