Energy transfer to Pr3+ ions in Pr:Lu3 Al 5O12 (LuAG) single crystals

A. Yoshikawa, K. Kamada, F. Saito, H. Ogino, M. Itoh, T. Katagiri, D. Iri, M. Fujita

研究成果: Article査読

15 被引用数 (Scopus)


Single crystals of LuAG doped with Pr3+ ions (0.2 mol%) are grown by the micro-pulling-down (μ-PD) method with an RF heating system. The as-grown crystals are confirmed to be of garnet-type structure with the space group of Ia3d (230). The emission-excitation spectra and luminescence decay kinetics are measured in the temperature range of 5-310 K by using synchrotron radiation as an exciting light source. The intrinsic luminescence is observed at 250 nm at low temperatures. Four emission bands at 308, 325, 360, and 380 nm are ascribed to the 5d- > 4f transitions of Pr 3+ ions. From the decay kinetics measurements, it is pointed out that there exist two kinds of energy transfer mechanisms from the host LuAG lattice to the Pr 3+ ions. The mechanisms of energy transfer are discussed in connection with the formation of substitution-type defects.

ジャーナルIEEE Transactions on Nuclear Science
出版ステータスPublished - 2008 6

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学
  • 原子力エネルギーおよび原子力工学
  • 電子工学および電気工学


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