Yb3+/Er3+ codoped NaYF4 microrods: synthesis and tuning of multicolor upconversion.
发布时间：2024-08-09
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- 所属单位：
- 理学院
- 发表刊物：
- Journal of Alloys and Compounds
- 关键字：
- 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
- 摘要：
- 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.
- 备注：
- 高当丽 SCI 二区 影响影子 2.726
- 合写作者：
- 张翔宇,郑海荣,高伟,何恩节
- 第一作者：
- 高当丽
- 论文类型：
- 期刊论文
- 卷号：
- 卷：554
- 期号：
- 期：
- 页面范围：
- 页：395–399
- 是否译文：
- 否
- 发表时间：
- 2013-03-01