...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Optical Materials >Synthesis via interfacial precipitation, color-tunable photoluminescence and improved thermal stability of (Ce_(1-c)Tb_x)PO_4 (x = 0-1) microspheres by energy transfer
【24h】

Synthesis via interfacial precipitation, color-tunable photoluminescence and improved thermal stability of (Ce_(1-c)Tb_x)PO_4 (x = 0-1) microspheres by energy transfer

机译：通过能量转移通过界面沉淀，颜色可调的光致发光和改善（Ce_（1-c）Tb_x）PO_4（x = 0-1）微球的热稳定性进行合成

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

A series of well-dispersed (Ce1-xTbx)PO4 (x = 0-1) microspheres, with an average diameter of similar to 1.2 mu m, have been originally prepared via two-phase interfacial precipitation and subsequent calcination. Characteristics of the as-synthesized and calcination products were investigated by the combined techniques of XRD, FE-SEM, TEM, FT-IR and TG-DSC. Under 275 nm excitation, tuning the emission color from blue (0.17, 0.02) to green (0.30, 0.56) was realized via varying the Tb3+ content and through Ce3+ -> Tb3+ energy transfer. The optimal content of Tb3+ was found to be similar to 15 at% (x = 0.15), and the energy transfer was determined to occur via electric dipole-dipole interaction. Moreover, both the emissions of Ce3+ and Tb3+ present gradually higher thermal stability with increasing Tb3+ content owing to enhanced energy transfer. The (Ce0.85Tb0.15)PO4 microspheres, which possess the highest absolute quantum efficiency (similar to 60.1%) across the series and excellent thermal stability (activation energy for thermal quenching of luminescence: similar to 0.312 eV), may potentially serve as a single-phase green phosphor for solid-state lighting and field-emission display.
机译：最初通过两相界面沉淀和随后的煅烧制备了一系列平均直径近似于1.2微米的分散良好的（Ce1-xTbx）PO4（x = 0-1）微球。通过XRD，FE-SEM，TEM，FT-IR和TG-DSC的综合技术研究了合成和煅烧产物的特性。在275 nm激发下，通过改变Tb3 +含量并通过Ce3 +-> Tb3 +能量转移，实现了将发射颜色从蓝色（0.17，0.02）调整为绿色（0.30，0.56）。发现Tb3 +的最佳含量接近15 at％（x = 0.15），并且确定了通过电偶极-偶极相互作用发生了能量转移。此外，由于增强的能量转移，随着Tb3 +含量的增加，Ce3 +和Tb3 +的排放物都呈现出逐渐更高的热稳定性。 （Ce0.85Tb0.15）PO4微球具有最高的绝对量子效率（约60.1％），并且具有出色的热稳定性（发光的热猝灭活化能：约0.312 eV），有可能用作用于固态照明和场发射显示的单相绿色磷光体。

著录项

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