| 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 |
| Growth and optical properties of Dy3+/Eu3+ co-doped NaYF4 single crystals with cubic lattice for white LED application |
| Author Name | Affiliation | | JIANG Dong-sheng | Key Laboratory of Photoelectronic Materials, Ningbo University, Ningbo 315211, China | | JIANG Yong-zhang | Key Laboratory of Photoelectronic Materials, Ningbo University, Ningbo 315211, China | | XIA Hai-ping | Key Laboratory of Photoelectronic Materials, Ningbo University, Ningbo 315211, China | | ZHANG Jia-zhong | Key Laboratory of Photoelectronic Materials, Ningbo University, Ningbo 315211, China | | YANG Shuo | Key Laboratory of Photoelectronic Materials, Ningbo University, Ningbo 315211, China | | GU Xue-mei | Key Laboratory of Photoelectronic Materials, Ningbo University, Ningbo 315211, China | | JIANG Hao-chuan | Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315211, China | | CHEN Bao-jiu | Department of Physics, Dalian Maritime University, Dalian 116026, China |
|
| 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). |
| Hits: 6682 |
| Download times: 0 |
| This work has been supported by the National Natural Science Foundation of China (Nos.51472125 and 51272109), and the K. C. Wong Magna |
| View Full Text Download reader |
|
|
|
