Luminescence Properties of GdOBr:Tb Green Phosphors

Abstract

doped gadolinum oxybromide phosphors were synthesized by solid-state reaction. The GdOBr:Tb phosphor showed two intense emission bands, corresponding to and transition with the concentration. The luminescent properties of GdOBr:Tb phosphor were investigated by photoluminescence. To investigate the multipolar interaction scheme between ions, the decay behavior was analyzed using direct quenching. The energy interaction type of GdOBr:Tb phosphor was dipole-quadrupole interaction. In addition, the critical distance value for energy transfer was calculated by the decay curve fitting parameter from the Inokuti-Hirayama equation. Cathodoluminescent emission spectra were compared with industrially manufactured green phosphors. © 2003 The Electrochemical Society. All rights reserved.