Photoluminescence of SrGdGa_3O_7∶RE (RE=Ce~(3+), Pr~(3+), Tb~(3+)) under VUV-UV Excitation

• 作 者: 张新民 梁宏斌 叶祥 陶冶 苏锵
• 机 构: State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical
• 出 处: Journal of Rare Earths
• 发表日期: 2005年03期
• 关键词: forbidden transitions allowed served Pr RE RE=Ce Tb

SrGdGa3O7∶RE (RE=Ce3+, Pr3+, Tb3+) were prepared by traditional solid-state reaction and their luminescence properties in the range of VUV-Vis were investigated. The two broad bands situated at about 177 and 217 nm in excitation spectra are attributed to the host lattices absorption, and they have no considerable change when doped different rare earth ions. The f-d transitions of Pr3+ and Tb3+ calculated by the formula gathered by Dorenbos were compared to the experimental results. The excitation spectra also show the sharp Gd3+ excitation line at about 274 nm pointing to an efficient energy transfer from Gd3+ to Pr3+ and Tb3+. All of the emission spectra present the characteristic emissions of rare earth ions when excited by VUV and UV.

SrGdGa3O7: RE (RE = Ce3 +, Pr3 +, Tb3 +) were prepared by traditional solid-state reaction and their luminescence properties in the range of VUV-Vis were investigated. The two broad bands situated at about 177 and 217 nm in excitation spectra are attributed The fd transitions of Pr3 + and Tb3 + calculated by the formula gathered by Dorenbos were compared to the experimental results. The excitation spectra also show the sharp Gd3 + excitation line at about 274 nm pointing to an efficient energy transfer from Gd3 + to Pr3 + and Tb3 +. All of the emission spectra present the characteristic emissions of rare earth ions when excited by VUV and UV.