Abstract
Local mode spectroscopy and ab initio modelling are used to investigate two trigonal defects found in carbon-rich Si into which H had been in-diffused. Isotopic shifts with D and 13C are reported along with the effect of uniaxial stress. Ab initio modelling studies suggest that the two defects are two forms of the CH2* complex where one of the two hydrogen atoms lies at an anti-bonding site attached to C or Si, respectively. The two structures are nearly degenerate and possess vibrational modes in good agreement with those observed.
Original language | English |
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Pages (from-to) | 197-201 |
Number of pages | 5 |
Journal | Physica B: Condensed Matter |
Volume | 308-310 |
DOIs | |
Publication status | Published - Dec 2001 |
Keywords
- silicon
- hydrogen
- carbon
- impurity complexes
- absorption bands
- nanoscience