Photoluminescence of ZnGa2O4 mixed with InGaZnO4

InGaZnO4 is considered to be a better conductive transparent oxide than In2O3 for ZnGa2O4 blue phosphor applications in field emission displays. The photoluminescence of ZnGa2O4 peak at 432 nm does not decrease nor shift under the presence of InGaZnO4 up to a couple of percent in the powder mixture. InGaZnO4 goes through phase transformation to ZnGa2O4 by annealing it under a reducing atmosphere.