Gold coated microstructures as a platform for the preparation of semiconductor-based hybrid 3D micro-nano-architectures

In this paper, three types of microstructures are argued as substrates for electrochemical deposition of Au nanodots. They include: (a) aero-GaN consisting of hollow GaN microtetrapods, (b) microdomains of pores with a controlled design produced by anodization of InP wafers, and (c) patterned microd...

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Bibliographic Details
Published in:European physical journal plus 2023-09, Vol.138 (9), p.827, Article 827
Main Authors: Monaico, Eduard V., Ursaki, Veaceslav V., Tiginyanu, Ion M.
Format: Article
Language:English
Subjects:
Applied and Technical Physics
Atomic
Catalysts
Chemical vapor deposition
Complex Systems
Condensed Matter Physics
Crystal growth
Crystals
Deposition
Electrical resistivity
Electrochemistry
Electrodes
Electrolytes
Electroplating
Epitaxial growth
Focus Point on Physics in the Balkans: Perspectives and Challenges
Gallium nitrides
Gold
Gold coatings
Mathematical and Computational Physics
Microstructure
Molecular
Molecular beam epitaxy
Morphology
Nanowires
Optical and Plasma Physics
Organic chemicals
Physics
Physics and Astronomy
Plating
Pulse duration
Regular Article
Substrates
Theoretical
Vapor phase epitaxy
Vapor phases
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Summary:In this paper, three types of microstructures are argued as substrates for electrochemical deposition of Au nanodots. They include: (a) aero-GaN consisting of hollow GaN microtetrapods, (b) microdomains of pores with a controlled design produced by anodization of InP wafers, and (c) patterned microdomains composed of strips with alternating electrical conductivity in GaN crystals grown by hydride vapor phase epitaxy. Uniform deposition of Au nanodots with controlled density is demonstrated by using pulsed electroplating, the voltage pulse width and amplitude as well as the pause between pulses and the conductivity of the substrate serving as adjustable parameters. The morphology of the produced hybrid microarchitectures was investigated by scanning electron microscopy. The explored microstructures are proposed as platforms for the development of complex 3D hybrid micro-nano-architectures via the vapor–liquid–solid deposition of various semiconductor nanowires with Au nanodots as catalysts.
ISSN:2190-5444
2190-5444
DOI:10.1140/epjp/s13360-023-04462-8