Yb3+/Er3+ codoped NaYF4 microrods: synthesis and tuning of multicolor upconversion.
Release time:2024-08-09
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- Affiliation of Author(s):
- 理学院
- Journal:
- Journal of Alloys and Compounds
- Key Words:
- 中文关键字：多色发射；上转换；微米晶体；合成；调控，英文关键字：multicolour; upconversion; microcrystals; synthesi
- Abstract:
- A series of NaYF4 microrods doped with Yb3+Er3+ have been successfully synthesized through a facile hydrothermal method. The fluoride microcrystals have been characterized by XRD, SEM, and the photoluminescence spectra method. The upconversion spectra show that the output light colour have been tuned from green to red under near infrared excitation at 977 nm when replacing Y3+ ions with a different amount of Yb3+ in NaYF4:Yb/Er microcrystals. The effect of the intrinsic structural feature of fluoride compounds and four external factors, namely the concentration of Yb3+, the concentration of Er3+, the particle size and the use of an organic additive (EDTA), on the ultimate output light color of samples are investigated detailedly. The results show that the output light color is more sensitive to the concentration of Yb3+ than that of Er3+. When elevated the concentration of dopants (Er3+ or Yb3+) in the NaYF4 host lattice, the cross-relaxation process derived from Er3+ promoted the red emission and quenched the green emission.
- Note:
- 高当丽 SCI 二区 影响影子 2.726
- Co-author:
- 张翔宇,郑海荣,高伟,何恩节
- First Author:
- Dangli Gao
- Indexed by:
- Journal paper
- Volume:
- 卷：554
- Issue:
- 期：
- Page Number:
- 页：395–399
- Translation or Not:
- no
- Date of Publication:
- 2013-03-01