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Synthesis and Spectroscopic Properties of GdAl3(BO3)4 Poly-crystals Codoped with Yb3+ and Eu3+
| Content Provider | Semantic Scholar |
|---|---|
| Author | Yang, Cheng Hao Yang, Guo Feng Pan, Yonggang Zhang, Qing Yin |
| Copyright Year | 2008 |
| Abstract | GdAl3(BO3)4 polycrystals co-doped with Yb3+ and Eu3+ has been synthesised by combustion method with urea. Upon the excitation at 465 nm (Eu3+/7F6 → 5D2 transition), emission bands centered at 590, 613, 697 and 702 nm in the wavelength region of 550–750 nm have clearly been observed, assigned to the electronic transitions of 5D0 → 7FJ (J = 1, 2, 4 and 5) of Eu3+ ions, respectively. Meanwhile, an intense emission centred at 980 nm along with a shoulder at 1,040 nm has also been observed by exploiting a cross-relaxation process between the transitions of Eu3+/5D0 → 7F6 and Yb3+/2F7/2 → 2F5/2. On the contrary, an intense red up-conversion emission centred at 613 nm originated from the 5D0 → 7F2 transition of Eu3+ has been observed upon excitation with 980 nm laser diode. The quadratic dependence of the red up-conversion intensity on the pump-laser power reveals a cooperative energy transfer mechanism from a pair of Yb3+ ions to one Eu3+ ion. |
| Starting Page | 105 |
| Ending Page | 109 |
| Page Count | 5 |
| File Format | PDF HTM / HTML |
| DOI | 10.1007/s10895-008-0389-z |
| Alternate Webpage(s) | http://lib.fibopt.ru/Articles/Bi/JFluoresc_2009_19_1_105.pdf |
| PubMed reference number | 18594951 |
| Alternate Webpage(s) | https://doi.org/10.1007/s10895-008-0389-z |
| Journal | Medline |
| Volume Number | 19 |
| Journal | Journal of Fluorescence |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
