吉林大学学报(理学版) ›› 2021, Vol. 59 ›› Issue (1): 143-147.

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980 nm激光激发下Yb/Er共掺杂氟化物纳米晶下转换发射特性

李雪双, 王哲, 刘馨然, 张嘉伟, 付鹏, 张帮萱, 郭星原   

  1. 吉林大学 物理学院, 长春 130012
  • 收稿日期:2020-03-12 出版日期:2021-01-26 发布日期:2021-01-26
  • 通讯作者: 郭星原 E-mail:guoxy@jlu.edu.cn

Downconversion Emission  Characteristics of Yb/Er Doped Fluoride Nanocrystals under 980 nm Irradition

LI Xueshuang, WANG Zhe, LIU Xinran, ZHANG Jiawei, FU Peng, ZHANG Bangxuan, GUO Xingyuan   

  1. College of Physics, Jilin University, Changchun 130012, China
  • Received:2020-03-12 Online:2021-01-26 Published:2021-01-26

摘要: 用高温热分解法制备摩尔分数为18%的Yb和摩尔分数为2%的Er共掺杂α-NaYF4, α-NaLuF4,β-NaYF4,β-NaLuF4和LiYF4氟化物纳米晶, 并用X射线衍射(XRD)、 透射电子显微镜(TEM)和光致发光光谱表征样品的晶体结构、 形貌和发光性能. 结果表明: 所制备的样品均为纯相; 不同的氟化物纳米晶样品尺寸均匀, 粒径为10~15 nm; 在980 nm近红外激光激发下,所制备的氟化物纳米晶在1 550 nm附近均有下转换发射, 其中β-NaLuF4∶Yb,Er纳米晶在1 550 nm处的发射最强.

关键词: 镱/铒, 氟化物, 纳米晶, 近红外, 下转换

Abstract: x(Yb)=18%,x(Er)=2% codoped α-NaYF4, α-NaLuF4,β-NaYF4,β-NaLuF44 and LiYF4 nanocrystals were synthesized by using high temperature thermal decomposition method. X\|ray diffraction (XRD), transmission electron microscopy (TEM) and photoluminescence spectroscopy were used to characterize the crystal structure, morphology and luminescence properties of the samples. The results show that all as-prepared samples are pure phase. The  size distribution of the as-prepared samples with a nearly spherical shape is about 10—15 nm.    The as-prepared samples exhibit emission at around 1 550 nm under the excitation of 980 nm  laser. Among them, β-NaLuF4∶Yb,Er has the strongest emission at the around of 1 550 nm.

Key words:  ytterbium/erbium; , fluoride; , nanocrystal; , near infrared; , downconversion

中图分类号: 

  • O482.31