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首页> 外文期刊>RSC Advances >Synthesis, crystal structure and photoluminescence properties of Eu2+-activated RbCaGd(PO4)(2) phosphors
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Synthesis, crystal structure and photoluminescence properties of Eu2+-activated RbCaGd(PO4)(2) phosphors

机译：EU2 + -Activated RBCAGD（PO4）（2）磷光体的合成，晶体结构和光致发光性能

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摘要

A series of novel double-phosphate compounds RbCaGd(PO4)(2):Eu2+ were first synthesized by the Pechinitype sol-gel method, and their structure and luminescence properties were characterized in detail. The compound RbCa0.97Gd(PO4)(2):0.03Eu(2+) crystallizes in the hexagonal system with space group P6(2)22 and the parameters a = 7.006(49) angstrom, c = 6.358(80) angstrom, and V = 269.969 angstrom(3), Z = 1. Its crystal structure is similar to that of hexagonal LnPO(4), where the Rb atom occupies a large tunnel in the lattice and the Ln position is statistically occupied by both Gd and Ca (Eu) atoms. In addition, RbCaGd(PO4)(2):Eu2+ produces an intense broadband emission from 400 to 600 nm with the CIE coordinates near (0.2089, 0.2674) and assembles a broad excitation spectrum from 250 to 425 nm. The concentration quenching, crystal field splitting, critical energy transfers distance and thermally stable luminescence properties of RbCaGd(PO4)(2):Eu2+ phosphors are all discussed, which indicate that this material can be considered as a promising bluish green phosphor for application in white-light UV LEDs.
机译：一系列新型的双磷酸化合物RBCAGD（PO4）（2）：EU2 +首先通过PECHINITESPE溶胶 - 凝胶法合成，并详细表征它们的结构和发光性能。化合物RBCA0.97GD（PO4）（2）：0.03EU（2+）在具有空间组P6（2）22的六边形系统中结晶，参数A = 7.006（49）埃，C = 6.358（80）埃，和V = 269.969埃（3）中，Z = 1。其晶体结构类似于六边形LnPO（4），其中，RB原子占有相当大的隧道在晶格和Ln的位置统计由两者的Gd和Ca占据（欧盟）原子。此外，RBCAGD（PO4）（2）：EU2 +从400至600nm产生强烈的宽带发射，CIE坐标接近（0.2089,0.2674），并从250至425nm组合广泛的激发光谱。 RBCAGD（PO4）（2）（2）（2）（2）（2）的浓度淬火，晶体场分裂，临界能量转移性能和热稳定的发光性质均讨论，这表明该材料可被认为是一种有前景的蓝绿色磷光体，适用于白色 - 灯光LED。

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  • 来源
    《RSC Advances》 |2016年第14期|共7页
  • 作者

    Chen Xue; Wang Qidi; Lv Fengzhu; Chu Paul K.; Zhang Yihe;

  • 作者单位

    China Univ Geosci Sch Mat Sci &

    Technol Natl Lab Mineral Mat Beijing Key Lab Mat Utilizat Nonmetall Minerals &

    Beijing 100083 Peoples R China;

    China Univ Geosci Sch Earth Sci &

    Resources Beijing 100083 Peoples R China;

    China Univ Geosci Sch Mat Sci &

    Technol Natl Lab Mineral Mat Beijing Key Lab Mat Utilizat Nonmetall Minerals &

    Beijing 100083 Peoples R China;

    City Univ Hong Kong Dept Phys &

    Mat Sci Kowloon Hong Kong Peoples R China;

    China Univ Geosci Sch Mat Sci &

    Technol Natl Lab Mineral Mat Beijing Key Lab Mat Utilizat Nonmetall Minerals &

    Beijing 100083 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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