• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Morphology control and enhancement of 1.5 mu m emission in Ca2+/Ce3+ codoped NaGdF4:Yb3+, Er3+ submicrorods
【24h】

Morphology control and enhancement of 1.5 mu m emission in Ca2+/Ce3+ codoped NaGdF4:Yb3+, Er3+ submicrorods

机译：Ca2 + / Ce3 + Compoped Nagdf4：Yb3 +，ER3 +亚译液中1.5μm排放的形态控制和增强

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

The successful synthesis of rare earth doped nano/microcrystals with the desired morphology, uniform monodispersity, and intense infrared emission is of fundamental significance, and would facilitate their application in infrared emission-related miniaturization and integration in optoelectronics. However, simultaneously controlling the morphology and enhancing the infrared emission through simple and effective methods has not been well explored. In this study, via Ca2+ doping with an optimized concentration of 25 mol% in the hydrothermal solution, irregular NaGdF4:Yb/ Er submicrocrystals converted into highly uniform submicrorods. Meanwhile, an obvious enhancement of visible upconversion (UC) and near-infrared (NIR) downconversion ( DC) emission were obtained, probably due to the improved morphology and lowering the local crystal field symmetry around the rare earth ions induced by Ca2+ doping. Furthermore, Ce3+ ions with an optimized concentration of 2 mol% were codoped to intentionally tailor the branching ratio through efficient energy transfer from Er3+ to Ce3+. As a result, the similar to 1530 nm emission intensity of the NaGdF4: 25Ca/2Ce/20Yb/2Er submicrorods increased by about 6.4 times in comparison with the NaGdF4:20Yb/2Er counterpart.
机译：成功合成稀土掺杂的纳米/微晶，具有所需的形态，均匀的单分散性和强烈的红外发射具有基本的意义，并有助于其在红外排放相关的小型化和在光电子中的整合中的应用。然而，通过简单且有效的方法同时控制形态和增强红外发射，并未探索。在本研究中，通过Ca2 +掺杂，在水热溶液中优化浓度为25mol％，不规则的NagdF4：Yb / ER亚微米转化成高度均匀的亚脉络衣。同时，获得了可见升高（UC）和近红外（NIR）下变化（DC）排放的明显增强，可能是由于改善的形态并降低了CA2 +掺杂诱导的稀土离子周围的局部晶体场对称性。此外，具有优化浓度为2摩尔％的Ce3 +离子被编码，通过从ER3 +至CE3 +的有效能量转移来故意定制分支比。结果，与NAGDF4：20YB / 2ER对应物相比，NAGDF4：25CA / 2CE / 20YB / 2ER亚微米霉菌腺草相似的与1530nm发射强度增加约6.4倍。

著录项

  • 来源
    《RSC Advances》 |2017年第76期|共7页
  • 作者

    Dai Jiangyun; Yang Chao; Zhang Hong; Zhang Hua; Feng Guoying; Zhou Shouhuan;

  • 作者单位

    Sichuan Univ Coll Elect &

    Informat Engn Inst Laser &

    Micro Nano Engn Chengdu 610064 Sichuan Peoples R China;

    Sichuan Univ Coll Elect &

    Informat Engn Inst Laser &

    Micro Nano Engn Chengdu 610064 Sichuan Peoples R China;

    Sichuan Univ Coll Elect &

    Informat Engn Inst Laser &

    Micro Nano Engn Chengdu 610064 Sichuan Peoples R China;

    Sichuan Univ Coll Elect &

    Informat Engn Inst Laser &

    Micro Nano Engn Chengdu 610064 Sichuan Peoples R China;

    Sichuan Univ Coll Elect &

    Informat Engn Inst Laser &

    Micro Nano Engn Chengdu 610064 Sichuan Peoples R China;

    Sichuan Univ Coll Elect &

    Informat Engn Inst Laser &

    Micro Nano Engn Chengdu 610064 Sichuan Peoples R China;

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

相似文献

  • 外文文献
  • 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