Tunable luminescence of Ce3+/Li+,Eu2+ co-doped Ca4（PO4）2O phosphor for white light emitting diodes
来源期刊：JOURNAL OF RARE EARTHS2016年第1期
论文作者：李银群 马红萍 华有杰 杨清华 李晨霞 邓德刚 徐时清
文章页码：7 - 11
摘 要：Phosphors Ca4（PO4）2O:Ce3+/Li+,Eu2+ were prepared by solid state reaction successfully, and characterized by X-ray diffraction, UV-Vis spectrometer and photoluminescence spectrometry. The as-prepared phosphors exhibited strong absorption in the UV-visible region and dual-emission bands centered at approximately 460 and 630 nm. Energy transfer from Ce3+ to Eu2+ was also observed. By varying the excitation wavelength, these new phosphors exhibited tunable emissions from blue to white and then to yellow, making them potential candidates as UV-convertible phosphors for white light emitting diodes.
李银群1，马红萍2，华有杰1，杨清华1，李晨霞1，邓德刚1，徐时清1
1. College of Materials Science and Engineering,China Jiliang University2. School of Mechanical & Automotive Engineering, Zhejiang University of Science and Technology
摘 要：Phosphors Ca4（PO4）2O:Ce3+/Li+,Eu2+ were prepared by solid state reaction successfully, and characterized by X-ray diffraction, UV-Vis spectrometer and photoluminescence spectrometry. The as-prepared phosphors exhibited strong absorption in the UV-visible region and dual-emission bands centered at approximately 460 and 630 nm. Energy transfer from Ce3+ to Eu2+ was also observed. By varying the excitation wavelength, these new phosphors exhibited tunable emissions from blue to white and then to yellow, making them potential candidates as UV-convertible phosphors for white light emitting diodes.
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