| 简介 |
PROBLEM TO BE SOLVED : To provide a phosphor suitable for a visible illuminant, including a white LED phosphor which uses blue LED as an illuminant, and conventionally, an oxide series phosphor has generally over 400 nm and greatly decreases excitation spectrum intensity, and in white LED coated an InGaN series blue LED(light emission diode) ship with a YAG series fluophor, an excitation peak of the fluophor does not effectively lap on a light emission peak of the blue LED and locates in a short wavelength side, resultingly, in a white LED manufacture with high luminance, the phosphor has not good excitation efficiency. SOLUTION : The phosphor comprising an oxynitride glass matrix comprises CaCO3 of 20-50 mol% (in terms of CaO), Al2O3 of 0-30 mol%, SiO of 25-60 mol%, AlN of 5-50 mol%, and a rare earth oxide or a transition metallic oxide of 0.1-20 mol% (the sum of the five components is 100 mol%). A content of nitrogen is <=15%. Another rare earth element ion of 0.1-10 mol% (in terms of an oxide) may be contained on fluorescent glass as a coactivating agent. |
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