131 citations · 1.9k across the 71 of their papers we have counts for
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Computing Equilibrium Shapes of Wurtzite Crystals: The Example of GaN
Hong Li, Lutz Geelhaar, Henning Riechert +1
Crystal morphologies are important for the design and functionality of devices based on low-dimensional nanomaterials. The equilibrium crystal shape (ECS) is a key quantity in this…
Compatibility of the selective area growth of GaN nanowires on AlN-buffered Si substrates with the operation of light emitting diodes
Mattia Musolino, Abbes Tahraoui, Sergio Fernández-Garrido +4
AlN layers with thicknesses between 2 and 14 nm were grown on Si(111) substrates by molecular beam epitaxy. The effect of the AlN layer thickness on the morphology and nucleation t…
Understanding peculiarities in the optoelectronic characteristics of light emitting diodes based on (In,Ga)N/GaN nanowires
Mattia Musolino, Abbes Tahraoui, Friederich Limbach +5
We investigate the effect of the p-type top contact on the optoelectronic characteristics of light emitting diodes (LEDs) based on (In,Ga)N/GaN nanowire (NW) ensembles grown by mol…
Correlation between the structural and optical properties of spontaneously formed GaN nanowires: a quantitative evaluation of the impact of nanowire coalescence
S. Fernández-Garrido, V. M. Kaganer, C. Hauswald +5
We investigate the structural and optical properties of spontaneously formed GaN nanowires with different degrees of coalescence. This quantity is determined by an analysis of the…
Stacking faults as quantum wells in nanowires: Density of states, oscillator strength and radiative efficiency
P. Corfdir, C. Hauswald, J. K. Zettler +6
We investigate the nature of excitons bound to I1 basal-plane stacking faults [(I1;X)] in GaN nanowire ensembles by continuous-wave and time-resolved photoluminescence spectroscopy…
Investigating the origin of the nonradiative decay of bound excitons in GaN nanowires
Christian Hauswald, Pierre Corfdir, Johannes K. Zettler +9
We investigate the origin of the fast recombination dynamics of bound and free excitons in GaN nanowire ensembles by temperature-dependent photoluminescence spectroscopy using both…
Localization and defects in axial (In,Ga)N/GaN nanowire heterostructures investigated by spatially-resolved luminescence spectroscopy
Jonas Lähnemann, Christian Hauswald, Martin Wölz +4
(In,Ga)N insertions embedded in self-assembled GaN nanowires are of current interest for applications in solid state light emitters. Such structures exhibit a notoriously broad emi…