Journal
NANOMATERIALS
Volume 10, Issue 12, Pages -Publisher
MDPI
DOI: 10.3390/nano10122553
Keywords
composition; ternary nanowires; quaternary liquid melts; Au-catalyzed; modelling
Categories
Funding
- European Union's Horizon 2020 research and innovation program
- Marie Sklodowska-Curie grant [722176]
- Swedish Research Council (VR)
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We explain the composition of ternary nanowires nucleating from a quaternary liquid melt. The model we derive describes the evolution of the solid composition from the nucleated-limited composition to the kinetic one. The effect of the growth temperature, group V concentration and Au/III concentration ratio on the solid-liquid dependence is studied. It has been shown that the solid composition increases with increasing temperature and Au concentration in the droplet at the fixed In/Ga concentration ratio. The model does not depend on the site of nucleation and the geometry of monolayer growth and is applicable for nucleation and growth on a facet with finite radius. The case of a steady-state (or final) solid composition is considered and discussed separately. While the nucleation-limited liquid-solid composition dependence contains the miscibility gap at relevant temperatures for growth of InxGa1-xAs NWs, the miscibility gap may be suppressed completely in the steady-state growth regime at high supersaturation. The theoretical results are compared with available experimental data via the combination of the here described solid-liquid and a simple kinetic liquid-vapor model.
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