| 摘要 |
Methods for producing metal/metalloid oxide particles comprise rare earth metals herein include reacting a reactant stream in a gas flow. The reactant stream includes a rare earth metal precursor and an oxygen source. A collection of particles comprising metal/metalloid oxide have an average particle size from about 15 nm to about 1 micron. The metal/metalloid oxide comprises a non-rare earth metal oxide wherein less than about 25 percent of a non-rare earth metal is substituted with a rare earth metal. The metal/metalloid oxide particles can be reacted with H<SUB>2</SUB>S or C<SUB>2</SUB>S to form corresponding metal/metalloid sulfide particles. The metal/metalloid sulfide particles can be doped with rare earth metals. The particles are useful as phosphors, for example for use in displays.
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