Structural Properties of Wurtzite InP-InGaAs Nanowire Core-Shell Heterostructures

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Abstract

We report on growth and characterization of wurtzite InP-In1-xGaxAs core-shell nanowire heterostructures. A range of nanowire structures with different Ga concentration in the shell was characterized with transmission electron microscopy and X-ray diffraction. We found that the main part of the nanowires has a pure wurtzite crystal structure, with occasional stacking faults occurring only at the top and bottom. This allowed us to determine the structural properties of wurtzite In1-xGaxAs. The InP-In1-xGaxAs core-shell nanowires show a triangular and hexagonal facet structure of {1100} and {10 (10) over bar} planes. X-ray diffraction measurements showed that the core and the shell are pseudomorphic along the c-axis, and the strained axial lattice constant is closer to the relaxed In1-xGaxAs shell. Microphotoluminescence measurements of the nanowires show emission in the infrared regime, which makes them suitable for applications in optical communication.

Detaljer

Författare
Enheter & grupper
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Nanoteknik

Nyckelord

Originalspråkengelska
Sidor (från-till)2462-2467
TidskriftNano Letters
Volym15
Utgåva nummer4
StatusPublished - 2015
PublikationskategoriForskning
Peer review utfördJa

Relaterad forskningsoutput

Yngman, S., 2019 sep, Lund: Lund University (Media-Tryck). 215 s.

Forskningsoutput: AvhandlingDoktorsavhandling (sammanläggning)

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