We report experimental results in neutron-irradiated silicon containing carbon. Initially, carbon interstitial (C i) defects form and readily associate with self-interstitials in the course of irradiation leading to the production of C i(Si I) defects and upon annealing to the sequential formation of C i(Si I) n complexes. Infrared spectroscopy measurements report the detection of two localized vibrational bands at 953 and 960 cm −1 related to the C i(Si I) defect. The thermal stability and annealing kinetics of the defect are discussed. The decay out of the two bands occurs in the temperature range of 130–200 °C. They follow second-order kinetics with an activation energy of 0.93 eV. No other bands were detected to grow in the spectra upon their annealing. Density functional theory calculations were used to investigate the structure and the energetics of the C i(Si I) and the C i(Si I) 2 defects.
|Number of pages||5|
|Journal||Journal of Materials Science: Materials in Electronics|
|Early online date||30 Nov 2019|
|Publication status||Published - Jan 2020|
Bibliographical noteThe final publication is available at Springer via http://dx.doi.org/10.1007/s10854-019-02602-4
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FunderFunding Information: T. Angeletos is grateful to the A. S. Onassis Foundation for financial support though his Ph.D. scholarship (Grant No. G ZL 001-1/2015-2016).
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Electrical and Electronic Engineering
- Institute for Future Transport and Cities - Associate
- School of Mechanical, Aerospace and Automotive Engineering - Lecturer in Mechanical Engineering and Physics
Person: Teaching and Research