Photoluminescence of Ce, Pr and Tb activated Sr3Ln(PO4)3 under VUV-UV excitation |
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| Authors: | Hongbin Liang Ye Tao Hong He Wenxuan Chen Qiang Su |
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| Institution: | a State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, Guangdong 510275, People's Republic of Chinab Laboratory of Beijing Synchrotron Radiation, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039, People's Republic of Chinac Key Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, People's Republic of China |
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| Abstract: | The spectroscopic properties in VUV-Vis range for the eulytite structural phosphors Sr3Gd(PO4)3:Ln3+ (Ln3+=Ce3+, Pr3+, Tb3+), Sr3Ce(PO4)3, Sr3Gd(PO4)3 and Sr3Tb(PO4)3 were investigated. The bands near 170 nm in VUV excitation spectra are assumed to connect with the host lattices related absorption. The f-d transitions of Ce3+, Pr3+ and Tb3+ in the host lattices are assigned and corroborated. A convenient experiment formulation on the relationship between the lowest f-d transition energies and n value for trivalent 4fn-series rare earth ions in these host lattices is applied. |
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| Keywords: | Luminescence Eulytite Lanthanide Rare earth Phosphates |
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