Abstract
Abstract— ZnGa2O4:Mn powder phosphors were synthesized by a conventional combustion method. Synthesis conditions such as heat‐treatment temperature, heat‐treatment time, reduction conditions, and activator concentrations were optimized to obtain the maximum intensity of photoluminescence (PL). Then, ZnGa2O4 Mn powder phosphors were mixed with metal oxides WO3 or V2O5, which may modify the surface properties of the phosphors. It was observed that the cathodoluminescence of the phosphor screen was increased up to 20% compared to untreated phosphors. Possible mechanisms are discussed based on the electron‐transport phenomena in the phosphor. Also, a method to enhance the low‐voltage efficiency of ZnGa2O4:Mn phosphors will be proposed based on the aforementioned mechanism.
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