Controlled Growth of Supported ZnO Inverted Nanopyramids with Downward Pointing Tips

Davide Barreca; Giorgio Carraro; Chiara Maccato; Thomas Altantzis; Kimmo Kaunisto; Alberto Gasparotto

doi:10.1021/acs.cgd.8b00198

Controlled Growth of Supported ZnO Inverted Nanopyramids with Downward Pointing Tips

Davide Barreca, Giorgio Carraro, Chiara Maccato, Thomas Altantzis, Kimmo Kaunisto, Alberto Gasparotto

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

10 Citations (Scopus)

Abstract

High purity porous ZnO nanopyramids with controllable properties are grown on their tips on Si(100) substrates by means of a catalyst-free vapor phase deposition route in a wet oxygen reaction environment. The system degree of preferential [001] orientation, as well as nanopyramid size, geometrical shape, and density distribution, can be finely tuned by varying the growth temperature between 300 and 400 °C, whereas higher temperatures lead to more compact systems with a three-dimensional (3D) morphology. A growth mechanism of the obtained ZnO nanostructures based on a self-catalytic vapor-solid (VS) mode is proposed, in order to explain the evolution of nanostructure morphologies as a function of the adopted process conditions. The results obtained by a thorough chemico-physical characterization enable us to get an improved control over the properties of ZnO nanopyramids grown by this technique. Taken together, they are of noticeable importance not only for fundamental research on ZnO nanomaterials with controlled nano-organization but also to tailor ZnO functionalities in view of various potential applications.

Original language	English
Pages (from-to)	2579-2587
Number of pages	9
Journal	Crystal Growth and Design
Volume	18
Issue number	4
DOIs	https://doi.org/10.1021/acs.cgd.8b00198
Publication status	Published - Feb 2018
Publication type	A1 Journal article-refereed

Funding

This work has been supported by Padova University DOR 2016−2017, P-DiSC #03BIRD2016-UNIPD projects, and an ACTION postdoc fellowship. T.A. acknowledges a postdoctoral grant from the Research Foundation Flanders (FWO, Belgium). Thanks are also due to Dr. Rosa Calabrese (Department of Chemical Sciences, Padova University, Italy) and to Dr. T.-P. Ruoko (Department of Chemistry and Bioengineering, Tampere University of Technology, Finland) for skillful technical support.

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Publication forum level 2

ASJC Scopus subject areas

General Chemistry
General Materials Science
Condensed Matter Physics

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10.1021/acs.cgd.8b00198

Cite this

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title = "Controlled Growth of Supported ZnO Inverted Nanopyramids with Downward Pointing Tips",

abstract = "High purity porous ZnO nanopyramids with controllable properties are grown on their tips on Si(100) substrates by means of a catalyst-free vapor phase deposition route in a wet oxygen reaction environment. The system degree of preferential [001] orientation, as well as nanopyramid size, geometrical shape, and density distribution, can be finely tuned by varying the growth temperature between 300 and 400 °C, whereas higher temperatures lead to more compact systems with a three-dimensional (3D) morphology. A growth mechanism of the obtained ZnO nanostructures based on a self-catalytic vapor-solid (VS) mode is proposed, in order to explain the evolution of nanostructure morphologies as a function of the adopted process conditions. The results obtained by a thorough chemico-physical characterization enable us to get an improved control over the properties of ZnO nanopyramids grown by this technique. Taken together, they are of noticeable importance not only for fundamental research on ZnO nanomaterials with controlled nano-organization but also to tailor ZnO functionalities in view of various potential applications.",

author = "Davide Barreca and Giorgio Carraro and Chiara Maccato and Thomas Altantzis and Kimmo Kaunisto and Alberto Gasparotto",

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T1 - Controlled Growth of Supported ZnO Inverted Nanopyramids with Downward Pointing Tips

AU - Barreca, Davide

AU - Carraro, Giorgio

AU - Maccato, Chiara

AU - Altantzis, Thomas

AU - Kaunisto, Kimmo

AU - Gasparotto, Alberto

PY - 2018/2

Y1 - 2018/2

N2 - High purity porous ZnO nanopyramids with controllable properties are grown on their tips on Si(100) substrates by means of a catalyst-free vapor phase deposition route in a wet oxygen reaction environment. The system degree of preferential [001] orientation, as well as nanopyramid size, geometrical shape, and density distribution, can be finely tuned by varying the growth temperature between 300 and 400 °C, whereas higher temperatures lead to more compact systems with a three-dimensional (3D) morphology. A growth mechanism of the obtained ZnO nanostructures based on a self-catalytic vapor-solid (VS) mode is proposed, in order to explain the evolution of nanostructure morphologies as a function of the adopted process conditions. The results obtained by a thorough chemico-physical characterization enable us to get an improved control over the properties of ZnO nanopyramids grown by this technique. Taken together, they are of noticeable importance not only for fundamental research on ZnO nanomaterials with controlled nano-organization but also to tailor ZnO functionalities in view of various potential applications.

AB - High purity porous ZnO nanopyramids with controllable properties are grown on their tips on Si(100) substrates by means of a catalyst-free vapor phase deposition route in a wet oxygen reaction environment. The system degree of preferential [001] orientation, as well as nanopyramid size, geometrical shape, and density distribution, can be finely tuned by varying the growth temperature between 300 and 400 °C, whereas higher temperatures lead to more compact systems with a three-dimensional (3D) morphology. A growth mechanism of the obtained ZnO nanostructures based on a self-catalytic vapor-solid (VS) mode is proposed, in order to explain the evolution of nanostructure morphologies as a function of the adopted process conditions. The results obtained by a thorough chemico-physical characterization enable us to get an improved control over the properties of ZnO nanopyramids grown by this technique. Taken together, they are of noticeable importance not only for fundamental research on ZnO nanomaterials with controlled nano-organization but also to tailor ZnO functionalities in view of various potential applications.

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Controlled Growth of Supported ZnO Inverted Nanopyramids with Downward Pointing Tips

Abstract

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ASJC Scopus subject areas

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