A new structure of multi-layer phosphor package of white LED with high efficiency

作者：Li, Baicheng^*; Zhang, Dawei; Huang, Yuanshen; Ni, Zhengji; Zhuan, Songlin

来源：Chinese Optics Letters, 2010, 8(2): 221-223.

DOI：10.3788/COL20100802.0221

• LIGHT-EMITTING-DIODES

The applications of white light-emitting diodes (LEDs) have become more and more wide recently, while the low light-extraction efficiency 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.

• 出版日期2010-2-10
• 单位上海理工大学