Effect of BaF2 powder addition on the synthesis of YAG phosphor by mechanical method

- YAG:Ce3+ phosphors were synthesized by mechanical method with the addition of BaF2.
- The YAG:Ce3+ phase was obtained at the maximum vessel temperature of 255 °C.
- YAG phosphor exhibited maximum internal quantum yield of 57%.

Here, we report on the effect of BaF2 powder addition on the mechanical synthesis of Ce3+-doped Y3Al5O12 (Y2.97Al5O12:Ce0.033+, YAG:Ce3+) phosphors for white light emitting diodes. The YAG phosphors were synthesized by the mechanical method using an attrition-type mill. When BaF2 was added at 6 wt% to the raw powder materials and milled, the synthesis of YAG:Ce3+ was favorably achieved at the vessel temperature of 255 °C, which was about 1200 °C lower than the YAG phosphor synthesis temperature by solid-state reaction. The synthesized YAG:Ce3+ phosphor revealed the maximum internal quantum yield of 57%.

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