Issue of spatial coherence in MQW based micro-LED simulation
Journal article, 2021
In existing flip-chip LED simulations, the light extraction efficiency is related to the multiple quantum well (MQW) to metal reflector distance because of optical interference. We calculate the contrast using several typical light intensity distributions among the several QWs in MQW. The coherence is obtained analytically. When the luminosity of each QW is equal, the contrast is ∼0, meaning the light is incoherent, contrary to traditional studies. The spatial coherence is important only when the light emission comes from just one QW. As the MQW has a not negligible thickness, the traditional single-dipole model is no longer accurate.
Author
Le Wang
Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China
Beijing University of Technology
Fuzhou University
Jie Sun
Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
Fuzhou University
Qun Yan
Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China
Fuzhou University
Jiao Lin
Huawei
Weiling Guo
Beijing University of Technology
Enguo Chen
Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China
Fuzhou University
Chen Xu
Beijing University of Technology
Yongzhen Liu
Fuzhou University
Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China
Optics Express
1094-4087 (ISSN) 10944087 (eISSN)
Vol. 29 20 31520-31526Subject Categories
Atom and Molecular Physics and Optics
Other Physics Topics
DOI
10.1364/OE.438135
PubMed
34615243