Synthesis and characterization of Y 2 O 3 : Eu 3+ red nano phosphor powders using RF thermal plasma

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, red phosphors were prepared using the solid state reaction and RF thermal plasma synthesis. The particle size of phosphors obtained by the solid state reaction varied from 10 to , and 30~100 nanometer sized 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 particles showed a red emission peak at 611 nm (). 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 red phosphors could be successfully synthesized using one-step process of RF thermal plasma.