Emission Mechanisms of Si Nanocrystals and Defects in SiO₂ Materials

Figure 11

(Figure 4 from [38]). Theoretical results for the free exciton band gap energy (upper line) and for the lowest transition energy in the presence of a Si=O bond (lowest line) as a function of crystallite diameter. The experimental room temperature peak PL energies for both the oxidized (○) and the nonoxidized or hydrogen passivated (●) samples are also depicted.