Home > Archive>Volume 11, Issue 5, 2015 >356-360. DOI:10.1007/s11801-015-5115-x
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Growth and optical properties of Dy3+/Eu3+ co-doped NaYF4 single crystals with cubic lattice for white LED application
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1. Key Laboratory of Photoelectronic Materials, Ningbo University, Ningbo 315211, China;;2. Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315211, China;;3. Department of Physics, Dalian Maritime University, Dalian 116026, China

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This work has been supported by the National Natural Science Foundation of China (Nos.51472125 and 51272109), and the K. C. Wong Magna

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    Abstract:

    Dy3+/Eu3+ co-doped cubic lattice NaYF4 single crystal with high quality in the size of ~Φ1.0 cm×10.0 cm was grown by an improved Bridgman method using potassium fluoride (KF) as assistant flux. X-ray diffraction (XRD), absorption spectra, excitation spectra and emission spectra are measured to investigate the phase and luminescent properties of the crystal. The effects of excitation wavelength and concentrations of Dy3+ and Eu3+ ions on the luminescent characteristics are analyzed. The NaYF4 single crystal with the doping molar concentrations of 1.205% Dy3+ and 0.366% Eu3+ exhibits an excellent white light emission with chromaticity coordinates of x=0.321, y=0.332. It indicates that the Dy3+/Eu3+ co-doped cubic lattice NaYF4 single crystal can be a potential luminescent material for the ultraviolet (UV) light excited white light emitting diode (w-LED).

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JIANG Dong-sheng, JIANG Yong-zhang, XIA Hai-ping, ZHANG Jia-zhong, YANG Shuo, GU Xue-mei, JIANG Hao-chuan, CHEN Bao-jiu. Growth and optical properties of Dy3+/Eu3+ co-doped NaYF4 single crystals with cubic lattice for white LED application[J]. Optoelectronics Letters,2015,11(5):356-360

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  • Received:June 24,2015
  • Online: November 26,2015
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