Selective growth of PbSe on one or both tips of colloidal semiconductor nanorods

Stefan Kudera; Luigi Carbone; Maria Francesca Casula; Roberto Cingolani; Andrea Falqui; Etienne Snoeck; Wolfgang J. Parak; Liberato Manna

doi:10.1021/nl048060g

Selective growth of PbSe on one or both tips of colloidal semiconductor nanorods

Stefan Kudera, Luigi Carbone, Maria Francesca Casula, Roberto Cingolani, Andrea Falqui, Etienne Snoeck, Wolfgang J. Parak^*, Liberato Manna

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

221 Scopus citations

Abstract

PbSe nanocrystals with rock-salt structure are grown on the tips of colloidal CdS and CdSe nanorods. The facets of wurtzite rods provide a substrate with various degrees of reactivity for the growth of PbSe. The presence of dangling Cd bonds may explain subtle differences between nonequivalent facets resulting in the selective nucleation of PbSe only on one of the two tips of each CdS rod. This approach has the potential to facilitate the fabrication of heterostructures with tailored optical and electronic properties.

Original language	English (US)
Pages (from-to)	445-449
Number of pages	5
Journal	Nano Letters
Volume	5
Issue number	3
DOIs	https://doi.org/10.1021/nl048060g
State	Published - Mar 2005
Externally published	Yes

ASJC Scopus subject areas

Bioengineering
General Chemistry
General Materials Science
Condensed Matter Physics
Mechanical Engineering

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abstract = "PbSe nanocrystals with rock-salt structure are grown on the tips of colloidal CdS and CdSe nanorods. The facets of wurtzite rods provide a substrate with various degrees of reactivity for the growth of PbSe. The presence of dangling Cd bonds may explain subtle differences between nonequivalent facets resulting in the selective nucleation of PbSe only on one of the two tips of each CdS rod. This approach has the potential to facilitate the fabrication of heterostructures with tailored optical and electronic properties.",

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AU - Carbone, Luigi

AU - Casula, Maria Francesca

AU - Cingolani, Roberto

AU - Falqui, Andrea

AU - Snoeck, Etienne

AU - Parak, Wolfgang J.

AU - Manna, Liberato

PY - 2005/3

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AB - PbSe nanocrystals with rock-salt structure are grown on the tips of colloidal CdS and CdSe nanorods. The facets of wurtzite rods provide a substrate with various degrees of reactivity for the growth of PbSe. The presence of dangling Cd bonds may explain subtle differences between nonequivalent facets resulting in the selective nucleation of PbSe only on one of the two tips of each CdS rod. This approach has the potential to facilitate the fabrication of heterostructures with tailored optical and electronic properties.

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Selective growth of PbSe on one or both tips of colloidal semiconductor nanorods

Abstract

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