Abstract
Eu 3+ activated trigadolinium gallate, Gd 3GaO 6:Eu, was successfully synthesized using various aqueous solutions via ultrasonic spray pyrolysis. The corresponding phosphors illuminated an efficient red emission under Hg-discharge condition with enhanced color purity, which is related to prominent peaks centered at 615 and 629 nm induced by the electric dipole transition of 5D 0 → 7F 2 of Eu 3+. By using a proper Ga source for aqueous solution, especially gallium sulfate, uniformly distributed Gd 3GaO 6:Eu 3+ phosphor with controlled morphology and enhanced emission efficiency was obtained.
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