Strain engineering of nanowire multi-quantum well demonstrated by raman spectroscopy

M Wölz, M Ramsteiner, VM Kaganer, O Brandt… - Nano …, 2013 - ACS Publications
An analysis of the strain in an axial nanowire superlattice shows that the dominating strain
state can be defined arbitrarily between unstrained and maximum mismatch strain by …

Strain-induced band gap engineering in selectively grown GaN–(Al, Ga) N core–shell nanowire heterostructures

M Hetzl, M Kraut, J Winnerl, L Francaviglia… - Nano …, 2016 - ACS Publications
We demonstrate the selective area growth of GaN–(Al, Ga) N core–shell nanowire
heterostructures directly on Si (111). Photoluminescence spectroscopy on as-grown …

Counterintuitive strain distribution in axial (In, Ga) N/GaN nanowires

T Krause, M Hanke, O Brandt, A Trampert - Applied Physics Letters, 2016 - pubs.aip.org
We study the three-dimensional deformation field induced by an axial (In, Ga) N segment in
a GaN nanowire. Using the finite element method within the framework of linear elasticity …

High‐resolution mapping of strain partitioning and relaxation in InGaN/GaN nanowire heterostructures

B Park, JK Lee, CT Koch, M Wölz… - Advanced …, 2022 - Wiley Online Library
Abstract Growing an InxGa1− xN/GaN (InGaN/GaN) multi‐quantum well (MQW)
heterostructure in nanowire (NW) form is expected to overcome limitations inherent in light …

Double strain state in a single GaN/AlN nanowire: Probing the core-shell effect by ultraviolet resonant Raman scattering

V Laneuville, F Demangeot, R Péchou, P Salles… - Physical Review B …, 2011 - APS
We report the demonstration of an ultra-sensitive Raman probing of single GaN/AlN
nanowires (NWs). The high sensitivity of the Raman scattering by longitudinal optical …

Radius-dependent homogeneous strain in uncoalesced GaN nanowires

G Calabrese, D van Treeck, VM Kaganer, O Konovalov… - Acta Materialia, 2020 - Elsevier
We investigate the strain state of ensembles of thin and nearly coalescence-free self-
assembled GaN nanowires prepared by plasma-assisted molecular beam epitaxy on Ti/Al 2 …

Strain mapping in an InGaN/GaN nanowire using a nano-focused x-ray beam

T Stankevič, D Dzhigaev, Z Bi, M Rose… - Applied Physics …, 2015 - pubs.aip.org
Strained InGaN/GaN core-shell nanowires (NWs) are promising candidates for solid state
lighting applications due to their superior properties compared to planar films. NW based …

Strain distribution and interface modulation of highly lattice-mismatched InN/GaN heterostructure nanowires

YH Kim, HJ Park, K Kim, CS Kim, WS Yun… - Applied Physics …, 2009 - pubs.aip.org
Strain distribution and interface modulation of highly lattice-mismatched InN/GaN
heterostructure nanowires | Applied Physics Letters | AIP Publishing Skip to Main Content …

Nanostructure and strain in InGaN/GaN superlattices grown in GaN nanowires

T Kehagias, GP Dimitrakopulos, P Becker… - …, 2013 - iopscience.iop.org
The structural properties and the strain state of InGaN/GaN superlattices embedded in GaN
nanowires were analyzed as a function of superlattice growth temperature, using …

Macro-and micro-strain in GaN nanowires on Si (111)

B Jenichen, O Brandt, C Pfueller, P Dogan… - …, 2011 - iopscience.iop.org
We analyze the strain state of GaN nanowire ensembles by x-ray diffraction. The nanowires
are grown by molecular beam epitaxy on a Si (111) substrate in a self-organized manner …