Tailored growth of single-crystalline InP tetrapods

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Despite the technological importance of colloidal covalent III-V nanocrystals with unique optoelectronic properties, their synthetic process still has challenges originating from the complex energy landscape of the reaction. Here, we present InP tetrapod nanocrystals as a crystalline late intermediate in the synthetic pathway that warrants controlled growth. We isolate tetrapod intermediate species with well-defined surfaces of (110) and ((1) over bar(1) over bar(1) over bar) via the suppression of further growth. An additional precursor supply at low temperature induces [(1) over bar(1) over bar(1) over bar]-specific growth, whereas the [110]-directional growth occurs over the activation barrier of 65.7 kJ/mol at a higher temperature, thus finalizes into the (111)-faceted tetrahedron nanocrystals. We address the use of late intermediates with well-defined facets at the sub-10 nm scale for the tailored growth of covalent III-V nanocrystals and highlight the potential for the directed approach of nanocrystal synthesis.
Publisher
NATURE PORTFOLIO
Issue Date
2021-07
Language
English
Article Type
Article
Citation

NATURE COMMUNICATIONS, v.12, no.1

ISSN
2041-1723
DOI
10.1038/s41467-021-24765-7
URI
http://hdl.handle.net/10203/287675
Appears in Collection
PH-Journal Papers(저널논문)
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