...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Applied physics >Photoluminescence characteristics and energy transfer between Bi~(3+) and Eu~(3+) in Gd_2O_3: Eu~(3+), Bi~(3+) nanophosphors
【24h】

Photoluminescence characteristics and energy transfer between Bi~(3+) and Eu~(3+) in Gd_2O_3: Eu~(3+), Bi~(3+) nanophosphors

机译：Gd_2O_3中Bi〜（3+）和Eu〜（3+）之间的发光特性和能量转移：Eu〜（3 +），Bi〜（3+）纳米磷光体

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

Bi~(3+) and Eu~(3+) codoped cubic Gd_2O_3 nanocrys-tals were prepared by the Pechini sol-gel method. Their pho-toluminescent properties were investigated under ultraviolet light excitation. The introduction of Bi~(3+) ions broadened the excitation band of Eu~(3+) emission, of which a new strong band occurred ranging from 320 to 380 nm due to the 6s~2→ 6s6p transition of Bi~(3+) ions, implying a very efficient energy transfer from Bi~(3+) ions to Eu~(3+) ions. Upon 325 and 355 nm light excitation, the luminescent intensity of Eu~(3+) ions was remarkably improved by the incorporation of Bi~(3+) ions. But a significant quenching of Eu~(3+) emission was observed under 266 nm light excitation when Bi~(3+) was codoped. The possible energy transfer processes between Bi~(3+) and Eu~(3+) were discussed. The decay curves of Eu~(3+) emission under the excitation of 266 nm pulsed laser were measured and gave further evidence for our discussion.
机译：采用Pechini溶胶-凝胶法制备了Bi〜（3+）和Eu〜（3+）共掺杂的立方Gd_2O_3纳米晶。在紫外光激发下研究了它们的光致发光性能。 Bi〜（3+）离子的引入拓宽了Eu〜（3+）发射的激发带，由于Bi〜（3）的6s〜2→6s6p跃迁，其中一个新的强谱带出现在320至380 nm范围内+）离子，这意味着从Bi〜（3+）离子到Eu〜（3+）离子的能量转移非常有效。在325和355 nm的光激发下，掺入Bi〜（3+）离子显着提高了Eu〜（3+）离子的发光强度。但是，当Bi〜（3+）被共掺杂时，在266nm的光激发下，Eu〜（3+）的发射发生了明显的猝灭。讨论了Bi〜（3+）和Eu〜（3+）之间可能的能量转移过程。测量了266nm脉冲激光激发下Eu〜（3+）发射的衰减曲线，为我们的讨论提供了进一步的证据。

著录项

  • 来源
    《Applied physics》 |2010年第4期|P.763-768|共6页
  • 作者

    X.T. Wei; Y.H Chen; X.R. Cheng; M. Yin; W. Xu;

  • 作者单位

    Department of Physics, University of Science and Technology of China, Hefei 230026, China;

    rnDepartment of Physics, University of Science and Technology of China, Hefei 230026, China;

    rnDepartment of Physics, University of Science and Technology of China, Hefei 230026, China;

    rnDepartment of Physics, University of Science and Technology of China, Hefei 230026, China;

    rnDepartment of Physics, University of Science and Technology of China, Hefei 230026, 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

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