...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Materials Research Bulletin >Preparation and spectroscopic properties of rare-earth (RE) (RE = Sm, Eu, Tb, Dy, Tm)-activated K_2LnZr(PO_4)_3 (Ln = Y, La, Gd and Lu) phosphate in vacuum ultraviolet region
【24h】

Preparation and spectroscopic properties of rare-earth (RE) (RE = Sm, Eu, Tb, Dy, Tm)-activated K_2LnZr(PO_4)_3 (Ln = Y, La, Gd and Lu) phosphate in vacuum ultraviolet region

机译：稀土（RE）（稀土= Sm，Eu，Tb，Dy，Tm）活化的K_2LnZr（PO_4）_3（Ln = Y，La，Gd和Lu）磷酸盐的制备及光谱性质

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Rare earth (RE = Sm, Eu, Tb, Dy and Tm)-activated K_2LnZr(PO_4)_3 (Ln = Y, La, Gd and Lu) have been synthesized by solid-state reaction method, and their vacuum ultraviolet (VUV) excitation luminescent characteristics have been investigated. The band in the wavelength range of 130-157 nm and the other one range from 155 to 216 nm with the maximum at about 187 nm in the VUV excitation spectra of these compounds are attributed to the host lattice absorption and O-Zr charge transfer transition, respectively. The charge transfer bands (CTB) of O~(2-)-Sm~(3+), O~(2-)-Dy~(3+) and O~(2-)-Tm~(3+), in Sm~(3+), Dy~(3+) and Tm~(3+)-activated samples, have not been obviously observed probably because the 2p electrons of oxygen are tightly bound to the zirconium ion in the host lattice. For Eu~(3+)-activated samples, the relatively weak O2- -Eu~(3+) CTB at about 220 nm is observed. And for Tb~(3+)-activated samples, the bands at 223 and 258 nm are related to the 4f-5d spin-allowed and spin-forbidden transitions of Tb~(3+), respectively. It is observed that there is energy transfer between the host lattice and the luminescent activators (e.g. Eu~(3+), Tb~(3+)). From the standpoint of luminescent efficiency, color purity and chemical stability, K_2GdZr(PO_4)3:Sm~(3+), Eu~(3+), Tb~(3+) are attractive candidates for novel yellow, red, green-emitting PDP phosphors.
机译：通过固相反应法合成了稀土（RE = Sm，Eu，Tb，Dy和Tm）活化的K_2LnZr（PO_4）_3（Ln = Y，La，Gd和Lu），并用真空紫外（VUV）已经研究了激发发光特性。这些化合物的VUV激发光谱中的130-157 nm波长范围内的另一个带在155至216 nm范围内的最大值在大约187 nm处，这归因于主体晶格吸收和O-Zr电荷转移跃迁， 分别。 O〜（2-）-Sm〜（3 +），O〜（2-）-Dy〜（3+）和O〜（2-）-Tm〜（3+）的电荷转移带（CTB），在Sm〜（3 +），Dy〜（3+）和Tm〜（3+）活化的样品中，可能没有观察到明显的现象，这可能是因为氧的2p电子紧密结合在主晶格中的锆离子上。对于Eu〜（3+）活化的样品，观察到在约220 nm处相对较弱的O2- -Eu〜（3+）CTB。对于Tb〜（3+）活化的样品，在223和258 nm处的谱带分别与Tb〜（3+）的4f-5d自旋转变和自旋禁变有关。观察到在主晶格和发光活化剂（例如Eu〜（3 +），Tb〜（3+））之间存在能量转移。从发光效率，色纯度和化学稳定性的角度来看，K_2GdZr（PO_4）3：Sm〜（3 +），Eu〜（3 +），Tb〜（3+）是新颖的黄色，红色，绿色-发射PDP荧光粉。

著录项

  • 来源
    《Materials Research Bulletin》 |2013年第2期|224-231|共8页
  • 作者

    Zhi-Jun Zhang; Xiao Lin; Jing-Tai Zhao; Guo-Bin Zhang;

  • 作者单位

    Key Laboratory of Transparent Opto-Functional Inorganic Materials of Chinese Academy of Sciences, Shanghai Institute of Ceramics, Shanghai, 200050, PR China;

    Key Laboratory of Transparent Opto-Functional Inorganic Materials of Chinese Academy of Sciences, Shanghai Institute of Ceramics, Shanghai, 200050, PR China,Graduate School of Chinese Academy of Science, Beijing, 100039, PR China;

    Key Laboratory of Transparent Opto-Functional Inorganic Materials of Chinese Academy of Sciences, Shanghai Institute of Ceramics, Shanghai, 200050, PR China;

    National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, 230026, PR 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

    d. luminescence; a: optical materials;

    机译：d。发光A：光学材料;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号