...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Controllable synthesis of lanthanide Yb3+ and Er3+ co-doped AWO(4) (A = Ca, Sr, Ba) micro-structured materials: phase, morphology and up-conversion luminescence enhancement
【24h】

Controllable synthesis of lanthanide Yb3+ and Er3+ co-doped AWO(4) (A = Ca, Sr, Ba) micro-structured materials: phase, morphology and up-conversion luminescence enhancement

机译：可控合成镧系元素YB3 +和ER3 +共掺杂AWO（4）（a = Ca，Sr，Ba）微结构材料：相，形态和上转换发光增强

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Lanthanide ion (Yb3+, Er3+) co-doped AWO(4) (A = Ca, Sr, Ba) up-conversion (UC) luminescent materials have been synthesized using a hydrothermal method and characterized by various microstructural and optical techniques. The results indicate that AWO(4):Yb3+,Er3+ samples have an identical body-centered tetragonal scheelite structure with different morphologies, including CaWO4:Yb3+,Er3+ microspheres, dumbbell-like SrWO4:Yb3+,Er3+ and bipyramid-like BaWO4:Yb3+,Er3+. These samples exhibit visible emissions via an UC process under near-infrared (NIR) light (980 nm) excitation. Interestingly, the UC luminescence properties of AWO(4):Yb3+,Er3+ can be prominently increased after combination with fluorescent carbon dots (CDs) to form CDs@AWO(4):Yb3+,Er3+ composites. Compared to the corresponding samples without combination with CDs, the UC emission intensities of CDs@CaWO4:Yb3+,Er3+, CDs@SrWO4:Yb3+,Er3+ and CDs@BaWO4:Yb3+,Er3+ composites increase about three, six and seven fold in the green emission area, and two, three and four fold in the red emission area, respectively. The mechanism of UC luminescence enhancement is probably that the loss of non-radiative transitions from the higher energy levels to the lower excited levels could be effectively reduced through the energy capture by the CD energy levels. The fluorescence enhancement for Yb3+ and Er3+ co-doped AWO(4) through combination with CDs provides a simple strategy for the tungstate system and other UC luminescent host systems.
机译：镧系元素离子（镱，铒）共掺杂AWO（4）（A =钙，锶，钡）的上转换（UC）的发光材料已使用水热法合成并表征了通过各种微观结构和光学技术。结果表明，AWO（4）：镱，铒样品具有不同形貌，包括粉CaWO4相同体心四方白钨矿结构：镱，铒微球，哑铃状SrWO4：镱，铒和双锥状BaWO4：镱， Er3 +离子。这些样品通过UC过程下表现出近红外（NIR）光（980纳米）激发可见的排放。有趣的是，AWO（4）的UC发光性能：镱，铒复合材料：镱，铒，可以显着用荧光碳点（CDS），以形成光盘@ AWO（4）组合后增加。相比于没有合并相应的样品的CD，CD的UC排放强度@粉CaWO4：镱，铒，光盘@ SrWO4：镱，铒和CD @ BaWO4：镱，铒复合增长约三，六，七均价在绿色发射区，和二，三，分别四倍在红色发射区，。 UC发光增强的机理可能是从更高的能量水平较低的兴奋水平无辐射跃迁的损失可以通过由CD能级的能量捕获有效地减少。荧光增强中Yb3 +和铒共掺杂AWO（4）通过结合的CD提供了钨系统和其他UC发光主机系统中的简单的策略。

著录项

  • 来源
  • 作者

    Huang Jingbin; Li Qingfeng; Wang Jia; Jin Lin; Tian Boshi; Li Chunyang; Shi Yurong; Wang Zhenling; Hao Jianhua;

  • 作者单位

    Zhoukou Normal Univ Key Lab Rare Earth Funct Mat &

    Applicat Henan Key Lab Rare Earth Funct Mat Zhoukou 466001 Peoples R China;

    Zhoukou Normal Univ Key Lab Rare Earth Funct Mat &

    Applicat Henan Key Lab Rare Earth Funct Mat Zhoukou 466001 Peoples R China;

    Zhoukou Normal Univ Key Lab Rare Earth Funct Mat &

    Applicat Henan Key Lab Rare Earth Funct Mat Zhoukou 466001 Peoples R China;

    Zhoukou Normal Univ Key Lab Rare Earth Funct Mat &

    Applicat Henan Key Lab Rare Earth Funct Mat Zhoukou 466001 Peoples R China;

    Zhoukou Normal Univ Key Lab Rare Earth Funct Mat &

    Applicat Henan Key Lab Rare Earth Funct Mat Zhoukou 466001 Peoples R China;

    Zhoukou Normal Univ Key Lab Rare Earth Funct Mat &

    Applicat Henan Key Lab Rare Earth Funct Mat Zhoukou 466001 Peoples R China;

    Zhoukou Normal Univ Key Lab Rare Earth Funct Mat &

    Applicat Henan Key Lab Rare Earth Funct Mat Zhoukou 466001 Peoples R China;

    Zhoukou Normal Univ Key Lab Rare Earth Funct Mat &

    Applicat Henan Key Lab Rare Earth Funct Mat Zhoukou 466001 Peoples R China;

    Hong Kong Polytech Univ Dept Appl Phys Hong Kong Hong Kong Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;无机化学;
  • 关键词

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