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Size characterisation of noble-metal nano-crystals formed in sapphire by ion irradiation and subsequent thermal annealing

Mota-Santiago, Pablo Ernesto LU ; Crespo-Sosa, Alejandro ; Jiménez-Hernández, José Luis ; Silva-Pereyra, Hector Gabriel ; Reyes-Esqueda, Jorge Alejandro and Oliver, Alicia (2012) In Applied Surface Science 259. p.574-581
Abstract

Metallic nano-particles embedded in transparent dielectrics are very important for new technological applications because of their unique optical properties. These properties depend strongly on the size and shape of the nano-particles. In order to achieve the synthesis of metallic nano-particles it has been used the technique of ion implantation. This is a very common technique because it allows the control of the depth and concentration of the metallic ions inside the sample, limited mostly by straggling, without introducing other contaminant agents. The purpose of this work was to measure the size of the nano-particles grown under different conditions in Sapphire and its size evolution during the growth... (More)

Metallic nano-particles embedded in transparent dielectrics are very important for new technological applications because of their unique optical properties. These properties depend strongly on the size and shape of the nano-particles. In order to achieve the synthesis of metallic nano-particles it has been used the technique of ion implantation. This is a very common technique because it allows the control of the depth and concentration of the metallic ions inside the sample, limited mostly by straggling, without introducing other contaminant agents. The purpose of this work was to measure the size of the nano-particles grown under different conditions in Sapphire and its size evolution during the growth process. To achieve this goal, α-Al 2 O 3 single crystals were implanted with Ag or Au ions at room temperature with different fluences (from 2 × 10 16 ions/cm 2 to 8 × 10 16 ions/cm 2 ). Afterwards, the samples were annealed at different temperatures (from 600 °C to 1100 °C) in oxidising, reducing, Ar or N 2 atmospheres. We measured the ion depth profile by Rutherford Backscattering Spectroscopy (RBS) and the nano-crystals size distribution by using two methods, the surface plasmon resonance in the optical extinction spectrum and the Transmission Electron Microscopy (TEM).

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author
; ; ; ; and
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Ion implantation, Nano-composites, Nucleation, Ostwald ripening
in
Applied Surface Science
volume
259
pages
8 pages
publisher
Elsevier
external identifiers
  • scopus:84866012674
ISSN
0169-4332
DOI
10.1016/j.apsusc.2012.06.114
language
English
LU publication?
no
id
3abd2fcc-07ea-4c53-972a-890e68c1bff5
date added to LUP
2023-04-05 16:09:01
date last changed
2023-07-28 14:16:25
@article{3abd2fcc-07ea-4c53-972a-890e68c1bff5,
  abstract     = {{<p>                             Metallic nano-particles embedded in transparent dielectrics are very important for new technological applications because of their unique optical properties. These properties depend strongly on the size and shape of the nano-particles. In order to achieve the synthesis of metallic nano-particles it has been used the technique of ion implantation. This is a very common technique because it allows the control of the depth and concentration of the metallic ions inside the sample, limited mostly by straggling, without introducing other contaminant agents. The purpose of this work was to measure the size of the nano-particles grown under different conditions in Sapphire and its size evolution during the growth process. To achieve this goal, α-Al                              <sub>2</sub>                             O                             <sub>3</sub>                              single crystals were implanted with Ag or Au ions at room temperature with different fluences (from 2 × 10                             <sup>16</sup>                              ions/cm                             <sup>2</sup>                              to 8 × 10                             <sup>16</sup>                              ions/cm                             <sup>2</sup>                             ). Afterwards, the samples were annealed at different temperatures (from 600 °C to 1100 °C) in oxidising, reducing, Ar or N                             <sub>2</sub>                              atmospheres. We measured the ion depth profile by Rutherford Backscattering Spectroscopy (RBS) and the nano-crystals size distribution by using two methods, the surface plasmon resonance in the optical extinction spectrum and the Transmission Electron Microscopy (TEM).</p>}},
  author       = {{Mota-Santiago, Pablo Ernesto and Crespo-Sosa, Alejandro and Jiménez-Hernández, José Luis and Silva-Pereyra, Hector Gabriel and Reyes-Esqueda, Jorge Alejandro and Oliver, Alicia}},
  issn         = {{0169-4332}},
  keywords     = {{Ion implantation; Nano-composites; Nucleation; Ostwald ripening}},
  language     = {{eng}},
  month        = {{10}},
  pages        = {{574--581}},
  publisher    = {{Elsevier}},
  series       = {{Applied Surface Science}},
  title        = {{Size characterisation of noble-metal nano-crystals formed in sapphire by ion irradiation and subsequent thermal annealing}},
  url          = {{http://dx.doi.org/10.1016/j.apsusc.2012.06.114}},
  doi          = {{10.1016/j.apsusc.2012.06.114}},
  volume       = {{259}},
  year         = {{2012}},
}