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 | |
| Publication status | Published - 4 Apr 2018 |
| MoE publication type | A1 Journal article-refereed |
Fingerprint
Cite this
}
Controlled Growth of Supported ZnO Inverted Nanopyramids with Downward Pointing Tips. / Barreca, Davide; Carraro, Giorgio; Maccato, Chiara; Altantzis, Thomas; Kaunisto, Kimmo; Gasparotto, Alberto.
In: Crystal Growth and Design, Vol. 18, No. 4, 04.04.2018, p. 2579-2587.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
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 - 2018/4/4
Y1 - 2018/4/4
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.
UR - http://www.scopus.com/inward/record.url?scp=85044992194&partnerID=8YFLogxK
U2 - 10.1021/acs.cgd.8b00198
DO - 10.1021/acs.cgd.8b00198
M3 - Article
AN - SCOPUS:85044992194
VL - 18
SP - 2579
EP - 2587
JO - Crystal Growth and Design
JF - Crystal Growth and Design
SN - 1528-7483
IS - 4
ER -