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Effects of the microstructure slab with pillars on light extraction of GaN light-emitting diode 下载免费PDF全文
The positive z direction relative light extraction efficiency of GaN
light-emitting diodes with microstructure slab is calculated by
three-dimensional finite-difference
time-domain method, where the microstructure slab consists of a graphite
lattice of pillars. The
results show that the two-dimensional
graphite-arranged pillars suppress light extraction. When there is a thick
pillar in the middle of the pillars, the structure can enhance light
extraction of the light-emitting diodes. The tower-like pillars, which are
thin on the top of the pillars and thick on the bottom of the pillars,
benefit the light extraction when the angle of the tower-like pillars is
proper. 相似文献
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