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首页> 外文期刊>Optical Materials >CaSc2O4:Eu3+: A tunable full-color emitting phosphor for white light emitting diodes
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CaSc2O4:Eu3+: A tunable full-color emitting phosphor for white light emitting diodes

机译：CaSc2O4：Eu3 +：用于白色发光二极管的可调全色发光磷光体

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摘要

We report an intense full-color emission originating from ~5D_(0,1,2.3) to ~7F_(0,i,2.3.4) transitions of Eu~(3+) in CaSc_2O_4 upon 395 nm excitation. The emission spectra vary with increasing Eu~(3+) concentration, demonstrating tunable color coordinates from white to red region in the C1E chromaticity diagram. Considering the relaxation from ~5D_J to ~5D_(J_1) through cross energy transfer, the Eu~(3+) concentration dependent emission spectra are well simulated based on the analysis of steady state rate equations and the measured lifetimes of the ~5D_J levels. It is suggested that CaSc2_O_4:Eu~(3+) could be a potential single-phased full-color emitting phosphor for near-ultraviolet InGaN chip pumped white light emitting diodes.
机译：我们报道了在395 nm激发下CaSc_2O_4中Eu〜（3+）的〜5D_（0,1,2.3）到〜7F_（0，i，2.3.4）跃迁引起的强烈全色发射。发射光谱随Eu〜（3+）浓度的增加而变化，在C1E色度图中显示了从白色到红色区域的可调颜色坐标。考虑到通过交叉能量转移从〜5D_J到〜5D_（J_1）的弛豫，基于稳态速率方程的分析和〜5D_J能级的实测寿命，很好地模拟了Eu〜（3+）浓度依赖的发射光谱。提示CaSc2_O_4：Eu〜（3+）可能是用于近紫外InGaN芯片泵浦白光发光二极管的潜在单相全色发射磷光体。

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  • 来源
    《Optical Materials》 |2011年第3期|p.355-358|共4页
  • 作者

    Zhendong Hao; Jiahua Zhang; Xia Zhang; Xiaojun Wang;

  • 作者单位

    Key Laboratory of Excited State Processes Changchun Institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences 3888 Eastern South Lake Road Changchun 130033 China;

    Key Laboratory of Excited State Processes Changchun Institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences 3888 Eastern South Lake Road Changchun 130033 China Department of Physics Georgia Southern University Statesboro CA 30460 USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    CaSc_2O_4; Eu~(3+); Full-color;

    机译：CaSc_2O_4;我〜（3+）;饱满的色彩;

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