Three-dimensional nanoscale study of Al segregation and quantum dot formation in GaAs/AlGaAs core-shell nanowires

GaAs/Al-GaAs core-shell nanowires fabricated by molecular beam epitaxy contain quantum confining structures susceptible of producing narrow photoluminescence (PL) and single photons. The nanoscale chemical mapping of these structures is analyzed in 3D by atom probe tomography (APT). The study allows...

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Veröffentlicht in:	Applied physics letters 2014-12, Vol.105 (24)
Hauptverfasser:	Mancini, L., Fontana, Y., Conesa-Boj, S., Blum, I., Vurpillot, F., Francaviglia, L., Russo-Averchi, E., Heiss, M., Arbiol, J., Morral, A. Fontcuberta i, Rigutti, L.
Format:	Artikel
Sprache:	eng
Schlagworte:	ALUMINIUM ALUMINIUM ARSENIDES Aluminum gallium arsenides Applied physics ATOMS Confining EMISSION SPECTRA FLUCTUATIONS Gallium arsenide GALLIUM ARSENIDES Hexagons MAPPING MOLECULAR BEAM EPITAXY NANOSCIENCE AND NANOTECHNOLOGY NANOWIRES Organic chemistry PHOTOLUMINESCENCE PHOTONS PROBES QUANTUM DOTS SEGREGATION Three dimensional models THREE-DIMENSIONAL LATTICES TOMOGRAPHY Variation
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