We report the growth of GaAs/GaNAs/GaAs core-multishell nanowires having N compositions exceeding 2%. The structures were grown by plasma-assisted molecular beam epitaxy using constituent Ga-induced vapor-liquid-solid growth on Si(111) substrates. The GaNAs shell nominally contains 0%, 2%, and 3% nitrogen. The axial cross-sectional scanning transmission electron microscopy measurements confirm the existence of core-multishell structure. The room temperature micro-photoluminescence measurements reveal a red-shift of the detected emission with increasing N content in the nanowires, consistent with the expected changes in the GaNAs bandgap energy due to the bowing effect.

Topics
Semiconductors, Heterostructures, Epitaxy, Micro-photoluminescence, Scanning electron microscopy, Photoluminescence spectroscopy, Nanowires, Chemical elements
© 2018 Author(s).
2018
Author(s)
You do not currently have access to this content.