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Luminescent properties of RE-activated CaAl2B2O7 (RE=Tb, Ce) in VUV-visible region |
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| Authors: | Hucheng Yang Chengyu Li Hong He Zeming Qi |
| Institution: | a Key Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, PR China b Graduate School of the Chinese Academy of Sciences, PR China c NSRL, University of Science and Technology of China, Hefei, Anhui 230026, PR China d State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou, Guangdong 510275, PR China |
| Abstract: | RE3+-activated α- and β-CaAl2B2O7 (RE=Tb, Ce) were synthesized with the method of high-temperature solid-state reaction. Their VUV excitation and VUV-excited emission spectra are measured and discussed in the present article. The charge transfer band of Tb3+ and Ce3+ is respectively calculated to be at 151±2 and 159±3 nm. All the samples show an activator-independent excitation peak at about 175 nm and an emission peak at 350-360 nm ascribed to the host absorption and emission band, respectively. |
| Keywords: | Rare-earth ions Luminescence VUV CaAl2B2O7 |
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