GaN-based light-emitting diodes on various substrates: a critical review

G Li, W Wang, W Yang, Y Lin, H Wang… - Reports on Progress …, 2016 - iopscience.iop.org
GaN and related III-nitrides have attracted considerable attention as promising materials for
application in optoelectronic devices, in particular, light-emitting diodes (LEDs). At present …

Efficiency models for GaN-based light-emitting diodes: Status and challenges

J Piprek - Materials, 2020 - mdpi.com
Light-emitting diodes (LEDs) based on Gallium Nitride (GaN) have been revolutionizing
various applications in lighting, displays, biotechnology, and other fields. However, their …

Efficiency droop in InGaN/GaN blue light-emitting diodes: Physical mechanisms and remedies

G Verzellesi, D Saguatti, M Meneghini… - Journal of Applied …, 2013 - pubs.aip.org
Physical mechanisms causing the efficiency droop in InGaN/GaN blue light-emitting diodes
and remedies proposed for droop mitigation are classified and reviewed. Droop …

Identifying the cause of the efficiency droop in GaInN light-emitting diodes by correlating the onset of high injection with the onset of the efficiency droop

DS Meyaard, GB Lin, J Cho, E Fred Schubert… - Applied Physics …, 2013 - pubs.aip.org
An unequivocal correlation between the onset of high injection and the onset of the
efficiency droop is demonstrated in GaInN light-emitting diodes over a wide range of …

A review on experimental measurements for understanding efficiency droop in InGaN-based light-emitting diodes

L Wang, J Jin, C Mi, Z Hao, Y Luo, C Sun, Y Han… - Materials, 2017 - mdpi.com
Efficiency droop in GaN-based light emitting diodes (LEDs) under high injection current
density perplexes the development of high-power solid-state lighting. Although the relevant …

Influence of V-pits on the efficiency droop in InGaN/GaN quantum wells

J Kim, YH Cho, DS Ko, XS Li, JY Won, E Lee… - Optics express, 2014 - opg.optica.org
We discuss the influence of V-pits and their energy barrier, originating from its facets of
(101¯ 1) planes, on the luminescence efficiency of InGaN LEDs. Experimental analysis …

Numerical analysis of indirect Auger transitions in InGaN

F Bertazzi, M Goano, E Bellotti - Applied Physics Letters, 2012 - pubs.aip.org
Indirect phonon-assisted Auger recombination mechanisms in bulk InGaN are investigated
in the framework of perturbation theory, using first-principles phonon spectral density …

Thermal and efficiency droop in InGaN/GaN light-emitting diodes: decoupling multiphysics effects using temperature-dependent RF measurements

A Rashidi, M Monavarian, A Aragon, D Feezell - Scientific Reports, 2019 - nature.com
Multiphysics processes such as recombination dynamics in the active region, carrier
injection and transport, and internal heating may contribute to thermal and efficiency droop …

Analytical analysis of internal quantum efficiency with polarization fields in GaN-based light-emitting diodes

M Usman, AR Anwar, M Munsif, S Malik… - Superlattices and …, 2019 - Elsevier
This paper presents the analytical model for the analysis of internal quantum efficiency as
well as light output power of GaN-based light-emitting diodes by introducing the polarization …

InGaN light-emitting diodes: Efficiency-limiting processes at high injection

V Avrutin, F Zhang, Ü Özgür, H Morkoç… - Journal of Vacuum …, 2013 - pubs.aip.org
The authors discuss a relatively comprehensive theoretical and experimental study aimed
on unveiling the dominant efficiency loss mechanism at high injection levels in InGaN light …