欢迎访问《人工晶体学报》官方网站,今天是 2025年6月16日 星期一 分享到:

人工晶体学报 ›› 2017, Vol. 46 ›› Issue (9): 1691-1696.

• • 上一篇    下一篇

Na3ZrF7:Er/Yb纳米颗粒的合成及荧光性能研究

庾名槐;王广盛;叶帅;宋军;屈军乐   

  1. 深圳大学光电工程学院,光电子器件与系统教育部/广东省重点实验室,深圳518060;海南大学材料与化工学院,海口 570228;深圳大学光电工程学院,光电子器件与系统教育部/广东省重点实验室,深圳518060
  • 出版日期:2017-09-15 发布日期:2021-01-20
  • 基金资助:
    深圳市科技计划项目(JCYJ20150324141711561);国家自然科学基金青年项目(61605124)

Synthesis and Photoluminescence of Na3 ZrF7:Er/Yb Nanoparticles

YU Ming-huai;WANG Guang-sheng;YE Shuai;SONG Jun;QU Jun-le   

  • Online:2017-09-15 Published:2021-01-20

摘要: 采用热分解法制备多种核壳结构的Na3ZrF7:Er/Yb纳米颗粒,并对制备的上转换纳米颗粒的形貌、晶相以及发光特性进行研究.在980nm激发光激发下,与单核的Na3ZrF7:Er3+2;,Yb3+20;纳米颗粒相比,核壳结构的Na3ZrF7:Er3+2;,Yb3+20;@CaF2上转换纳米颗粒荧光强度提高了5倍.把Yb3+/Nd3+共掺的四方相NaYF4层包覆在Na3ZrF7:Er3+2;,Yb3+20;@CaF2纳米颗粒上,我们实现了Na3ZrF7@CaF2@NaYF4纳米颗粒在808nm激发下较强的上转换红光发射,发射光的红绿比在10左右,并对其发光机制作出了解释.

关键词: 上转换纳米颗粒;Na3ZrF7:Yb/Er;核壳结构;荧光强度

Abstract: In this paper, Na3ZrF7:Er/Yb nanoparticles (NPs) with core-shell structures were prepared by pyrolytic process , the morphologies , phase and emission spectra of all samples were analyzed .The emission intensity of the Na 3 ZrF7:Er3+2;, Yb3 +20;@CaF2 NPs was enhanced 5 times compared with that of Na3 ZrF7:Er3 +2;, Yb3 +20; under excitation of 980 nm.By coating the tetragonal Yb/Nd codoped NaYF4 on Na3 ZrF7:Er3 +2;, Yb3 +20;@CaF2 NPs, strongly upconverted red emissions of Na3 ZrF7@CaF2@NaYF4 NPs excited by an 808 nm laser were achieved , the red/green emission ratio approached a value of 10, the luminescence mechanism were elucidated .

Key words: In this paper, Na3ZrF7:Er/Yb nanoparticles (NPs) with core-shell structures were prepared by pyrolytic process , the morphologies , phase and emission spectra of all samples were analyzed .The emission intensity of the Na 3 ZrF7:Er3+2;, Yb3 +20;@CaF2 NPs was enhanced 5 times compared with that of Na3 ZrF7:Er3 +2;, Yb3 +20; under excitation of 980 nm.By coating the tetragonal Yb/Nd codoped NaYF4 on Na3 ZrF7:Er3 +2;, Yb3 +20;@CaF2 NPs, strongly upconverted red emissions of Na3 ZrF7@CaF2@NaYF4 NPs excited by an 808 nm laser were achieved , the red/green emission ratio approached a value of 10, the luminescence mechanism were elucidated .

中图分类号: