Continuous synthetic process of phosphor in supercritical water and apparatus being used therein
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United States of America Patent
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Issued Date -
May 11, 2006
app pub date -
Nov 10, 2005
filing date -
Nov 11, 2004
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Abandoned
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Abstract
The present invention relates to a method of continuously producing a phosphor at a supercritical water (SCW) condition and an apparatus used in the method. A phosphor produced according to the method of the present invention has similar luminosity to a phosphor produced according to a conventional solid-state method and the size and shape of particles thereof is also uniform. Accordingly, a phosphor according to the method of the present invention is applicable in various fields such as plasma display (PDP) and field emission display (FED). Also, in the method of producing a phosphor according to the present invention, the total reaction time is within about one minute, which is shorter than in the solid-state method. Also, since a separate heat processing process is not needed to obtain crystallized particles, it is efficient in aspects of time and energy.
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