Method of preparing nano-level sphere cerium activated yttrium aluminum garnet phosphor powder |
Title： |
| Method of preparing nano-level sphere cerium activated yttrium aluminum garnet phosphor powder |
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Application Number： |
200710118422 |
Application Date： |
2007/07/05 |
Announcement Date： |
2007/11/28 |
Pub. Date： |
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Publication Number： |
101077974 |
Announcement Number： |
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Grant Date： |
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Granted Pub. Date： |
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ApplicationType： |
Invention |
State/Country： |
11[] |
IPC： |
C09K 11/80 |
Applicant(s)： |
Tsinghua University |
Inventor(s)： |
Huang Yong, Guo Rui, Zeng Renjie, Wu Yin |
Key Words： |
phosphor powder, nano-level, cerium, yttrium, garnet |
Abstract： |
The present invention belongs to the field of composite RE oxide as light emitting material, and is process of preparing nanometer level spherical Ce activated YAG phosphor. The process includes the reaction between the transparent oil phase emulsion comprising oil phase material, surfactant and co-surfactant and the aqueous phase liquid comprising reactant solution or precipitant solution in the volume ratio of 1 to (0.1-1) in the micro emulsion drop serving in W/O micro emulsion system as the nanometer micro reactor to obtain the precipitate, washing the precipitate, suction filtering, drying and calcining to obtain nanometer level spherical YAG:Ce phosphor with high dispersivity. The process is simple, low in power consumption, environment friendly, low in cost and suitable for industrial production, and the YAG:Ce phosphor has high luminous intensity and light emitting efficiency. |
Claim： |
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PCT： |
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