Fig. 4
From: Lasing with Pumping Levels of Si Nanocrystals on Silicon Wafer
a TEM image of the Si QD structures prepared in nitrogen environment of 0.1 Pa. b PL spectrum on the Si-NCs doped with nitrogen, whose bonds structures and density of states in simulation are shown in the inset. c PL spectra measured on the Si QD structures doped with nitrogen after furnace annealing in different annealing time