On the growth mechanism and optical properties of ZnO multi-layer nanosheets

H. J. Fan; R. Scholz; F. M. Kolb; M. Zacharias; U. Gösele; F. Heyroth; C. Eisenschmidt; T. Hempel; J. Christen

doi:10.1007/s00339-004-2933-2

On the growth mechanism and optical properties of ZnO multi-layer nanosheets

H. J. Fan^*, R. Scholz, F. M. Kolb, M. Zacharias, U. Gösele, F. Heyroth, C. Eisenschmidt, T. Hempel, J. Christen

^*Corresponding author for this work

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

111 Citations (Scopus)

Abstract

We report multi-layer ZnO nanosheets obtained by annealing Zn polyhedral particles in pure O₂. The structure comprises a cluster core with side faces terminated with 50-nm-thick multi-layer sheets. The nanosheets were found to be (0001)-oriented single-crystalline wurtzite ZnO. By studying the early growth stages, it appears that the sheets form through a ripening process of dendritic ZnO nanostructures, during which the single-crystalline nature and crystallographic orientation are conserved. The ripening is promoted by the rapid oxidation of the Zn polyhedral microcrystals. We also show that appropriate modification of the oxidation process leads to the formation of well-defined dendritic nanowires. The optical properties (photoluminescence and Raman) of these nanostructured materials are discussed.

Original language	English
Pages (from-to)	1895-1900
Number of pages	6
Journal	Applied Physics A: Materials Science and Processing
Volume	79
Issue number	8
DOIs	https://doi.org/10.1007/s00339-004-2933-2
Publication status	Published - Dec 2004
Externally published	Yes

ASJC Scopus Subject Areas

General Chemistry
General Materials Science

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10.1007/s00339-004-2933-2

Cite this

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title = "On the growth mechanism and optical properties of ZnO multi-layer nanosheets",

abstract = "We report multi-layer ZnO nanosheets obtained by annealing Zn polyhedral particles in pure O2. The structure comprises a cluster core with side faces terminated with 50-nm-thick multi-layer sheets. The nanosheets were found to be (0001)-oriented single-crystalline wurtzite ZnO. By studying the early growth stages, it appears that the sheets form through a ripening process of dendritic ZnO nanostructures, during which the single-crystalline nature and crystallographic orientation are conserved. The ripening is promoted by the rapid oxidation of the Zn polyhedral microcrystals. We also show that appropriate modification of the oxidation process leads to the formation of well-defined dendritic nanowires. The optical properties (photoluminescence and Raman) of these nanostructured materials are discussed.",

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AU - Fan, H. J.

AU - Scholz, R.

AU - Kolb, F. M.

AU - Zacharias, M.

AU - Gösele, U.

AU - Heyroth, F.

AU - Eisenschmidt, C.

AU - Hempel, T.

AU - Christen, J.

PY - 2004/12

Y1 - 2004/12

N2 - We report multi-layer ZnO nanosheets obtained by annealing Zn polyhedral particles in pure O2. The structure comprises a cluster core with side faces terminated with 50-nm-thick multi-layer sheets. The nanosheets were found to be (0001)-oriented single-crystalline wurtzite ZnO. By studying the early growth stages, it appears that the sheets form through a ripening process of dendritic ZnO nanostructures, during which the single-crystalline nature and crystallographic orientation are conserved. The ripening is promoted by the rapid oxidation of the Zn polyhedral microcrystals. We also show that appropriate modification of the oxidation process leads to the formation of well-defined dendritic nanowires. The optical properties (photoluminescence and Raman) of these nanostructured materials are discussed.

AB - We report multi-layer ZnO nanosheets obtained by annealing Zn polyhedral particles in pure O2. The structure comprises a cluster core with side faces terminated with 50-nm-thick multi-layer sheets. The nanosheets were found to be (0001)-oriented single-crystalline wurtzite ZnO. By studying the early growth stages, it appears that the sheets form through a ripening process of dendritic ZnO nanostructures, during which the single-crystalline nature and crystallographic orientation are conserved. The ripening is promoted by the rapid oxidation of the Zn polyhedral microcrystals. We also show that appropriate modification of the oxidation process leads to the formation of well-defined dendritic nanowires. The optical properties (photoluminescence and Raman) of these nanostructured materials are discussed.

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On the growth mechanism and optical properties of ZnO multi-layer nanosheets

Abstract

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