| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5403683 | Journal of Luminescence | 2008 | 6 Pages |
Abstract
In this paper, green and red up-conversion emissions of Er3+-Yb3+ co-doped TiO2 nanocrystals were reported. The phase structure, particle size and optical properties of Er3+-Yb3+ co-doped TiO2 nanocrystals samples were characterized by using X-ray diffraction (XRD), transmission electron microscopy (TEM), UV-vis-NIR absorption spectra and photoluminescence (PL) spectra. Green and red up-conversion emissions in the range of 520-570Â nm (2H11/2, 4S3/2â4I15/2) and 640-690Â nm (4F9/2â4I15/2) were observed for the Er3+-Yb3+ co-doped TiO2 nanocrystals. The visible up-conversion mechanism and temperature dependence of up-conversion emission for Er3+ in TiO2 nanocrystals were discussed in detail.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Qingkun Shang, Hui Yu, Xianggui Kong, Hongdan Wang, Xin Wang, Yajuan Sun, Youlin Zhang, Qinghui Zeng,