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Enhanced emission from CaSi_2O_2N_2:Eu~(2+) phosphors by doping with Y~(3+) ions

机译:通过掺杂Y〜(3+)离子增强CaSi_2O_2N_2:Eu〜(2+)荧光粉的发射

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摘要

Yttrium doped CaSi_2O_2N_2:Eu~(2+) phosphors were prepared by the solid state reaction method. Large increases in the emission have been achieved by adding Y~(3+) ions in the host. XRD data revealed that the lattice expanded as doping Y~(3+) ions. XPS results suggested that there were more Eu~(2+) ions incorporated into the lattice of Y~(3+) doped samples than that of undoped samples. The doping effect of Y~(3+) ions has been discussed systematically. By using this novel Y~(3+) doped CaSi_2O_2N_2:Eu~(2+) phosphor, bright daylight emission with luminous efficiency (η_L) of 44 lm/W, color rendering index (CRI) of 82 and correlated color temperature (CCT) of 5300 K can be generated from white LED.
机译:采用固相反应法制备了钇掺杂的CaSi_2O_2N_2:Eu〜(2+)荧光粉。通过在主体中添加Y〜(3+)离子,可以实现发射量的大幅增加。 XRD数据表明晶格扩展为掺杂Y〜(3+)离子。 XPS结果表明,掺入Y〜(3+)的样品的晶格中掺入的Eu〜(2+)离子比未掺入样品的Eu〜(2+)离子多。对Y〜(3+)离子的掺杂效应进行了系统的讨论。通过使用这种新型的Y〜(3+)掺杂的CaSi_2O_2N_2:Eu〜(2+)荧光粉,可以实现明亮的日光发射,发光效率(η_L)为44 lm / W,显色指数(CRI)为82,相关色温(CCT)白色LED可以产生5300 K的)。

著录项

  • 来源
    《Materials Letters》 |2009年第16期|1448-1450|共3页
  • 作者单位

    State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China;

    State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China;

    Engineering Research Center of Advanced Classes Manufacturing Technology, MOE, China;

    State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China;

    Nano Ceramics Center, National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan;

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

    phosphors; luminescence; crystal structure;

    机译:荧光粉发光晶体结构;
  • 入库时间 2022-08-17 13:19:36

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