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首页> 外文期刊>Materials Letters >Photoluminescence properties of Ca_8Zn(SiO_4)4Cl_2: Ce~(3+), Mn~(2+) as a color-tunable phosphor for near-ultraviolet-pumped white light-emitting diodes
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Photoluminescence properties of Ca_8Zn(SiO_4)4Cl_2: Ce~(3+), Mn~(2+) as a color-tunable phosphor for near-ultraviolet-pumped white light-emitting diodes

机译:Ca_8Zn(SiO_4)4Cl_2:Ce〜(3+),Mn〜(2+)作为近紫外泵浦白色发光二极管的颜色可调荧光粉的光致发光特性

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摘要

In this article, we firstly reported a novel color-tunable luminescence phosphors of Ca8Zn(SiO4)(4)Cl-2: Ce3+, Mn2+. Ca8Zn(SiO4)(4)Cl-2: Ce3+, Mn2+ phosphors could be efficiently excited by near-ultraviolet light to exhi- bit the blue and orange-red emission bands peaking at 411 and 600 nm corresponding to the 4f(0)5d(1)-4f(1) transition of Ce3+ and the T-4(1)((4)G)-(6)A(1)(S-6) transition of Mn2+, respectively. Utilizing the principle of energy transfer from Ce3+ to Mn2+ ions, our phosphors could be tuned the chromaticity coordinates from blue to orange-white and eventually to orange-red by appropriate adjusting the Mn2+ doping concentration. Based on the theoretical calculation, the energy transfer from Ce3+ to Mn2+ ions was demonstrated to be the dipole-dipole interaction mechanism with the maximum efficiency of 75.43%. Combining the 370 nm near-ultraviolet chip and the typical Ca8Zn(SiO4)(4)Cl-2: 0.03Ce(3+), 0.05Mn(2+) phosphor finally produced the warm white light-emitting diode with high color rendering index of 86.6, demonstrating the potential of our phosphors for white light-emitting diode applications. (C) 2020 Elsevier B.V. All rights reserved.
机译:在本文中,我们首先报道了一种新型的Ca8Zn(SiO4)(4)Cl-2色可调荧光粉:Ce3 +,Mn2 +。 Ca8Zn(SiO4)(4)Cl-2:Ce3 +,Mn2 +荧光粉可被近紫外光有效激发,以显示对应于4f(0)5d的峰值在411和600 nm处的蓝色和橘红色发射带Ce3 +的(1)-4f(1)跃迁和Mn2 +的T-4(1)((4)G)-(6)A(1)(S-6)跃迁。利用从Ce3 +到Mn2 +离子的能量转移原理,可以通过适当调整Mn2 +的掺杂浓度,将我们的磷光体的色度坐标从蓝色调整为橙白色,最终调整为橙红色。根据理论计算,证明Ce3 +离子向Mn2 +离子的能量转移是偶极-偶极相互作用的机理,最大效率为75.43%。结合370 nm的近紫外芯片和典型的Ca8Zn(SiO4)(4)Cl-2:0.03Ce(3 +),0.05Mn(2+)荧光粉,最终制得了具有高显色指数的暖白色发光二极管强度为86.6,证明了我们的荧光粉在白色发光二极管应用中的潜力。 (C)2020 Elsevier B.V.保留所有权利。

著录项

  • 来源
    《Materials Letters》 |2020年第may15期|127559.1-127559.3|共3页
  • 作者

  • 作者单位

    Hebei Univ Technol Sch Mat Sci & Engn Inst Power Source & Ecomat Sci Tianjin 300130 Peoples R China;

  • 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; Ca8Zn(SiO4)(4)Cl-2: Ce3+; Mn2+; WLEDs;

    机译:荧光粉发光;Ca8Zn(SiO4)(4)Cl-2:Ce3 +;Mn2 +;发光二极管;

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