https://doi.org/10.1140/epjp/s13360-024-04948-z
Regular Article
Configuration analysis of the quantum well epi-layer in the InGaAs-based near-infrared light-emitting diodes
1
Centre for Advanced Optoelectronics Research (CAPTOR), Kulliyyah of Science, International Islamic University Malaysia, 25200, Kuantan, Pahang, Malaysia
2
Department of Physics, Kulliyyah of Science, International Islamic University Islam Malaysia, 25200, Kuantan, Pahang, Malaysia
3
Department of Physics, Shiraz University of Technology, 31371555, Shiraz, Fars, Iran
4
IIUM Photonics and Quantum Centre (IPQC), Kulliyyah of Science, International Islamic University Malaysia, 25200, Kuantan, Pahang, Malaysia
Received:
21
December
2023
Accepted:
27
January
2024
Published online:
11
February
2024
An Indium Gallium Arsenide (InGaAs)-based-infrared light emitting diodes (lR-LEDs) chip was numerically analyzed based on different quantum wells (QWs) configurations in heterojunction epi-layers for optimal electro-optics performance. The performance analysis is executed based on carrier concentration, radiative recombination, and electroluminescence. Four structures with different QW configurations are optimized for low current injection with high internal quantum efficiency. The carriers in the single quantum well (SQW) configuration are leaked at high operating current density, thus leading to a droop in the efficiency due to the reduced radiative recombination rate. The results show that the carrier confinement increase significantly enhances the radiative recombination rate for a structure with a low band gap of QW. The optimal configuration consists of 3 QWs in the epi layers and emits 900 nm peak wavelength. The findings indicate that the improved carrier confinement in the active region significantly enhances the light intensity of NlR-LED, which is nearly twice as high in 3QWs than in the SQW structure.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.