Authors
Julie Goffard, Davy Gérard, Patrice Miska, Anne-Laure Baudrion, Régis Deturche, Jérôme Plain,
Title
Plasmonic engineering of spontaneous emission from silicon nanocrystals
In
Scientific reports
Volume
3
Pages
2672–1
Publisher
Nature Publishing Group
Year
2013
Publisher's URL
http://www.nature.com/srep/2013/130916/srep02672/full/srep02672.html
Indexed by
Abstract
Silicon nanocrystals offer huge advantages compared to other semi-conductor quantum dots as they are made from an abundant, non-toxic material and are compatible with silicon devices. Besides, among a wealth of extraordinary properties ranging from catalysis to nanomedicine, metal nanoparticles are known to increase the radiative emission rate of semiconductor quantum dots. Here, we use gold nanoparticles to accelerate the emission of silicon nanocrystals. The resulting integrated hybrid emitter is 5-fold brighter than bare silicon nanocrystals. We also propose an in-depth analysis highlighting the role of the different physical parameters in the photoluminescence enhancement phenomenon. This result has important implications for the practical use of silicon nanocrystals in optoelectronic devices, for instance for the design of efficient down-shifting devices that could be integrated within future silicon solar cells.
Affiliations
Offprint