Investigating the competition of radiative and nonradiative recombination in (In,Ga)N quantum wells

Loading...
Thumbnail Image
Files
NUSOD23_TuB01.pdf(299.24 KB)
Accepted Version
Date
2023-10-09
Authors
Schulz, Stefan
McMahon, Joshua
Kioupakis, E.
Barrett, R. M.
Ahumada-Lazo, R.
Alanis, J. A .
Parkinson, P.
Kappers, M. J.
Oliver, R. A.
Binks, D.
Journal Title
Journal ISSN
Volume Title
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Research Projects
Organizational Units
Journal Issue
Abstract
We present a combined theoretical and experimental analysis of Auger recombination in c-plane (In,Ga)N quantum wells. On the theoretical side we use an atomistic model that accounts for random alloy fluctuations to investigate the impact that temperature and carrier density has on the radiative and Auger recombination rate. Our calculations indicate a weak temperature dependence of the Auger rate compared to the temperature dependence of the radiative rate. However, with increasing carrier density the Auger rate increases more strongly when compared to the radiative rate. Our theory results indicate an onset of the efficiency drop at carrier densities ≳ 1×10 19 cm −3 , in very good agreement with our photoluminescence studies on similar (In,Ga)N quantum well samples. Overall, we find that alloy enhanced Auger recombination is sufficient to explain the experimental data investigated here.
Description
Keywords
InGaN , Quantum wells , Carrier localization , Auger recombination
Citation
Schulz, S., McMahon, J., Kioupakis, E., Barrett, R. M., Ahumada-Lazo, R., Alanis, J. A., Parkinson, P., Kappers, M. J., Oliver, R. A. and Binks, D. (2023) 'Investigating the competition of radiative and nonradiative recombination in (In,Ga)N quantum wells', 2023 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD), Turin, Italy, 18-21 November, pp. 57-58. doi: 10.1109/NUSOD59562.2023.10273496
Copyright
© 2023, IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.