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Svrcek, V, Mariotti, D, Kalia, K, Dickinson, C and Kondo, M (2011) Formation of Single-Crystal Spherical Particle Architectures by Plasma-Induced Low-Temperature Coalescence of Silicon Nanocrystals Synthesized by Laser Ablation in Water. The Journal of Physical Chemistry C, 115 (14). pp. 6235-6242. [Journal article]
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URL: http://pubs.acs.org/doi/abs/10.1021/jp111387q
DOI: 10.1021/jp111387q
Abstract
We report that the synthesis of silicon nanocrystals (SiNCs) by laser ablation in water produces unique surface characteristics and, in particular, hydroxyl-terminated surfaces, which can induce coalescence and formation of micrometer-sized single-crystal Si spherical particles under a low-temperature (550 °C) plasma process. We demonstrate that the spherical particles can be self-organized into aggregates that extend with varying gas concentrations. At the same time, SiNCs that were sufficiently apart not to coalesce have shown peculiar photoluminescence properties, which suggest an increased tunneling probability from self-trapped excitonic surface states.
| Item Type: | Journal article |
|---|---|
| Faculties and Schools: | Faculty of Computing & Engineering Faculty of Computing & Engineering > School of Engineering |
| Research Institutes and Groups: | Engineering Research Institute Engineering Research Institute > Nanotechnology & Integrated BioEngineering Centre (NIBEC) |
| ID Code: | 18209 |
| Deposited By: | Dr Davide Mariotti |
| Deposited On: | 19 Apr 2011 08:54 |
| Last Modified: | 14 Sep 2012 10:01 |
Available Versions of this Item
- Formation of Single-Crystal Spherical Particle Architectures by Plasma-Induced Low-Temperature Coalescence of Silicon Nanocrystals Synthesized by Laser Ablation in Water. (deposited 29 Mar 2011 11:55)
- Formation of Single-Crystal Spherical Particle Architectures by Plasma-Induced Low-Temperature Coalescence of Silicon Nanocrystals Synthesized by Laser Ablation in Water. (deposited 19 Apr 2011 08:54) [Currently Displayed]
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