Liu Bian

Synthesis and luminescence properties of europium activated Ca3Al2O6-Sr3Al2O6 system

Abstract Divalent europium activated tristrontium dialuminum hexaoxide phosphor, (Sr 1- x Eu x ) 3 Al 2 O 6 , was obtained by solid state reaction. Crystal structure and luminescence properties of synthesized (Sr 1- x Eu x ) 3 Al 2 O 6 were investigated. The major excitation band of (Sr 1- x Eu x ) 3 Al 2 O 6 located in blue light region, the photoluminescence spectrum showed red light emission peaked at 618 nm which could be attributed to the d-f transition of the Eu 2+ . The influence of Ca 2+ substitution for Sr 2+ on structural and luminescence properties of Eu 2+ doped Sr 3 Al 2 O 6 was also studied. The photoluminescence peak position of (Sr 1- y Ca y ) 2.94 Eu 0.06 Al 2 O 6 varied from 618 to 655 nm with increasing y value. The reason for redshift in the emission band of (Sr 1- y Ca y ) 2.94 Eu 0.06 Al 2 O 6 phosphor was also discussed.