Chapter

Silicon nanophotonics

Ivan Pelant and Jan Valenta

in Luminescence Spectroscopy of Semiconductors

Published in print February 2012 | ISBN: 9780199588336
Published online May 2012 | e-ISBN: 9780191738548 | DOI: http://dx.doi.org/10.1093/acprof:oso/9780199588336.003.0015
Silicon nanophotonics

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Silicon nanophotonics deals with unique luminescence properties of silicon nanocrystals sized approximately from one to several nanometers. These nanocrystals have the potential to become active medium in future light-emitting devices or even in a silicon laser. First, spontaneous photoluminescence in porous silicon and silicon nanocrystals is described and some preparative methods of these nanostructures are briefly mentioned. Then recent experimental data about search for optical gain in Si nanocrystals are critically considered. Peculiar luminescence behaviour of active planar waveguides made of Si nanocrystals is demonstrated. Selected ways of how to achieve electroluminescence in Si nanocrystals embedded in an insulating matrix are shown. Attractive combination of Si nanocrystals with Er3+ ions for lasing in the near infrared region is pointed out. Finally, possible biological applications of luminescent Si nanocrystals are briefly outlined.

Keywords: porous silicon; silicon nanocrystals; spontaneous photoluminescence; optical gain; active planar waveguides; electroluminescence; Si nanocrystals& Er3+ ions; biological applications

Chapter.  7771 words.  Illustrated.

Subjects: Atomic, Molecular, and Optical Physics

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