Red phosphor for fluorescent display and preparation method thereof

A preparation method of a phosphor for a fluorescent display having a formula of:

• SrTi1−x−yMxNyO3:zPr3+
• wherein M represents a divalent transition metal selected from the group consisting of Zn, Mn, Co, Ni, Cu and Cd,
• wherein N represents a trivalent metal selected from the group consisting of Ga, Al, In and B, and
• wherein 0<x≦0.1, 0<y≦0.1,
• said preparation method comprising the steps of:
• (a) adding strontium carbonate or strontium oxide, titanium oxide of at least one divalent transition metal selected from the group consisting of Zn, Mn, Co, Ni, Cu and Cd, oxide of at least one trivalent metal selected from the group consisting of Ga, Al, In, and B, praseodymium (Pr) oxide or praseodymium salt, and mixing the resulting material homogeneously in the solvent;
• and
• (b) firing the mixture.

A method of preparing a phosphor for a fluorescent display, comprising:

• obtaining strontium carbonate;
• titanium oxide of at least one divalent transition metal selected from the group consisting of Zn, Mn, Co, Ni, Cu and Cd;
• oxide of at least one trivalent metal selected from the group consisting of Ga, Al, In, and B;
• and praseodymium (Pr) oxide or praseodymium salt in water;
• mixing a resulting material in an alcohol solvent;
• and
• firing the mixture to produce a phosphor having a formula of:
• SrTi1−x−yMxNyO3:zPr3+
• wherein M represents a divalent transition metal selected from a group consisting of Zn, Mn, Co, Ni, Cu and Cd;
• N represents a trivalent metal selected from a group consisting of Ga, Al, In and B;
• and 0<x≦0.1, 0<y≦0.1 and 0≦z≦0.1.