Effect of co-doped metal caions on the properties of Y2O3:Eu3+ phosphors synthesized by gel-combustion method
Shi Hui†, , Zhang Xi-Yan‡, , Dong Wei-Li, Mi Xiao-Yun, Wang Neng-Li, Li Yan, Liu Hong-Wei
       

SEM photographs of Y2O3:Eu3+ (a) undoped and co-doped with cation powders of (b) Li+, (c) Na+, (d) K+, (e) Mg2+, and (f) Ca2+ cation powders.