Fig. 2

Deconvolution of PL spectra into Gaussian profiles for initial (a), thermally treated in hydrogen (b), γ-irradiated with the dose 2 × 10⁷ rad (c), and γ-irradiated and thermally treated in hydrogen nc-Si/SiO₂ structures (d). PL spectra were measured at the maximum excitation intensity (10¹⁹ quanta cm⁻² s⁻¹). In the inserts, the excitation power dependences of the area of corresponding Gaussians are displayed