Novel Phosphors of Eu3+ or Sm3+ Doped Li6Lu(BO3)(3) for X- Ray Imaging

作者：Oh Myeongjin^*; Kim H J; Fawad U; Park H; Kim Sunghwan

来源：IEEE Transactions on Nuclear Science, 2013, 60(2): 1006-1010.

DOI：10.1109/TNS.2013.2240011

• Eu3+
• Li6Lu(BO3)(3)
• Phosphor
• Sm3+
• X-ray imaging

Li6Lu(BO3)(3):Eu3+ and Li6Lu(BO3)(3):Sm3+ are produced by solid state reaction. We have synthesized and characterized the luminescence of their properties for the first time. Firstly, we confirmed the structure and shape of Li6Lu(BO3)(3):Eu3+, Sm3+ phosphor using X-ray diffraction. Secondly, we optimized doping concentrations of activators. The lithium lutetium borate has a high effective atomic number (Z(eff) = 52) and the molecular weight is 393 g/mol. Hence, it is considered that the efficiency of absorption is high in comparison to that of commonly used phosphor in X- ray imaging. %26lt;br%26gt;Additionally, Li6Lu(BO3)(3):Eu3+ and Li6Lu(BO3)(3):Sm3+ emit a luminescence of the red region that are well matched with CCDs in terms of quantum efficiency. Furthermore, host material involves a large amount of lithium and boron. The neutron interacts with these materials. Consequently Eu3+ or Sm3+ doped Li6Lu(BO3)(3) phosphor can be a good candidate not only for X-ray imaging in medical fields but also for neutron detection imaging in various industrial fields.

• 出版日期2013-4