학술논문
Comparison of GaN LED Optical Simulation in 2D and 3D Space Based on k-Domain Analysis Method
Document Type
Periodical
Source
IEEE Journal of Quantum Electronics IEEE J. Quantum Electron. Quantum Electronics, IEEE Journal of. 60(3):1-6 Jun, 2024
Subject
Language
ISSN
0018-9197
1558-1713
1558-1713
Abstract
Earlier researchers have designed nanostructures such as stripe gratings (SG) or photonic crystals array (PhCA) to improve the light extraction efficiency (LEE) of light-emitting diodes (LEDs) by the diffraction mechanism. However, through k-domain method and simulation analysis, this letter finds that although SG perform well in 2D simulation, their effect drops sharply in 3D space, a phenomenon being overlooked in the community. This letter explains the diffraction mechanism of LEDs with nanostructure in 2D and 3D space through K-domain analysis, and reveals the inaccuracy of simulating LED with SG in 2D space. Unlike SG, PhCA offers diffraction in two directions and may be more suitable for LEDs.