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发明公开
CN102832328A 一种白光LED及其制备方法 有权 转让

一种白光LED及其制备方法
摘要：
本发明提供一种白光LED及其制备方法。采用LED芯片发光激发荧光陶瓷，产生白光，所述的荧光陶瓷为多晶Re:YAG陶瓷，其中稀土元素Re选自Ce、Eu、Er、Nd、Tb、Sm、Dy、Tm或Yb，掺杂量为0.005到10wt.%。本发明利用Re:YAG荧光陶瓷的具有高热导率、高化学稳定性与结晶度的优越性能，利用Re:YAG荧光陶瓷代替传统白光LED光源中的荧光粉和胶体混合的封装外壳，有效避免白光LED光源由于高温造成的色温漂移，提高了白光LED光源的稳定性，并提高了白光LED光源的光效。
摘要（英）：

The invention provides a white-light LED (light-emitting diode) and a preparation method of the white-light LED. An LED chip lightens to stimulate fluorescent ceramics to produce white light; the fluorescent ceramics is polycrystal Re: YAG (yttrium aluminum garnet) ceramics, wherein the rare-earth element Re is selected from Ce, Eu, Er, Nd, Tb, Sm, Dy, Tm or Yb; the doping amount is 0.005-10wt.%. The invention makes use of excellent performances of the Re:YAG fluorescent ceramics such as high heat conductivity, high chemical stability and degree of crystallinity and replacing the packaging shell mixed by fluorescent powder and colloid in the light source of the traditional white-light LED with the Re:YAG fluorescent ceramics; and with the adoption of the white-light LED and the preparation method of the white-light LED, color temperature drift of the light source of the white-light LED due to high temperature can be effectively avoided, the stability of the light source of the white-light LED is improved and the lighting effect of the light source of the white-light LED is improved.

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