Date
2020
Abstract
A solution based synthesis of well-ordered Cu-rich silicide nano-architectures, consisting of a pair of layered cups and stems (ρ-Cu15Si4 ) is demonstrated. The as-grown ρ-Cu15Si4 typically exhibits distinct interconnected 1D stems, consisting of a stack of nanorods (∼300 nm in length), terminated with concave hexagonal 3D cups that evolve through a self-regulated layer-bylayer growth mechanism. Discrete-time ex situ experimental observations reveal that the ρ-Cu15Si4 evolution is driven by interatomic diffusion, initially triggering the formation of binary-phase silicide islands (spheres) followed by the formation of hexagonal discs, stem growth, and lateral elongation in exactly opposite directions. It is further shown that electrochemically pre-grown Cu-crystals can facilitate direct growth of the ρ-Cu15Si4 in high yield with enhanced substrate coverage.
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Description
peer-reviewed
Publisher
American Chemical Society
Citation
Crystal Growth and Design;20 (10), pp. 6677-6682
Collections
Chemical Sciences
Bernal Institute
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Keywords
nano-architectures, evolution
ULRR Identifiers
https://hdl.handle.net/10344/9584
 https://doi.org/10.34961/14976
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Funding Information
Horizon 2020, European Union (EU), European Research Council (ERC), Science Foundation Ireland (SFI), Irish Research Council (IRC), Marie Curie-Sklodowska Action (MCSA)
Sustainable Development Goals
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