Fig. 2
From: Lasing with Pumping Levels of Si Nanocrystals on Silicon Wafer
a TEM image of Si QDs embedded in amorphous silicon, in which the inset shows the FFT image of crystal in QDs related to crystallizing time of 15 min under electron beam irradiation. b Random bigger bulks of crystals produced after electron beam irradiation for longer time (30 min), in which the inset shows the FFT image of crystal in the bulks