| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1494984 | Optical Materials | 2011 | 5 Pages |
Abstract
We demonstrate the upconversion-photoluminescence spectra of Er3+, 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.
Research highlights► Single green and red emissions are obtained in Er3+/Yb3+/Li+:ZrO2 nanocrystals. ► Upconversion intensities of green and red emissions increase by doping Li+. ► Effects of Li+ are discussed by rate equation model.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Lu Liu, Yuxiao Wang, Xueru Zhang, Kun Yang, Yunfeng Bai, Chuanhai Huang, Wanlei Han, Chunlei Li, Yinglin Song,