【摘 要】
：
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 pro
【机 构】
：
ShanghaiKeyLaboratoryofModernOpticsSystem,UniversityofShanghaiforScienceandTechnology,Shanghai200093
【出 处】
：
ChineseOpticsLetters
论文部分内容阅读
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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