Yin Min, Lou Liren, Zhang Weiping, Xia Shangda, Jean-Claude Krupa. INVESTIGATION ON ENERGY TRANSFER BETWEEN THE TWO SITES IN NANOCRYSTALLITES X<sub>1</sub>-Y<sub>2</sub>SiO<sub>5</sub>:Eu[J]. Chinese Journal of Luminescence, 1998,19(3): 216-220
Yin Min, Lou Liren, Zhang Weiping, Xia Shangda, Jean-Claude Krupa. INVESTIGATION ON ENERGY TRANSFER BETWEEN THE TWO SITES IN NANOCRYSTALLITES X<sub>1</sub>-Y<sub>2</sub>SiO<sub>5</sub>:Eu[J]. Chinese Journal of Luminescence, 1998,19(3): 216-220DOI:
:Eu were recorded at 15K using site selective excitation by a dye laser. The results show that there is a pronounced energy transfer from site 21 and the transfer rates increases with increasing of Eu
3+
concentration. The fluorescent lifetimes of the two sites were also measured as a function of concentration. As expected
we found that the lifetimes of site 2 decreases with increasing concentration. Decay curve measurement of site 1 under exciting site 2 revealed the transfer process directly. The mechanism of the energy transfer is discussed.