Multiplication of electronic excitations in nanophosphors Lu2O3:Eu3 and Lu2O3:Tb3

作者：Makhov Vladimir N^*; Lushchik Cheslav; Lushchik Aleksandr; Kirm Marco; Wang Zhi Fang; Zhang Wei Ping; Yin Min; Zhao Jing Tai

来源：Journal of Luminescence, 2009, 129(12): 1711-1714.

DOI：10.1016/j.jlumin.2008.12.028

• Nanocrystals
• Multiplication of electronic excitations
• Surface losses
• Lu2O3

Luminescence properties of Lu2O3:Eu3 and Lu2O3:Tb3 nanocrystalline powders with the particle size varying from 46 to 6 nm were studied under excitation by synchrotron radiation in the photon energy range (up to similar to 22.5 eV) covering the region where the processes of multiplication of electronic excitation occur it was found that the excitation spectra of Tb3 emission from all Lu2O3:Tb3 nanopowders; have similar behavior, whereas the shape of the excitation spectra of Eu3 emission from Lu2O3:Eu3 nanopowders strongly depends on the particle size. The difference in the behavior of Lu2O3:Eu3 and Lu2O3:Tb3 nanophosphor systems was explained by different mechanisms of the energy transfer from the host to Eu3 or Tb3 ions (eith

• 出版日期2009-12
• 单位中国科学院上海硅酸盐研究所