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Proceedings Paper

Study of the influence of photon recycling on extraction efficiency in a slab light-emitting diode
Author(s): YiChen Shuai; GuangHan Fan; TianMing Zhou; ShuWen Zheng
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Paper 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.

Paper Details

Date Published: 4 January 2008
PDF: 6 pages
Proc. SPIE 6841, Solid State Lighting and Solar Energy Technologies, 684110 (4 January 2008); doi: 10.1117/12.761470
Show Author Affiliations
YiChen Shuai, South China Normal Univ. (China)
GuangHan Fan, South China Normal Univ. (China)
TianMing Zhou, South China Normal Univ. (China)
ShuWen Zheng, South China Normal Univ. (China)


Published in SPIE Proceedings Vol. 6841:
Solid State Lighting and Solar Energy Technologies
Jinmin Li; Ling Wu; Yubo Fan; Yong-Hang Zhang; Michael E. Coltrin; Yuwen Zhao; Nuofu Chen; Vladimir M. Andreev; Jai Singh, Editor(s)

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