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Porous anodic alumina on galvanically grown PtSi layer for application in template-assisted Si nanowire growth.

Michelakaki I, Nassiopoulou AG, Stavrinidou E, Breza K, Frangis N - Nanoscale Res Lett (2011)

Bottom Line: We report on the fabrication and morphology/structural characterization of a porous anodic alumina (PAA)/PtSi nano-template for use as matrix in template-assisted Si nanowire growth on a Si substrate.The PtSi layer was formed by electroless deposition from an aqueous solution containing the metal salt and HF, while the PAA membrane by anodizing an Al film deposited on the PtSi layer.The morphology and structure of the PtSi layer and of the alumina membrane on top were studied by Scanning and High Resolution Transmission Electron Microscopies (SEM, HRTEM).

View Article: PubMed Central - HTML - PubMed

Affiliation: Institute of Microelectronics, NCSR Demokritos, Terma Patriarchou Grigoriou, Aghia Paraskevi, 153 10, Athens, Greece. A.Nassiopoulou@imel.demokritos.gr.

ABSTRACT
We report on the fabrication and morphology/structural characterization of a porous anodic alumina (PAA)/PtSi nano-template for use as matrix in template-assisted Si nanowire growth on a Si substrate. The PtSi layer was formed by electroless deposition from an aqueous solution containing the metal salt and HF, while the PAA membrane by anodizing an Al film deposited on the PtSi layer. The morphology and structure of the PtSi layer and of the alumina membrane on top were studied by Scanning and High Resolution Transmission Electron Microscopies (SEM, HRTEM). Cross sectional HRTEM images combined with electron diffraction (ED) were used to characterize the different interfaces between Si, PtSi and porous anodic alumina.

No MeSH data available.


Related in: MedlinePlus

SEM images of the surface of samples S-15 min (a), S-30 min (b), and S-50 min (c). In (a), the surface is smooth and contains a small density of spherical nanoparticles on it, while in (b), we reveal that these nanoparticles started to form clusters, which increase in volume with time (see (c)).
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Figure 1: SEM images of the surface of samples S-15 min (a), S-30 min (b), and S-50 min (c). In (a), the surface is smooth and contains a small density of spherical nanoparticles on it, while in (b), we reveal that these nanoparticles started to form clusters, which increase in volume with time (see (c)).

Mentions: Figure 1 shows FE-SEM images of samples S-15 min (a), S-30 min (b) and S-50 min (c). The surface film morphology is smooth in all cases with a number of dots or clusters of dots superimposed on it. These dots/clusters were not observed in sample S-5 min (not shown in Figure 1 since its surface was totally featureless). In sample S-15 min the surface contains only a small density of spherical dots, which tend to merge progressively into clusters of dots as the immersion time increases (see samples S-30 min (Figure 1b) and S-50 min (Figure 1c)).


Porous anodic alumina on galvanically grown PtSi layer for application in template-assisted Si nanowire growth.

Michelakaki I, Nassiopoulou AG, Stavrinidou E, Breza K, Frangis N - Nanoscale Res Lett (2011)

SEM images of the surface of samples S-15 min (a), S-30 min (b), and S-50 min (c). In (a), the surface is smooth and contains a small density of spherical nanoparticles on it, while in (b), we reveal that these nanoparticles started to form clusters, which increase in volume with time (see (c)).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3211510&req=5

Figure 1: SEM images of the surface of samples S-15 min (a), S-30 min (b), and S-50 min (c). In (a), the surface is smooth and contains a small density of spherical nanoparticles on it, while in (b), we reveal that these nanoparticles started to form clusters, which increase in volume with time (see (c)).
Mentions: Figure 1 shows FE-SEM images of samples S-15 min (a), S-30 min (b) and S-50 min (c). The surface film morphology is smooth in all cases with a number of dots or clusters of dots superimposed on it. These dots/clusters were not observed in sample S-5 min (not shown in Figure 1 since its surface was totally featureless). In sample S-15 min the surface contains only a small density of spherical dots, which tend to merge progressively into clusters of dots as the immersion time increases (see samples S-30 min (Figure 1b) and S-50 min (Figure 1c)).

Bottom Line: We report on the fabrication and morphology/structural characterization of a porous anodic alumina (PAA)/PtSi nano-template for use as matrix in template-assisted Si nanowire growth on a Si substrate.The PtSi layer was formed by electroless deposition from an aqueous solution containing the metal salt and HF, while the PAA membrane by anodizing an Al film deposited on the PtSi layer.The morphology and structure of the PtSi layer and of the alumina membrane on top were studied by Scanning and High Resolution Transmission Electron Microscopies (SEM, HRTEM).

View Article: PubMed Central - HTML - PubMed

Affiliation: Institute of Microelectronics, NCSR Demokritos, Terma Patriarchou Grigoriou, Aghia Paraskevi, 153 10, Athens, Greece. A.Nassiopoulou@imel.demokritos.gr.

ABSTRACT
We report on the fabrication and morphology/structural characterization of a porous anodic alumina (PAA)/PtSi nano-template for use as matrix in template-assisted Si nanowire growth on a Si substrate. The PtSi layer was formed by electroless deposition from an aqueous solution containing the metal salt and HF, while the PAA membrane by anodizing an Al film deposited on the PtSi layer. The morphology and structure of the PtSi layer and of the alumina membrane on top were studied by Scanning and High Resolution Transmission Electron Microscopies (SEM, HRTEM). Cross sectional HRTEM images combined with electron diffraction (ED) were used to characterize the different interfaces between Si, PtSi and porous anodic alumina.

No MeSH data available.


Related in: MedlinePlus