Formation of asymmetric one-sided metal-tipped semiconductor nanocrystal dots and rods

Taleb Mokari; Claudia G. Sztrum; Asaf Salant; Eran Rabani; Uri Banin

doi:10.1038/nmat1505

Formation of asymmetric one-sided metal-tipped semiconductor nanocrystal dots and rods

Taleb Mokari^*, Claudia G. Sztrum, Asaf Salant, Eran Rabani, Uri Banin

^*Corresponding author for this work

Institute of Chemistry

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

488 Scopus citations

Abstract

The formation of asymmetric one-sided metal-tipped semiconductor nanocrystal dots and rods, was studied. The one-sided growth was found to be preceded by two-sided growth and was observed in different particle shapes. Theoretical modeling in a lattice-gas model and experimental analysis show that a ripening process drives gold from one end to the other, transforming two-sided growth to one-sided growth. It was shown that the ripening on the nanostructure lead to a phase-segregated structure.

Original language	English
Pages (from-to)	855-863
Number of pages	9
Journal	Nature Materials
Volume	4
Issue number	11
DOIs	https://doi.org/10.1038/nmat1505
State	Published - Nov 2005

Bibliographical note

Funding Information:
We thank I. Popov from the Center for Nanoscience and Nanotechnology for the HRTEM measurement. We thank A. Willenz from the Electron Microscopy Lab, the Life Sciences Institute, for assistance in TEM measurements. This work was supported in part by the EU under the program SA-NANO and by the US–Israel Binational Science Foundation. T.M. acknowledges support of the Ministry of Science, Israel. Correspondence and requests for materials should be addressed to E.R. or U.B. Supplementary Information accompanies this paper on www.nature.com/naturematerials.

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title = "Formation of asymmetric one-sided metal-tipped semiconductor nanocrystal dots and rods",

abstract = "The formation of asymmetric one-sided metal-tipped semiconductor nanocrystal dots and rods, was studied. The one-sided growth was found to be preceded by two-sided growth and was observed in different particle shapes. Theoretical modeling in a lattice-gas model and experimental analysis show that a ripening process drives gold from one end to the other, transforming two-sided growth to one-sided growth. It was shown that the ripening on the nanostructure lead to a phase-segregated structure.",

author = "Taleb Mokari and Sztrum, {Claudia G.} and Asaf Salant and Eran Rabani and Uri Banin",

note = "Funding Information: We thank I. Popov from the Center for Nanoscience and Nanotechnology for the HRTEM measurement. We thank A. Willenz from the Electron Microscopy Lab, the Life Sciences Institute, for assistance in TEM measurements. This work was supported in part by the EU under the program SA-NANO and by the US–Israel Binational Science Foundation. T.M. acknowledges support of the Ministry of Science, Israel. Correspondence and requests for materials should be addressed to E.R. or U.B. Supplementary Information accompanies this paper on www.nature.com/naturematerials.",

year = "2005",

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doi = "10.1038/nmat1505",

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AU - Rabani, Eran

AU - Banin, Uri

N1 - Funding Information: We thank I. Popov from the Center for Nanoscience and Nanotechnology for the HRTEM measurement. We thank A. Willenz from the Electron Microscopy Lab, the Life Sciences Institute, for assistance in TEM measurements. This work was supported in part by the EU under the program SA-NANO and by the US–Israel Binational Science Foundation. T.M. acknowledges support of the Ministry of Science, Israel. Correspondence and requests for materials should be addressed to E.R. or U.B. Supplementary Information accompanies this paper on www.nature.com/naturematerials.

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AB - The formation of asymmetric one-sided metal-tipped semiconductor nanocrystal dots and rods, was studied. The one-sided growth was found to be preceded by two-sided growth and was observed in different particle shapes. Theoretical modeling in a lattice-gas model and experimental analysis show that a ripening process drives gold from one end to the other, transforming two-sided growth to one-sided growth. It was shown that the ripening on the nanostructure lead to a phase-segregated structure.

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Formation of asymmetric one-sided metal-tipped semiconductor nanocrystal dots and rods

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