Journal
OPTICS LETTERS
Volume 32, Issue 13, Pages 1878-1880Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.32.001878
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The modification of the luminescence of silicon nanocrystals experiencing the effect of a photonic bandgap in a 2D photonic crystal was investigated. The time-integrated photoluminescence spectra detected in the plane of the photonic crystal revealed a dip in the light emission corresponding to the wavelength of the bandgap, whose position changes according to the geometry of the prepatterned pillar array. The calculated emission pattern for a pointlike dipole placed in such a structure suggests an inhibition of the spontaneous emission rate at certain directions as a physical reason for the observed modification of luminescence. (c) 2007 Optical Society of America.
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