The effects of changing the lattice isotopes on defects produced by silicon implantation were analyzed using photoluminescence (PL) technique. It was observed that X and W zero-phonon lines (ZPLs) shift between natSi and 30Si was +1.55(5) and +1.27(5) meV. ZPL shifts were caused by the effects of the electron-phonon coupling to the continuum of lattice modes. X centers had low vibrational modes (LVMs) of quanta 66.2, and 69.0 meV in natSi, and W center has LVMs of 70.0 meV. It was shown that the assignments of the X and W centers to the self-interstitial clusters supported the existence of above modes.
ASJC Scopus subject areas
- Physics and Astronomy(all)