Photo-EPR experiments on defects in irradiated silicon

Abstract
The defect electrical levels for eight EPR spectra (Si-A10, -A14, -A15, -A16, -G7, -G16, -P2, -P4) are determined from optical bleaching experiments via electron paramagnetic resonance. The defect energy levels are all located near the middle of the band gap in between Ec ∼ 0.40 eV and Eu + 0.40 eV.