RF 열플라즈마를 이용한 Y2O3: Eu 3+ 적색 나노 형광체 분말 합성

초록

Y2O3 : Eu3+ is an excellent red-emitting phosphor, which has been widely used for display devices due to highly luminescent property and chemical stability. In this study, Y2O3 : Eu3+ red phosphors were prepared using the solid state reaction and RF thermal plasma synthesis. The particle size of Y2O3 : Eu3+ phosphors obtained by the solid state reaction varied from 10 to 20 mu m, and 30 similar to 100 nanometer sized Y2O3 : Eu3+ particles were obtained from a liquid form of raw material through RF thermal plasma synthesis without an additional heat treatment. Photoluminescence measurements of the obtained Y2O3 : Eu3+ particles showed a red emission peak at 611 nm (D-5(0) -> F-7(2)). PL intensity of red nano phosphors prepared by RF thermal plasma synthesis was comparable to that of red phosphors prepared by the solid state reaction, indicating that nano-sized Y2O3 : Eu3+ red phosphors could be successfully synthesized using one-step process of RF thermal plasma.

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