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Chin. Opt. Lett.
 Home  List of Issues    Issue 02 , Vol. 08 , 2010    10.3788/COL20100802.0221


A new structure of multi-layer phosphor package of white LED with high efficiency
Baicheng Li, Dawei Zhang, Yuanshen Huang, Zhengji Ni, Songlin Zhuang
Shanghai Key Laboratory of Modern Optics System, [University of Shanghai for Science and Technology], Shanghai 200093, China

Chin. Opt. Lett., 2010, 08(02): pp.221-223-3

DOI:10.3788/COL20100802.0221
Topic:Optical devices
Keywords(OCIS Code): 230.0230  230.3670  

Abstract
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.

Copyright: © 2003-2012 . This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Received:2009/4/20
Accepted:
Posted online:

Get Citation: Baicheng Li, Dawei Zhang, Yuanshen Huang, Zhengji Ni, Songlin Zhuang, "A new structure of multi-layer phosphor package of white LED with high efficiency," Chin. Opt. Lett. 08(02), 221-223-3(2010)

Note: The authors would like to thank Prof. Bo Yang for simulations and useful suggestions. This work was supported by the National Natural Science Foundation of China (No. 60908021) Sand the Scientific Research Plan Projects of Shanghai Committee of Science and Technology (Nos. 08DZ2272800, 08ZR1415400, and 09QA1404200).



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