| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 850644 | Optik - International Journal for Light and Electron Optics | 2013 | 4 Pages |
Abstract
Cubic phase Lu2O3:Er3+/Yb3+ nanocrystal phosphors were prepared by sol–gel method. Fourier transform infrared (FT-IR) spectra were measured to evaluate the vibrational feature of the samples. Green and red radiations were observed upon 980 nm diode laser excitation. Laser power and Er3+ or Yb3+ doping concentration dependence of upconversion luminescence were studied to understand upconversion mechanisms. Excited state absorption, cross relaxation and energy transfer processes are the possible mechanisms for the visible emissions.
Keywords
Related Topics
Physical Sciences and Engineering
Engineering
Engineering (General)
Authors
Yong Li, Yan Pan,