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Improved Extraction Efficiency of Light-Emitting Diodes by Modifying Surface Roughness With Anodic Aluminum Oxide Film

✍ Scribed by Chien-Chun Wang; Hung-Chi Lu; Chien-Chih Liu; Fenq-Lin Jenq; Yeong-Her Wang; Mau-Phon Houng

Book ID
119804422
Publisher
IEEE
Year
2008
Tongue
English
Weight
838 KB
Volume
20
Category
Article
ISSN
1041-1135

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## Abstract The improved performance of a bottom photonic crystal (PC) light‐emitting diode (LED) is analyzed based on internal quantum efficiency (__Ξ·__~int~) and light‐extraction efficiency (__Ξ·__~ex~). The bottom PC is fabricated by anodized aluminum oxide nanopatterns and InGaN quantum wells (Q