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Damage accumulation in neon implanted silicon

Oliviero, E., Peripolli, S., Amaral, L., Fichtner, P. F. P., Beaufort, M. F., Barbot, J. F. and Donnelly, S. E. (2006) Damage accumulation in neon implanted silicon. Journal of Applied Physics, 100 (4). 043505. ISSN 0021-8979

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Damage accumulation in neon-implanted silicon with fluences ranging from 5×1014 to 5×1016 Ne cm−2 has been studied in detail. As-implanted and annealed samples were investigated by Rutherford backscattering spectrometry under channeling conditions and by transmission electron microscopy in order to quantify and characterize the lattice damage. Wavelength dispersive spectrometry was used to obtain the relative neon content stored in the matrix. Implantation at room temperature leads to the amorphization of the silicon while a high density of nanosized bubbles is observed all along the ion distribution, forming a uniform and continuous layer for implantation temperatures higher than 250 °C. Clusters of interstitial defects are also present in the deeper part of the layer corresponding to the end of range of ions. After annealing, the samples implanted at temperatures below 250 °C present a polycrystalline structure with blisters at the surface while in the other samples coarsening of bubbles occurs and nanocavities are formed together with extended defects identified as {311} defects. The results are discussed in comparison to the case of helium-implanted silicon and in the light of radiation-enhanced diffusion.

Item Type: Article
Subjects: Q Science > QC Physics
Schools: School of Computing and Engineering > Electron Microscopy and Materials Analysis
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Depositing User: Graeme Greaves
Date Deposited: 02 Oct 2013 09:40
Last Modified: 28 Aug 2021 11:32


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