Speaker
Mr
Pablo Mota Santiago
(Australian National University)
Description
The photoluminescence signal of Amorphous silicon oxynitrides can be tunable by controlling their stoichiometry. The change in PL is related to defect centres and phase structures changes [1]. A coupling between the surface plasmon resonace of Au nanoparticles with these PL centres would lead to develop new optoelectronic and light source devices.
To study this process we implanted 2 MeV Au ions at room temperature with a fluence of 5 X 1016 ions/cm2, following a 60 minute thermal annealing at different atmospheres and temperatures between 1000°C to 1100 °C. The different size distributions were determined via Small Angle X-ray Scattering, while the structural parameters were determined by EXAFS [2]. As a result, Au nanoparticles with an average radius between 1-8 nm were found, where the size distribution showed a strong dependence with N concentration.
[1] Huang R. et al., Bright red, orange-yellow and white switching photoluminescence from silicon oxynitrides films with fast decay dynamics, Opt. Mat. Express 4 2 205 (2014)
[2] Giulian R., et al., The influence of annealing conditions on the growth and structure of embedded Pt nanocrystals, J. Appl. Phys. 105 2 044303 (2009)
| Keywords or phrases (comma separated) | Au nanoparticles, silicon oxynitrides, ion implantation |
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Primary author
Mr
Pablo Mota Santiago
(Australian National University)
Co-authors
Dr
Felipe Kremer
(Australian National University)
Prof.
Mark Ridgway
(Australian National University)
Dr
Patrick Kluth
(Australian National University)
