Abstract
We demonstrate the upconversion-photoluminescence spectra of Er 3+, Yb3+ and Li+ ions doped ZrO2 nanocrystals. By introducing Li+, emission intensities of single green and single red band increase by a factor of 1.93 and 1.65, respectively. Powder X-ray diffraction data and decreased slopes of the excitation power dependences on upconverted emission intensities give evidences that Li + ions can tailor the local structure of host lattice and improve energy transfer processes from Yb3+ to Er3+, respectively.
| Original language | English |
|---|---|
| Pages (from-to) | 1234-1238 |
| Number of pages | 5 |
| Journal | Optical Materials |
| Volume | 33 |
| Issue number | 8 |
| DOIs | |
| State | Published - Jun 2011 |
Keywords
- Enhancement
- Nanocrystals
- Upconversion
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