Photoluminescence of porous silicon

Abstract

The photoluminescence of mesoporous silicon and silicon nanocrystals has received enormous study over the last 25 years. The spectroscopic nature and efficiency of various emission bands from the near-infrared to the ultraviolet are briefly reviewed, as are mechanistic studies on individual nanocrystals. Improvements in surface passivation and size control of silicon nanocrystals have led to impressive photoluminescence quantum efficiencies in the visible range.