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Title
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Atomic resolution monitoring of cation exchange in CdSe-PbSe heteronanocrystals during epitaxial solid-solid-vapor growth
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Author
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Abstract
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| Here, we show a novel solidsolidvapor (SSV) growth mechanism whereby epitaxial growth of heterogeneous semiconductor nanowires takes place by evaporation-induced cation exchange. During heating of PbSe-CdSe nanodumbbells inside a transmission electron microscope (TEM), we observed that PbSe nanocrystals grew epitaxially at the expense of CdSe nanodomains driven by evaporation of Cd. Analysis of atomic-resolution TEM observations and detailed atomistic simulations reveals that the growth process is mediated by vacancies. |
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Language
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English
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Source (journal)
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Nano letters / American Chemical Society. - Washington
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Publication
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Washington
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2014
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ISSN
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1530-6984
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DOI
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10.1021/NL501441W
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Volume/pages
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14
:6
(2014)
, p. 3661-3667
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ISI
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000337337100106
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Full text (Publisher's DOI)
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Full text (open access)
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