Photoluminescence Characterization of Silicon Nanoparticles Hybridized Europium Complex
RAN Guang-Zhao1,3, BIAN Zu-Qiang2, LIU Shi-Feng1, HUANG Chun-Hui2, QIN Guo-Gang1,3
1School of Physics, State Key Laboratory for Mesoscopic Physics, Peking University, Beijing 100871
2Materials Chemistry and Applications, State Key Laboratory of Rare Earth, Peking University, Beijing 100871
3International Centre for Materials Physics, Chinese Academy of Sciences, Shenyang 110015
Photoluminescence Characterization of Silicon Nanoparticles Hybridized Europium Complex
RAN Guang-Zhao1,3;BIAN Zu-Qiang2;LIU Shi-Feng1;HUANG Chun-Hui2;QIN Guo-Gang1,3
1School of Physics, State Key Laboratory for Mesoscopic Physics, Peking University, Beijing 100871
2Materials Chemistry and Applications, State Key Laboratory of Rare Earth, Peking University, Beijing 100871
3International Centre for Materials Physics, Chinese Academy of Sciences, Shenyang 110015
Abstract： A europium complex Eu (DBM)3 TPPO (Eu tris(benzoylmethide)- (triphenylphosphine oxide)) and silicon nanoparticles have been hybridized. The hybridization can evidently change the photoluminescence (PL) characteristics of the Eu complex in the following aspects: under an excitation of 390nm, the intensity of the PL peak at 611nm due to the 5D0--7F2 transition of the Eu3+ ions has been increased by 30%, and the integrated PL intensity in the visible range has been increased by nearly 3 times; the PL excitation efficiency beyond 440nm has been improved evidently; the peak in the PL excitation spectrum shifts from 408 to 388nm, and the PL decay time decreases from 2.07 to 0.96μs. The experimental results indicate that in the PL process, the photoexcited energy may transfer from the silicon nanoparticles to the Eu3+ ions.
2004, Vol. 21 
