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Citation: WANG Meifang, ZHOU Liqun, LI Ling, XIA Qinghua. Synthesis of Li⁺ and Eu³⁺ Co-doped La₂MoO₆ Red Phosphors by Pechini Methods and Its Photoluminescence Properties Under Near-Ultraviolet and Blue Light[J]. Chinese Journal of Applied Chemistry, ;2015, 32(4): 447-452. doi: 10.11944/j.issn.1000-0518.2015.04.140242 shu

Synthesis of Li⁺ and Eu³⁺ Co-doped La₂MoO₆ Red Phosphors by Pechini Methods and Its Photoluminescence Properties Under Near-Ultraviolet and Blue Light

1.
Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China

Corresponding author: ZHOU Liqun,
Received Date: 14 July 2014
Available Online: 29 December 2014
Fund Project: 国家自然科学基金(21301053) (21301053)湖北省自然科学基金创新群体项目(2014CFA015) (2014CFA015)国家级大学生创新训练项目(201210512021) (201210512021)

A series of Li⁺ and Eu³⁺ co-doped red phosphors La_1.9-xMoO₆:0.10Eu³⁺,xLi⁺(x=0,0.10,0.20,0.25) has been successfully synthesized via Pechiini method. And the samples were investigated by the X-ray diffraction(XRD),scanning electron microscope(SEM),energy dispersive spectrometer(EDS) and photoluminescence(PL) measurements. The PL results reveal that the samples can be excited efficiently by near-ultraviolet(near-UV)(395 nm) and blue light(466 nm),and exhibit strong red emission peaks at 616 nm and 623 nm,due to the⁵D₀→⁷F₂ electric dipole transition of Eu³⁺. These phosphors exhibit potential commercial value since they match well with white light emitting diode(W-LED) near-UV chip(370~410 nm) and blue light chip(450~470 nm). Addition of Li⁺ acting as a sensitizer strongly enhances the emission intensity of the phosphors,and the optimum concentration is x=0.20.
- pechini method,
- La₂MoO₆:Eu³⁺,
- Li⁺sensitizer,
- photoluminescence
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Synthesis of Li+ and Eu3+ Co-doped La2MoO6 Red Phosphors by Pechini Methods and Its Photoluminescence Properties Under Near-Ultraviolet and Blue Light

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通讯作者: 陈斌, bchen63@163.com

Synthesis of Li⁺ and Eu³⁺ Co-doped La₂MoO₆ Red Phosphors by Pechini Methods and Its Photoluminescence Properties Under Near-Ultraviolet and Blue Light