Synthesis and luminescence properties of europium doped YBa3B9O18

Europium (Eu3+) doped YBa3B9O18 were synthesized by conventional solid state solidification methods. (Y1−xEux)Ba3B9O18 formed solid solutions in the range of x=0-1.0. The luminescence property measurements upon excitation in ultraviolet-visible range show well-known Eu3+ excitation and emission. The charge transfer excitation band of Eu3+ dominates the excitation spectra. The emission spectrum of Eu3+ ions consists mainly of several groups of lines in the 550-720 nm region, due to the transitions from the 5D0 level to the levels 7FJ (J=0, 1, 2, 3, 4) of Eu3+ ions. The dependence of luminescence intensity on Eu3+ concentration shows no concentration quenching for fully concentrated EuBa3B9O18. Eu3+ doped YBa3B9O18 are promising phosphors for applications in displays and optical devices.