Comparison of GaN LED Optical Simulation in 2D and 3D Space Based on k-Domain Analysis Method
Journal article, 2024
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.
k-domain method
Light-emitting diodes
nanostructures
Author
Tianwen Xia
Fuzhou University
Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China
Le Wang
Beijing University of Technology
Enguo Chen
Fuzhou University
Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China
Zhonghang Huang
Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China
Fuzhou University
Chunli Yan
Fuzhou University
Dalei Wu
Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China
Fuzhou University
Q. Frank Yan
Fuzhou University
Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China
Jie Sun
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China
Fuzhou University
IEEE Journal of Quantum Electronics
0018-9197 (ISSN) 15581713 (eISSN)
Vol. 60 3 3200106Subject Categories
Mechanical Engineering
Physical Sciences
DOI
10.1109/JQE.2024.3389043