Department of Chemistry, Harbin Institute of Technology, Harbin, China.
Opt Lett. 2013 Jul 15;38(14):2535-7. doi: 10.1364/OL.38.002535.
The temperature dependence of upconversion luminescence in Ho3+/Yb3+/Tm3+ tri-doped LiNbO3 single crystal was studied at different temperatures from 289 to 773 K under 980 nm excitation. The tri-doped LiNbO3 single crystal offers temperature-dependent color tuning properties, and the white-light emission can be obtained by simply tuning the temperature. In addition, the competition between nonradiative transition and thermal population plays an important role in the upconversion process with temperature increase. This research has implications in the extension of research for optical temperature sensors and multicolor variable temperature display materials.
在 980nm 激发下，研究了不同温度（289-773K）下 Ho3+/Yb3+/Tm3+三掺杂 LiNbO3 单晶中上转换发光的温度依赖性。三掺杂 LiNbO3 单晶具有温度相关的颜色调谐特性，通过简单地调节温度即可获得白光发射。此外，随着温度的升高，非辐射跃迁和热布居之间的竞争在上转换过程中起着重要作用。这项研究对光学温度传感器和多色变温显示材料的研究具有重要意义。
