Synthesis and luminescence properties of Eu or Tb doped Lu 2O 3 square nanosheets

Abstract

We successfully synthesized the large-scale and uniform rare earth (Eu or Tb) doped lutetium compounds with square nanosheets using the doped Lu(OH) 3 colloidal precursors by the hydrothermal method without any catalysts or templates at 140 °C and pH 13–14 for 24 h. The as-synthesized nanosheets have square shape morphology with the side lengths of 200–400 nm and thickness of ∼40 nm. We deduced a mechanism of “side wrapping” to describe the growth of the square nanosheets. The doped Lu 2O 3 phosphors with square nanosheets have been synthesized by a thermal decomposition method at 900 °C for 2 h using doped lutetium compounds as precursors.