发明名称 |
NON STOICHIOMETRIC TETRAGONAL COPPER ALKALINE EARTH SILICATE PHOSPHORS AND METHOD OF PREPARING THE SAME |
摘要 |
Disclosed are non stoichiometric Copper Alkaline Earth Silicate phosphors activated by divalent europium for using them as high temperature stable luminescent materials for ultraviolet or daylight excitation. The phosphors are represented as the formula (BauSrvCawCux)3.y (Zn,Mg,Mn)zSii+b05+2b:Eua. The nonstoichiometric tetragonal silicate is prepared in a high temperature solid state reaction with a surplus of silica in the starting mixture. Furthermore, luminescent tetragonal Copper Alkaline Earth Silicates are provided for LED applications, which have a high color temperature range from about 2,00OK to 8,000K or 10,000K showing a CRI with Ra=80~95, when mixed with other luminescent materials.
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申请公布号 |
WO2009025469(A3) |
申请公布日期 |
2009.04.16 |
申请号 |
WO2008KR04733 |
申请日期 |
2008.08.14 |
申请人 |
SEOUL SEMICONDUCTOR CO., LTD.;TEWS, WALTER;ROTH, GUNDULA;LEE, CHUNG HOON;TEWS, STEFAN |
发明人 |
TEWS, WALTER;ROTH, GUNDULA;LEE, CHUNG HOON;TEWS, STEFAN |
分类号 |
C09K11/55;C09K11/08;C09K11/59;H01L33/00;H01L33/50 |
主分类号 |
C09K11/55 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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