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首页> 外文期刊>RSC Advances >Synthesis, structure and luminescence properties of new blue-green-emitting garnet-type Ca3Zr2SiGa2O12: Ce3+ phosphor for near-UV pumped white-LEDs
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Synthesis, structure and luminescence properties of new blue-green-emitting garnet-type Ca3Zr2SiGa2O12: Ce3+ phosphor for near-UV pumped white-LEDs

机译：新型蓝绿油石榴石型CA3ZR2SIGA2O12的合成，结构和发光性能：CE3 +近UV泵送白光LED的CE3 +磷光体

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摘要

A new blue-green-emitting phosphor Ca3Zr2SiGa2O12: Ce3+ has been synthesized by a conventional high temperature solid-state reaction method from the viewpoint of exploring new luminescent materials for white light-emitting diodes. The crystal structure of Ca3Zr2SiGa2O12 was investigated by the powder Xray diffraction refinement and verified to be garnet-type with the Ia3d space group and lattice constant a = b = c = 12.5730(7) angstrom. The luminescence properties, concentration quenching, fluorescence lifetime, thermal quenching, quantum efficiency, chromaticity coordinates and related mechanisms of the Ca3Zr2SiGa2O12: Ce3+ phosphor were investigated in detail. The optimized phosphor shows two main broad excitation bands with peaks at 330 nm and 400 nm, respectively, in the region of 300-450 nm, and exhibits intense blue-green emission with a peak wavelength at 478 nm under 400 nm excitation. The above results indicated that the phosphor can be effectively excited by near ultraviolet light and may have potential application as a near UV-convertible phosphor for white light-emitting diodes.
机译：一种新的蓝绿发光荧光粉CA3ZR2SIGA2O12：CE3 +通过传统的高温固态反应方法从探索用于白色发光二极管的新发光材料的观点来合成。通过粉末X射线衍射细化研究Ca3zR2Siga2O12的晶体结构，并用IA3D空间组和晶格常数A = B = C = 12.5730（7）埃而被验证为石榴石型。研究了发光性质，浓度淬火，荧光寿命，热猝灭，量子效率，色度率，色度坐标和相关机制的CA3ZR2SIGA2O12：CE3 +磷光体。优化的磷光体在300-450nm的区域中分别在330nm和400nm处具有330nm和400nm的两个主要宽激励带，并且在400nm激发下，在478nm处具有峰值波长的强烈蓝绿色发射。上述结果表明，该荧光体可以通过近紫外光被有效地激发，并且可能具有潜在的应用作为用于白色发光二极管的近UV-转换磷光体。

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  • 来源
    《RSC Advances》 |2016年第3期|共7页
  • 作者

    Zhong Jiyou; Zhuang Weidong; Xing Xianran; Liu Ronghui; Li Yanfeng; Zheng Yaling; Hu Yunsheng; Xu Huibing;

  • 作者单位

    Grirem Adv Mat Co Ltd Gen Res Inst Nonferrous Met Natl Engn Res Ctr Rare Earth Mat Beijing 100088 Peoples R China;

    Grirem Adv Mat Co Ltd Gen Res Inst Nonferrous Met Natl Engn Res Ctr Rare Earth Mat Beijing 100088 Peoples R China;

    Univ Sci &

    Technol Beijing Dept Phys Chem Beijing 100083 Peoples R China;

    Grirem Adv Mat Co Ltd Gen Res Inst Nonferrous Met Natl Engn Res Ctr Rare Earth Mat Beijing 100088 Peoples R China;

    Grirem Adv Mat Co Ltd Gen Res Inst Nonferrous Met Natl Engn Res Ctr Rare Earth Mat Beijing 100088 Peoples R China;

    Grirem Adv Mat Co Ltd Gen Res Inst Nonferrous Met Natl Engn Res Ctr Rare Earth Mat Beijing 100088 Peoples R China;

    Grirem Adv Mat Co Ltd Gen Res Inst Nonferrous Met Natl Engn Res Ctr Rare Earth Mat Beijing 100088 Peoples R China;

    Grirem Adv Mat Co Ltd Gen Res Inst Nonferrous Met Natl Engn Res Ctr Rare Earth Mat Beijing 100088 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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