Surfactant-Assisted Hydrothermal Synthesis of Eu3+-Doped White Light Hydroxyl Sodium Yttrium Tungstate Microspheres and Their Conversion to NaY(WO4)2

被引:91
作者
Lei, Fang [1 ]
Yan, Bing [1 ]
Chen, Hao Hong [2 ]
Zhao, Jing Tai [2 ]
机构
[1] Tongji Univ, Dept Chem, Shanghai 200092, Peoples R China
[2] Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Transparent Optofunct Inorgan Mat, Shanghai 200050, Peoples R China
基金
美国国家科学基金会;
关键词
OPTICAL-PROPERTIES; AQUEOUS-SOLUTIONS; SINGLE-CRYSTALS; BLOCK-COPOLYMER; RED PHOSPHOR; LUMINESCENCE; EU3+; PHOTOLUMINESCENCE; FABRICATION; YTTERBIUM;
D O I
10.1021/ic900699h
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
In this work, large-scale three-dimensional "flake-ball" microarchitectures of Eu3+ doped white light hydroxyl sodium yttrium tungstate were prepared by the well-known hydrothermal approach at 180 degrees C for 48 h in the presence of triblock-copolymer poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol) (P123). NaY-(WO4)(2):E3+ phosphor was formed by annealing the hydrothermal product at similar to 630 degrees C for 2 h. A time-dependent microstructure evolution study was performed under hydrothermal reaction. The evolution process is the self-assembly process of P123, and the effects of other reaction parameters, such as influence of the concentration of P123 on morphology, and the influence of temperature on PL. The mechanism by which the "flake-ball" particles are formed is discussed in detail. The PL spectra of Eu3+-doped hydroxyl sodium yttrium tungstate phosphor contain two parts: the broad blue-green band and the D-5(0) -> F-7(J) (J = 1, and 2) characteristic transition of Eu3+. This approach provides a facile route for the production of high-quality hydroxyl sodium yttrium tungstate microstructures with an interesting optical property.
引用
收藏
页码:7576 / 7584
页数:9
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