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Journal of Computational Electronics
Erschienen in: Journal of Computational Electronics 4/2016

28.09.2016

Temperature-dependent efficiency droop analysis of InGaN MQW light-emitting diode with modified ABC model

verfasst von: P. Prajoon, D. Nirmal, M. Anuja Menokey, J. Charles Pravin

Erschienen in: Journal of Computational Electronics | Ausgabe 4/2016

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Abstract

In this work, the origin of the efficiency droop at high injection current in an InGaN multiple-quantum-well light-emitting diode is suggested to be saturation of the radiative efficiency and insufficient carrier injection efficiency. A simple internal quantum efficiency (IQE) estimation method is developed by modifying the conventional ABC model to include carrier leakage mechanisms such as thermionic emission and carrier overflow, to account for the carrier injection efficiency at high current densities. The results show that thermionic emission and carrier overflow play a dominant role in the carrier leakage mechanism at high injection current. The data obtained from this analysis enable inference of the temperature dependence of the radiative/nonradiative coefficients and carrier leakage mechanisms. In addition, the model predicts the temperature dependence and rationale behind the degradation of the IQE at higher injection currents. Furthermore, the modeled output results show good fit with experimental data.
Vorheriger Artikel Efficient numerical procedure for the determination of the wave function-independent terms in longitudinal optical phonon scattering rates formulated in the Fourier domain
Nächster Artikel Theoretical investigation of the electronic structure and optical properties of zinc-doped magnesium oxide

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Metadaten
Titel
Temperature-dependent efficiency droop analysis of InGaN MQW light-emitting diode with modified ABC model
verfasst von
P. Prajoon
D. Nirmal
M. Anuja Menokey
J. Charles Pravin
Publikationsdatum
28.09.2016
Verlag
Springer US
Erschienen in
Journal of Computational Electronics / Ausgabe 4/2016
Print ISSN: 1569-8025
Elektronische ISSN: 1572-8137
DOI
https://doi.org/10.1007/s10825-016-0904-4

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