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Jeong, Hu Young
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Tailored growth of single-crystalline InP tetrapods

Author(s)
Kim, YoungsikChoi, HyekyoungLee, YeunheeKoh, Weon-kyuCho, EunhyeKim, TaewanKim, HaminKim, Yong-HyunJeong, Hu YoungJeong, Sohee
Issued Date
2021-07
DOI
10.1038/s41467-021-24765-7
URI
https://scholarworks.unist.ac.kr/handle/201301/58465
Fulltext
https://www.nature.com/articles/s41467-021-24765-7
Citation
NATURE COMMUNICATIONS, v.12, no.1, pp.4454
Abstract
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
ISSN
2041-1723
Keyword
TOTAL-ENERGY CALCULATIONSCOLLOIDAL QUANTUM DOTSSEMICONDUCTOR NANOCRYSTALSELECTRONIC-STRUCTUREHIGHLY EFFICIENTTRANSITIONCHEMISTRYLIGHTSE

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