Utilizing Two Dimensional Photonic Crystals in Different Arrangement to Investigate the Correlation between the Air Duty Cycle and the Light Extraction Enhancement of InGaN-Based Light-Emitting Diodes
Journal
IEEE Photonics Journal
Journal Volume
6
Journal Issue
6
Pages
5330-5339
Date Issued
2014
Author(s)
Lee, M. L.
You, Y. H.
Lin, R. M.
Hsieh, C. J.
Su, V. C.
Chen, P. H.
Kuan, C. H.
CHIEH-HSIUNG KUAN
Abstract
This paper demonstrates that the optimal light extraction enhancement of the 2-D photonic crystals (PhCs) light-emitting diodes (LEDs) among different air duty cycles (ADADCsCs) is independent of the geometry and the shape of the 2-D PhCs. Moreover, it also discusses that the side-directional emission property of the 2-D PhCs LEDs in hexagonal lattice arrangement (HLA) is better than that in square lattice arrangement (SLA). Finally, the light output power of the 2-D PhCs LEDs in SLA and in HLA with the ADC of 51% are significantly improved by 60.4% and 81.9%, respectively, as compared with the reference LED at an injection current of 350 mA.
SDGs
Type
journal article