Growth of wurtzite AlxGa1-xP nanowire shells and characterization by Raman spectroscopy

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Growth of wurtzite AlxGa1-xP nanowire shells and characterization by Raman spectroscopy. / Berg, Alexander; Heurlin, Magnus; Tsopanidis, Stylianos; Pistol, Mats Erik; Borgström, Magnus T.

I: Nanotechnology, Vol. 28, Nr. 3, 035706, 20.01.2017.

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

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T1 - Growth of wurtzite AlxGa1-xP nanowire shells and characterization by Raman spectroscopy

AU - Berg, Alexander

AU - Heurlin, Magnus

AU - Tsopanidis, Stylianos

AU - Pistol, Mats Erik

AU - Borgström, Magnus T.

PY - 2017/1/20

Y1 - 2017/1/20

N2 - The phonon energies of AlGaP in wurtzite crystal structure are generally not known, as opposed to their zincblende counterparts, because AlGaP crystallizes in zincblende phase in bulk and thin films structures. However, in nanowires AlGaP can be grown in wurtzite crystal structure. In this work we have grown wurtzite GaP/AlGaP/GaP core-shell nanowires by use of MOVPE. After developing suitable growth conditions, the Al composition was determined by STEM-EDX measurements and the wurtzite AlGaP phonon energies by Raman spectroscopy. Raman measurements show a peak shift with increasing Al composition in the AlGaP shell. We find that the phonon energies for wurtzite AlGaP are slightly lower than for zincblende AlGaP. Our results can be used to determine the Al composition in wurtzite AlGaP by Raman scattering.

AB - The phonon energies of AlGaP in wurtzite crystal structure are generally not known, as opposed to their zincblende counterparts, because AlGaP crystallizes in zincblende phase in bulk and thin films structures. However, in nanowires AlGaP can be grown in wurtzite crystal structure. In this work we have grown wurtzite GaP/AlGaP/GaP core-shell nanowires by use of MOVPE. After developing suitable growth conditions, the Al composition was determined by STEM-EDX measurements and the wurtzite AlGaP phonon energies by Raman spectroscopy. Raman measurements show a peak shift with increasing Al composition in the AlGaP shell. We find that the phonon energies for wurtzite AlGaP are slightly lower than for zincblende AlGaP. Our results can be used to determine the Al composition in wurtzite AlGaP by Raman scattering.

KW - AlGaP

KW - MOVPE

KW - nanowire

KW - Raman spectroscopy

KW - wurtzite

UR - http://www.scopus.com/inward/record.url?scp=85006474782&partnerID=8YFLogxK

U2 - 10.1088/1361-6528/28/3/035706

DO - 10.1088/1361-6528/28/3/035706

M3 - Article

VL - 28

JO - Nanotechnology

T2 - Nanotechnology

JF - Nanotechnology

SN - 0957-4484

IS - 3

M1 - 035706

ER -