Author/Authors :
Shi، نويسنده , , Qiufeng and You، نويسنده , , Fangtian and Huang، نويسنده , , Shihua and Peng، نويسنده , , Hongshang and Huang، نويسنده , , Yan and Tao، نويسنده , , Ye، نويسنده ,
Abstract :
The role of Tb3+ ions, with respect to efficient energy transfer, on sensitization of Gd3+ ions in (La,Gd)PO4 has been investigated. A series of Tb3+ doped (La, Gd)PO4 were characterized by steady state spectroscopy and efficient energy transfer from Tb3+ 4f75d to Gd3+ 4f7 states was observed. The decay curves of Gd3+ 6P7/2 and Tb3+ 5D3, 5D4 states upon Tb3+ 4f75d and Gd3+ 6IJ states excitation were also performed to reveal the energy transfer processes. With the increase of Gd3+ concentration, the energy transfer efficiency increase accordingly. Based on steady state spectra, around 73% energy transfer efficiency in Gd0.99Tb0.01PO4 was determined.
