Chinese Optics Letters, Volume. 8, Issue 2, 221(2010)
A new structure of multi-layer phosphor package of white LED with high efficiency
The applications of white light-emitting diodes (LEDs) have become more and more wide recently, while the low light-extraction e±ciency of white LED limits its development. In this letter, a new structure of multilayer phosphor package of white LED is proposed to improve the light-extraction efficiency. It is illustrated that the thickness of phosphor layer plays an important role in improving the light-extraction efficiency of LED. The light-extraction efficiency of LED is improved by double-layer or multi-layer phosphor package structures.
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Baicheng Li, Dawei Zhang, Yuanshen Huang, Zhengji Ni, Songlin Zhuang. A new structure of multi-layer phosphor package of white LED with high efficiency[J]. Chinese Optics Letters, 2010, 8(2): 221
Received: Apr. 20, 2009
Accepted: --
Published Online: Mar. 5, 2010
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