Effects of Bi 3+ doping on the optical properties of Er 3+:Y 2O 3

Abstract

The influences of Bi 3+ doping on the optical properties of Er 3+:Y 2O 3 are investigated under UV and IR excitations. The emission intensity of Er 3+ is remarkably enhanced by the introduction of Bi 3+ under both two excitations. The emission enhancement under UV excitation originates from the energy transfer from Bi 3+ to Er 3+, while under IR excitation it can be attributed to the modification of the local crystal field around the Er 3+.