Study of the influence of photon recycling on extraction efficiency in a slab light-emitting diode

YiChen Shuai; GuangHan Fan; TianMing Zhou; ShuWen Zheng

doi:10.1117/12.761470

4 January 2008 Study of the influence of photon recycling on extraction efficiency in a slab light-emitting diode

YiChen Shuai, GuangHan Fan, TianMing Zhou, ShuWen Zheng

Proceedings Volume 6841, Solid State Lighting and Solar Energy Technologies; 684110 (2008) https://doi.org/10.1117/12.761470
Event: Photonics Asia 2007, 2007, Beijing, China

Abstract

Photon recycling effect has significant influence on the extraction efficiency of LEDs, which active regions possess high spontaneous emission efficiency, i.e. high material quality. Therefore, the conventional definition of internal quantum efficiency should be revised as pointed out by other researchers. In this work, some more detailed considerations of photon extraction efficiency in LEDs are examined using a simple slab structure. Theoretical modeling results show that in order to improve the overall light conversion efficiency, it is necessary to remove the device substrate, to optimize the overall doping profile design, and to use highly reflective metal contacts or DBR structures.

Citation Download Citation

YiChen Shuai, GuangHan Fan, TianMing Zhou, and ShuWen Zheng "Study of the influence of photon recycling on extraction efficiency in a slab light-emitting diode", Proc. SPIE 6841, Solid State Lighting and Solar Energy Technologies, 684110 (4 January 2008); https://doi.org/10.1117/12.761470

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