MBE growth of nanowires using colloidal Ag nanoparticles

Bouravleuv, A. D.; Ilkiv, I. V.; Reznik, R. R.; Shtrom, I. V.; Khrebtov, A. I.; Samsonenko, Yu. B.; Сошніков, І. П.; Cirlin, G. É.; Lipsanen, Harri

doi:10.1088/1742-6596/864/1/012010

Cited by 2 publications

(2 citation statements)

References 16 publications

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“…Nevertheless, the use of colloidal particles of metals other than Au in the MBE growth of III-V NWs on Si remains less explored. Meanwhile, the feasibility of Ag as a catalyst was demonstrated in the growth of GaAs NWs on GaAs (111) and (100) substrates [14][15][16], InP NWs on GaAs(111) [17], GaP NWs on Si [18], and InAs NWs on graphene flakes and Si(111) [19,20]. However, a detailed understanding of Ag-catalyzed NW growth on Si substrates still requires further investigation.…”

Section: Introductionmentioning

confidence: 99%

Comparison of GaAs nanowire growth seeded by Ag and Au colloidal nanoparticles on silicon

Berdnikov¹,

Ilkiv²,

Sibirev³

et al. 2020

Nanotechnology

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We present a comparative study of GaAs nanowire growth on Si(111) substrates by molecular beam epitaxy with the assistance of Au and Ag colloidal nanoparticles. Our approach allows the synthesis of nanowires with different catalyst materials in separate sectors of the same substrate within the same epitaxial process. We match the experimental results to the modeling of chemical potentials and nanowire length distributions to analyze the impact of silicon incorporation into the catalyst droplets on the growth rates and size homogeneity in ensembles of Au- and Ag-catalyzed GaAs nanowires.

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Section: Introductionmentioning

confidence: 99%

Comparison of GaAs nanowire growth seeded by Ag and Au colloidal nanoparticles on silicon

Berdnikov¹,

Ilkiv²,

Sibirev³

et al. 2020

Nanotechnology

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“…However, a deep understanding of the effects of the seed materials on the growth is required to be able to adjust them purposefully. Ag is more similar to Au in bulk properties than any other metal and it is among the most studied alternative seed materials for III–V nanowire growth. ,− However, all of these studies report nanowire growth behavior that is very different than for Au and there remains a significant gap in the understanding of how the seed material determines the nanowire properties.…”

Section: Introductionmentioning

confidence: 99%

Understanding GaAs Nanowire Growth in the Ag–Au Seed Materials System

Mårtensson

Whiticar

Mata

et al. 2018

Crystal Growth & Design

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The integration of III–V semiconductors with Si in device fabrication is facilitated by the use of nanoscale structures such as nanowires. Nanowires are predominantly grown using Au seed particles; however, the seed material is known to affect the nanowire growth and properties. Here we present growth of GaAs nanowires using three different seed particle materials: Au, Ag, and a AgAu alloy. By comparing the results from the different seeds, we found that the growths of Au- and AgAu-seeded nanowires were in general very similar, with homogeneous and vertical nanowires observed in both cases. The Ag-seeded growths instead revealed a lower yield of vertical nanowires with large variations in lengths. Different Ga-concentrations were measured in the different seed particles, which suggested that the Au and the AgAu seed particles were liquid during growth, whereas Ag particles were solid. The chemical potential of Ga was however found to be similar for all three seed materials. We propose that the Ga concentrations are determined by the chemical potential of Ga, which in turn explains why Ag-seeded nanowire growth proceeds with a solid particle. Overall, this study shows that varying the seed material can be a powerful tool to gain a deeper understanding of particle assisted nanowire growth.

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MBE growth of nanowires using colloidal Ag nanoparticles

Cited by 2 publications

References 16 publications

Comparison of GaAs nanowire growth seeded by Ag and Au colloidal nanoparticles on silicon

Comparison of GaAs nanowire growth seeded by Ag and Au colloidal nanoparticles on silicon

Understanding GaAs Nanowire Growth in the Ag–Au Seed Materials System

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