Blue phosphor for fluorescent display and method for synthesizing the same
View Patent ↗Provided are a blue phosphor for a fluorescent display having a high luminous efficiency, and a method for synthesizing the same. The blue phosphor is obtained from a host composed of strontium carbonate (SrCO 3 ) and an activator composed of a cerium compound. The method for synthesizing the blue phosphor includes preparing a mixture having strontium carbonate (SrCO 3 ) and a cerium oxide (CeO 2 ) homogenously mixed according to the composition having the following general formula: SrCO 3 +xCeO 2 wherein 0.01≦x≦0.5, and annealing the mixture at 800 to 900° C.
1. A blue phosphor for a fluorescent display obtained from a host composed of strontium carbonate (SrCO 3 ) and an activator composed of a cerium compound.
2. The blue phosphor of claim 1 , wherein the cerium compound is a cerium oxide (CeO 2 ).
3. The blue phosphor of claim 1 , wherein the host and the activator are mixed in a molar ratio of 1:0.01˜1:0.5.
4. The blue phosphor of claim 2 , wherein the host and the activator are mixed in a molar ratio of 1:0.01˜1:0.5.
5. A method for synthesizing a blue phosphor for a fluorescent display, comprising:
(a) preparing a mixture having strontium carbonate (SrCO 3 ) and a cerium oxide (CeO 2 ) homogenously mixed therein; and
(b) heating the mixture.
6. The method of claim 5 , wherein in step (a), the strontium carbonate (SrCO 3 ) and the cerium oxide (CeO 2 ) are mixed according to the composition having the following general formula:
SrCO 3 +xCeO 2
wherein 0.01≦x≦0.5.
7. The method of claim 6 , wherein the strontium carbonate (SrCO 3 ) and the cerium oxide (CeO 2 ) are mixed in a molar ratio of 1:0.05.
8. The method of claim 5 , wherein in step (b), heating is performed at 800° C. to 900° C.
9. The method of claim 5 , wherein in step (b), heating is performed for 12 to 36 hours.