Paper
21 February 2011 Numerical study on efficiency droop of blue InGaN light-emitting diodes
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Abstract
Specific designs on the band structures near the active region are investigated numerically by using the APSYS simulation program with the purpose to surmount the efficiency droop in the InGaN blue LEDs. Systematic analyses included the energy band diagrams, radiative and SRH recombination rates, distribution of electrons and holes in the active region, and electron overflow. Simulation results show that, with appropriate designs, the efficiency droop may be effectively reduced due to the increase of hole injection efficiency, the enhancement of blocking capability for electrons, or the uniform carrier distribution of carriers in the active region.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yen-Kuang Kuo, Jih-Yuan Chang, and Jen-De Chen "Numerical study on efficiency droop of blue InGaN light-emitting diodes", Proc. SPIE 7933, Physics and Simulation of Optoelectronic Devices XIX, 793317 (21 February 2011); https://doi.org/10.1117/12.874849
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Cited by 3 scholarly publications.
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KEYWORDS
Light emitting diodes

Electrons

Indium gallium nitride

Quantum wells

Electron beam lithography

Gallium nitride

Internal quantum efficiency

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